Wonthaggi

Suburb (SAL)

Rest of Vic. / Gippsland - South West

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Data Sources ABSValuer GeneralRental BoardACARA Newest Oct 2026 · Refreshed ABS QuickStats SAL22829 How we calculate this
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Suburb (SAL) Boundary Analysis

This analysis uses Suburbs and Localities (SAL) boundaries, which can materially differ from Statistical Areas (SA2) even when sharing the same name.

SAL boundaries are defined by Australia Post and the Australian Bureau of Statistics to represent commonly-known suburb names used in postal addresses.

Statistical Areas (SA2) are designed for census data collection and may combine multiple suburbs or use different geographic boundaries. For comprehensive analysis, consider reviewing both boundary types if available.

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Sales ActivityProperty Sales Trends in Wonthaggi

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DemographicsPopulation Growth in Wonthaggi

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Wonthaggi has an estimated 6,191 residents, up from 5,215 at the 2021 Census — a change of 976 people, or 18.7%. Growth has averaged 3.6% a year over five years, faster than 89% of areas nationally. 328 new addresses have been validated here since Census night. Interstate and internal migration accounts for 88.0% of that increase. That puts 116 residents on each square kilometre. Population is estimated from ABS Estimated Resident Population releases and GNAF address data, re-based from the 2021 Census and updated annually.

Detail

Demographic assessments by AreaSearch, drawing upon wider ABS population releases alongside validated new addresses post-Census, indicate that the suburb of Wonthaggi has an estimated population of approximately 6,191 as of Aug 2026. This represents an addition of 976 people (18.7%) compared to the 5,215 people enumerated in the 2021 Census. Such expansion is based on an ERP of 6,128 calculated following the June 2025 ABS release, coupled with 328 validated new addresses registered after the Census date. The resulting population density stands at 115 persons per square kilometer, highlighting ample physical space and scope for future expansion.

Outpacing both Rest of Vic. (4.4%) and the surrounding SA4 region, the suburb of Wonthaggi achieved 18.7% growth since the 2021 Census, positioning it at the forefront of regional expansion. Interstate migration served as the primary growth catalyst, generating roughly 88.0% of recent population gains. Projections for each SA2 district rely on ABS/Geoscience Australia figures published in 2024 with a 2022 baseline, supplemented where necessary by 2023 VIC State Government Regional/LGA forecasts adapted through a weighted aggregation methodology. Age-cohort growth trends derived from these figures are similarly projected forward from 2032 to 2041 across all districts. Looking ahead, long-term demographic modelling places the suburb of Wonthaggi in the top 10 percent of regional Australia for growth, with expectations of adding 2,731 persons by 2041 via aggregated SA2 projections—an overall rise of 43.1% across the 16 years.

Frequently Asked Questions - Population

What is the latest population estimate for the suburb of Wonthaggi?
Total population for the suburb of Wonthaggi was estimated to be approximately 6,191 as at Aug 26. This is based upon an estimated resident population of 6,128 from the ABS up to June 2025.
How has the population in the suburb of Wonthaggi changed since 2021?
The suburb of wonthaggi has added approximately 976 people and shown a 18.72% increase from the 5,215 people recorded at the 2021 Census period.
What is the population density in the suburb of Wonthaggi?
The population density in the suburb of Wonthaggi is estimated at 115 persons per square kilometer based on the latest population estimate.
How much has the population grown over the past 10 years in the suburb of Wonthaggi?
Over the past 10 years, the population in the suburb of Wonthaggi has shown a compound annual growth rate of 2.2% per annum.
What are the main drivers of population growth in the suburb of Wonthaggi?
Population growth in the suburb of Wonthaggi is driven by: Interstate migration (88.0%), Overseas migration (12.0%), Natural increase (0.0%). The primary driver is Interstate migration, contributing 88.0% of overall population gains.

Residential SupplyHousing Development & Building Approvals in Wonthaggi

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625 new dwellings have been approved in Wonthaggi over the past five years, an average of 125 a year. That places the area in the 87th percentile for residential development activity nationally, about 20 approvals per 1,000 residents a year. Of the 99 dwellings approved in the latest reporting year, 95% were detached houses and the rest townhouses or apartments. Approvals are currently running at an annualised 91, well below that longer-run average. Figures come from ABS building approvals aggregated to this Suburb (SAL) boundary and are updated monthly as the ABS releases them.

Detail

According to building approval statistics from the ABS compiled by AreaSearch, residential building approvals in Wonthaggi average roughly 125 properties annually. Across the preceding 5 financial years (between FY-21 and FY-25), approximately 625 homes received approval, with 91 granted during FY-25 to date. An influx of 1.9 new residents per approved dwelling annually over the 5 financial years (between FY-21 and FY-25) indicates balanced supply and demand dynamics, underpinning market stability. Furthermore, construction value for new dwellings averages $511,000, marginally exceeding regional benchmarks to reflect quality residential construction. Local commercial investment remains buoyant, evidenced by $31.1 million in commercial approvals during this financial year.

Per capita development volume in Wonthaggi surpasses Rest of Vic. by 85.0%, providing purchasers with extensive options. This high level of activity greatly exceeds national norms and demonstrates substantial developer commitment. Construction is heavily weighted toward detached houses at 95.0%, while medium and high-density housing accounts for 5.0%, maintaining a low-density urban fabric tailored to buyers seeking spacious living. An average of approximately 69 people per dwelling approval further underlines its profile as an expanding area. Based on the most recent AreaSearch quarterly release, Wonthaggi is anticipated to expand by 2,668 residents leading up to 2041. Ongoing building volumes appear well-positioned to satisfy future residential requirements, supporting advantageous market conditions for purchasers and potentially facilitating expansion above current estimates.

Frequently Asked Questions - Development

How many dwelling approvals have occurred in the suburb of Wonthaggi recently?
Dwelling approval activity in the the suburb of Wonthaggi area has seen 213 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The suburb of Wonthaggi's current population of 6,191 has been supported by 125 approvals on average over recent years.
How does the suburb of Wonthaggi's development activity compare to the broader region?
The suburb of Wonthaggi has seen 1.75 approvals per 100 people in recent years, compared to 0.75 approvals in the broader region. This means that one dwelling has been approved for every 68 people in the suburb of Wonthaggi, compared to one for every 145 in the broader region.
Is the suburb of Wonthaggi keeping up with housing demand?
With the population expected to increase by 2,668 people by 2041, around 1,334 new dwellings will be necessary. Recent approval levels appear more than sufficient to meet these forecasts, considering the census average of 2.0 persons per dwelling. This suggests that population growth may exceed trend projections in the coming years, supported by a robust housing supply.
What has been the trend in development approvals over the past five years in the suburb of Wonthaggi?
Looking at development activity over the past five years, the suburb of Wonthaggi's approval levels have been below the yearly average of 125, indicating a recent decline in approval activity.
How many dwellings will be needed to accommodate future population growth in the suburb of Wonthaggi?
The population in the suburb of Wonthaggi is expected to grow by 2,668 people by 2041, necessitating approximately 1,334 new dwellings. This calculation is based on the current census average of 2.0 persons per dwelling in the area.
How does recent development compare to population growth in the suburb of Wonthaggi?
Over the past five years, the population in the suburb of Wonthaggi has grown by approximately 1,891 people, while 625 residential approvals were recorded. This equates to a ratio of 3.0 people added for each new dwelling approval. This high ratio suggests strong population growth relative to housing supply, potentially indicating unmet housing demand.
Are there opportunities for residential developers in the suburb of Wonthaggi?
With dwelling approval activity running at an average of 125 approvals per year and a population of 6,191, the market appears to be adequately supplied relative to projected housing demand in recent years, suggesting that developers should have a longer-term approach when considering new projects. With the population expected to increase by 2,668 people by 2041, around 1,334 new dwellings will be necessary. Recent approval levels appear more than sufficient to meet these forecasts, considering the census average of 2.0 persons per dwelling. This suggests that population growth may exceed trend projections in the coming years, supported by a robust housing supply.
Approvals Pipeline Development applications near Wonthaggi

Development applications around Wonthaggi

Development approvals is a new addition to AreaSearch. We’re actively expanding council coverage and refining the dataset — details and statuses for some councils may be partial. Check back regularly for the latest pipeline.
Application search is not available in Victoria. AreaSearch holds 1 application for Wonthaggi, but they are a record of past activity rather than a current register. Victoria has no state-wide planning portal and its council coverage is uneven, so we have switched the search off here rather than return partial answers. We are currently investigating a solution. No credits are charged for Victorian applications, and building approvals from the ABS and the major projects we track are unaffected.

SOURCE: Planning portals and council registers, compiled by AreaSearch. Distance & bearing measured from the suburb midpoint.

Project PipelineInfrastructure & Major Projects in Wonthaggi

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AreaSearch tracks 17 current infrastructure and development projects inside Wonthaggi, worth an estimated $641 million. A further 40 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $6.95 billion. 21 are already under construction and 13 are due for completion within three years. The pipeline spans residential development, communities, precincts & urban renewal and sports & recreation. Records are compiled from Infrastructure Australia, state agencies, council planning portals and public announcements, reviewed and updated daily, then ranked by proximity, construction stage, completion horizon and project scale.

Detail

Infrastructure upgrades, major developments, and strategic planning initiatives play a decisive role in shaping local area performance. AreaSearch has pinpointed 19 key projects anticipated to influence the region, highlighted by the Wonthaggi Hospital Stage 2 Redevelopment, Summerfields Estate, Bass Coast Health Staff Accommodation Facility, and the Wonthaggi North East Precinct Structure Plan, with leading initiatives detailed below.

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Frequently Asked Questions - Infrastructure

What are some of the major infrastructure and planning changes likely to influence the suburb of Wonthaggi?
Key infrastructure and planning changes likely to influence the suburb of Wonthaggi include: Wonthaggi Hospital Stage 2 Redevelopment (Planning); Summerfields Estate (Construction); Bass Coast Health Staff Accommodation Facility (Construction); Wonthaggi North East Precinct Structure Plan (Approved); and Powlett Ridge Estate (Construction). These projects represent significant developments that will shape the area's future infrastructure landscape.
What types of infrastructure projects are impacting the suburb of Wonthaggi?
Infrastructure development impacting the suburb of Wonthaggi spans multiple sectors including Residential Development, Health & Medical, and Communities, Precincts & Urban Renewal, among others.
What is the scale of infrastructure investment impacting the suburb of Wonthaggi?
Infrastructure investment analysis indicates substantial capital deployment exceeding $2.9 billion in projects that will impact the extended area, with a notable concentration of investment within the immediate the suburb of Wonthaggi vicinity.
How does the suburb of Wonthaggi's infrastructure development compare to other areas?
With an infrastructure score in the top 40%, the suburb of Wonthaggi demonstrates above-average development activity compared to national benchmarks.
Bass Coast Health Staff Accommodation Facility
Category: Health & Medical
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   

Construction of a $13 million two-storey healthcare worker accommodation facility on the Wonthaggi Hospital grounds adjacent to Kirrak House. The project delivers 20 self-contained studio and apartment units with communal indoor and outdoor spaces to house visiting specialists, nurses, doctors, and allied health professionals.

Health & Medical

Inverloch to Wonthaggi Trail
Category: Sports & Recreation
Stage: Construction | Est. Comp: 2026
Source / Links: Link 1   Link 2  

Construction of a 14 km off-road shared walking and cycling trail linking Inverloch and Wonthaggi. Much of the route is complete and open, with remaining works focused on gravel path completion, boardwalks, signage, planting and finishing works. The trail starts near Inverloch Surf Life Saving Club, follows public road reserve and drainage reserve corridors including Goroke Street and Drowleys Road, and connects to the Bass Coast Rail Trail in Wonthaggi. Council expects completion in mid 2026.

Sports & Recreation

Wonthaggi Hospital Stage 2 and 3 Redevelopment
Category: Health
Stage: Planning | Est. Comp: 0
Source / Links: Link 1   Link 2  

Stages 2 and 3 of the Wonthaggi Hospital redevelopment, backed by a $290 million Victorian Government election commitment made in September 2022. The full program will deliver two new inpatient wards adding up to 64 beds, a new labour and delivery complex, a new outpatient clinic with around 25 treatment spaces (including dialysis and chemotherapy), improved radiology, allied health facilities, and additional car parking. The Victorian Health Building Authority (VHBA) is progressing the master plan, feasibility study and business case.In April 2026 the government committed $65 million for interim early works including a new pharmacy, pathology clinic and medical imaging suite. No construction start date for the main Stage 2 works has been confirmed. The hospital is now part of the Bayside Health Regional Care Group following a merger on 1 January 2026. Stage 1 ($115 million) was completed in late 2022.

Health

Powlett Ridge Estate
Category: Residential Development
Stage: Construction | Est. Comp: 0
Source / Links: Link 1   

Powlett Ridge Estate is a multi-stage residential land development in North Wonthaggi delivered by LandGipps, positioned where the countryside meets the coast. The estate offers lots ranging from around 200 to 2000 square metres, underground services, tree-lined streets and an open space reserve, with views toward the Powlett River flats. Multiple early stages are complete and occupied, with later stages including Stage 5, Stage 6a, Stage 7 and Stage 9 released or currently selling. The site is about 3 kilometres from the Wonthaggi town centre and close to schools, the Wonthaggi Recreation Reserve, and the coastal attractions of Cape Paterson and Inverloch, both around 10 minutes away.

Residential Development

Summerfields Estate
Category: Communities, Precincts & Urban Renewal
Stage: Construction | Est. Comp: 2027

Masterplanned residential community in Wonthaggi being delivered in multiple stages. The estate includes approximately 450 residential lots together with landscaped open space, wetlands, walking trails and community areas. Construction and staged land releases have continued with further subdivision activity recorded.

Communities, Precincts & Urban Renewal

North Wonthaggi Affordable Housing Development
Category: Residential Development
Stage: Approved | Est. Comp: 0
Source / Links: Link 1   Link 2  

Development of nine single-storey affordable dwellings on unused road reserve in George Street to provide housing for low-income households, featuring accessibility provisions and funded through Victoria's Big Housing Build.

Residential Development

Wonthaggi Closed Landfill Final Capping
Category: Environmental & Disaster Management
Stage: Construction | Est. Comp: 0
Source / Links: Link 1   

Environmental rehabilitation of former landfill site with engineered capping system, gas management, revegetation and ongoing monitoring. Ensures long-term environmental protection and potential future recreational use.

Environmental & Disaster Management

Victorian Desalination Plant Expansion
Category: Utilities
Stage: Pre-Approval | Est. Comp: N/A

The Victorian Desalination Plant Expansion represents the planned capacity augmentation of Victoria's reverse osmosis desalination plant at Wonthaggi. The existing facility delivers up to 150 billion litres of potable water annually under a Public-Private Partnership with AquaSure. Built-in civil allowances and marine tunnel provisions enable production to scale up to 200 billion litres per year when triggered by state water policy.

Utilities

Jobs & IndustryEmployment Trends in Wonthaggi

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2,397 residents of Wonthaggi are employed, from a labour force of 2,501. Unemployment sits at 4.2%, with participation at 46.3%. Weighted for its industry mix, the area's sectors are forecast to grow about 6.6% nationally over five years. That reflects industry composition only and makes no allowance for local population growth, so in an area growing as fast as this one it understates the likely rise in local jobs. The working-day population is estimated at 5,322, about 86% of the resident population, so more people leave the area for work than travel in. Unemployment and labour force come from ABS Small Area Labour Markets, updated quarterly; the industry and occupation profile is from the 2021 Census.

Detail

Wonthaggi maintains an evenly distributed workforce across white and blue-collar occupations, supported by strong representation across essential services, an unemployment rate of 4.2%, and annual job growth estimated at 5.2% via AreaSearch statistical area datasets. As of March 2026, employed residents total 2,397. The local unemployment rate sits 0.5% higher than the 3.7% recorded across Regional Vic., while local labor force participation of 46.3% falls well behind the 61.1% seen across Regional Vic.. Remote work uptake was modest, with 11.5% of residents working from home at the Census, a figure subject to prevailing Covid-19 restrictions.

Local employment is largely clustered in construction, retail trade, and health care & social assistance. The community displays a marked concentration in retail trade, where its employment proportion stands at 1.6 times the wider region. Conversely, agriculture, forestry & fishing accounts for only 3.1% of working locals, trailing the 7.5% figure for Regional Vic.. A comparison between resident workers and local jobs recorded at the Census points to constrained employment opportunities within the immediate locality. SALM and ABS datasets compiled by AreaSearch reveal that over the 12-month period, a 5.2% increase in employment alongside a 4.4% expansion in the labor force drove a 0.7 percentage point decline in the unemployment rate. In Regional Vic., by contrast, jobs contracted by 0.1%, the workforce shrank by 0.3%, and the unemployment rate decreased by 0.2 percentage points. Future labor demand insights from Jobs and Skills Australia as of Mar-26 project nationwide employment gains of 6.6% across five years and 13.7% across ten years, with sector-specific trends varying. Correlating these national projections with Wonthaggi's occupational distribution suggests local employment growth of 6.6% over five years and 13.6% over ten years (note that this represents an illustrative weighted extrapolation excluding localized demographic projections).

Frequently Asked Questions - Employment

What is the employment situation in the suburb of Wonthaggi?
As of March 2026, the suburb of Wonthaggi has approximately 2,397 employed residents with an unemployment rate of 4.2%. This healthy unemployment rate suggests a well-functioning labour market. Employment indicators are below the national average, suggesting room for improvement.
How does the suburb of Wonthaggi's unemployment rate compare to the broader region?
As of March 2026, the unemployment rate in the suburb of Wonthaggi stands at 4.2%, which is broadly in line with Regional Vic.'s rate of 3.7%. For comparison, the national unemployment rate is 4.2%.
What are the major employment sectors in the suburb of Wonthaggi?
The employment landscape in the suburb of Wonthaggi is dominated by several key sectors. The largest employers are health care & social assistance (20.0% of employment), retail trade (15.7%), and construction (12.9%). Other significant employers include accommodation & food and education & training.
How has employment changed recently in the suburb of Wonthaggi?
Over the past year to March 2026, the suburb of Wonthaggi has experienced employment growth, with total employment increasing while the labour force increased. As a result, the unemployment rate has fall. By comparison, Regional Vic. saw employment decreased and its unemployment rate dropped.
What is the workforce participation rate in the suburb of Wonthaggi?
The workforce participation rate in the suburb of Wonthaggi is 46.3%, which represents the proportion of working-age residents who are either employed or actively seeking work. The relatively low participation rate may indicate limited job opportunities or demographic factors affecting workforce engagement. The local rate trailing the Regional Vic. average of 61.1%, suggesting potential for increased workforce participation.
Which industries are over-represented in the suburb of Wonthaggi's employment market?
The suburb of wonthaggi shows notable specialization in retail trade, which employs 15.7% of the local workforce compared to 9.9% regionally. This concentration suggests the area has developed competitive advantages in this sector. The area also shows above-average employment in 2 other sectors, contributing to a distinctive economic profile.
What are the employment growth prospects for the suburb of Wonthaggi?
Based on Jobs and Skills Australia projections applied to the suburb of Wonthaggi's industry mix, employment is expected to grow by 6.6% over the next five years and 13.6% over ten years. This compares to national growth expectations of 6.6% over five years. Steady growth is anticipated across multiple sectors, providing diverse employment opportunities.
How does the job market in the suburb of Wonthaggi compare nationally?
The suburb of wonthaggi's employment market shows below-average performance in national comparisons. While employment opportunities exist, the area faces more challenges than many other regions. Recent job advertisement trends show the broader employment region saw a 1.9% decline, ranking 22.0nd out of 37 regions nationally.
What employment opportunities exist for skilled workers in the suburb of Wonthaggi?
Skilled workers will find good opportunities in the suburb of Wonthaggi, with skilled sectors accounting for 32.6% of employment. Key sectors for skilled workers include health care & social assistance (20.0%), education & training (7.0%), and professional & technical (3.3%). With projected employment growth of 6.6% over five years, demand for skilled workers is expected to remain strong.

EarningsHousehold Income in Wonthaggi

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Median household income in Wonthaggi is $852 a week (about $44,000 a year), with median personal income at $515 a week. ATO records put median taxable income at $36,271 a year against an average of $46,561. Household income is from the 2021 Census; taxable income is from ATO Taxation Statistics for the latest financial year available, indexed forward using the ABS Wage Price Index.

Detail

Aggregated ATO postcode data for financial year 2023 indicates that the median taxpayer income in the suburb of Wonthaggi was $36,271, with an average of $46,561. These earnings sit below national benchmarks and compare against a median of $50,954 and an average of $62,728 in Regional Vic.. Factoring in 9.62% Wage Price Index growth since financial year 2023, updated estimates as of March 2026 reach approximately $39,760 for median income and $51,040 for average income. The 2021 Census placed personal, family, and household incomes in Wonthaggi within the bottom 0th to 4th percentiles across Australia.

A significant 37.4% of the population (2,315 individuals) earns between $400 - 799, whereas the wider region is led by the $1,500 - 2,999 bracket at 30.3%. Weekly household earnings fall below $800 for 47.8% of households, highlighting widespread financial constraints. Housing cost burdens are pronounced, with residual income at 83.2%, placing the locality in the 3rd percentile nationwide.

Frequently Asked Questions - Income

What is the median taxable income in the suburb of Wonthaggi?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of Wonthaggi is approximately $39,760. The official ATO data from FY-23 recorded a median of $36,271.
What is the average taxable income in the suburb of Wonthaggi?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of Wonthaggi is approximately $51,040. The official ATO data from FY-23 recorded an average of $46,561.
How does the median taxable income in the suburb of Wonthaggi compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated median taxable income in the suburb of Wonthaggi is approximately $39,760 compared to $55,856 in Regional Vic.. The official ATO data from FY-23 shows $36,271 and $50,954 respectively.
How does the average taxable income in the suburb of Wonthaggi compare to the region?
Based on Wage Price Index adjustments to March 2026, the estimated average taxable income in the suburb of Wonthaggi is approximately $51,040 compared to $68,762 in Regional Vic.. The official ATO data from FY-23 shows $46,561 and $62,728 respectively.
What are the main income cohorts in the suburb of Wonthaggi according to the 2021 Census?
As per the 2021 Census, the income bracket containing the largest proportion (~37.4% / 2,315 persons) of the suburb of Wonthaggi's population is the $400 - 799 cohort.
How do the main income cohorts in the suburb of Wonthaggi compare to the region?
The largest income cohort in the suburb of Wonthaggi is the $400 - 799 group, representing about 37.4% of the population. In comparison, Regional Vic.'s largest income cohort is the $1,500 - 2,999 group, representing 30.3% of its population, according to the 2021 Census.
What is the median household income in the suburb of Wonthaggi according to the 2021 Census?
The 2021 Census data indicates that the median household income in the suburb of Wonthaggi is $852/wk.
What is the median family income in the suburb of Wonthaggi according to the 2021 Census?
According to the 2021 Census, the median family income in the suburb of Wonthaggi is $1,240/wk.
What is the median personal income in the suburb of Wonthaggi according to the 2021 Census?
The 2021 Census shows that the median personal income in the suburb of Wonthaggi is $515/wk.
How does the suburb of Wonthaggi's income rank nationally?
AreaSearch's latest postcode level ATO data for FY-23 reveals that income in the suburb of Wonthaggi is lower than average on a national basis, with the median assessed at $36,271 while the average income stands at $46,561. This contrasts to Regional Vic.'s figures of a median income of $50,954 and an average income of $62,728. Based on Wage Price Index growth of 9.62% since FY-23, current estimates would be approximately $39,760 (median) and $51,040 (average) as of March 2026.
What is the disposable income in the suburb of Wonthaggi?
The estimated disposable income in the suburb of Wonthaggi is $3,070 per year according to AreaSearch analysis.
How does the suburb of Wonthaggi's disposable income compare to the region?
The suburb of wonthaggi's disposable income is $3,070 compared to $5,209 for Regional Vic., based on AreaSearch analysis.

Housing StockHousing & Dwellings in Wonthaggi

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Wonthaggi had 2,361 occupied dwellings at the 2021 Census, 86% detached houses and 1% apartments. 22% are owned with a mortgage, 30% rented and 47% owned outright. At that Census the median rent was $270 a week and the median mortgage repayment $1,198 a month. Rent absorbs 31.7% of household income here and mortgage repayments 32.4%. Dwelling stock, tenure and housing costs are 2021 Census measures — the only source that counts dwellings at this boundary size.

Detail

Census data reveals that separate houses constitute 85.9% of Wonthaggi's residential stock, while semi-detached homes, apartments, and other dwellings account for 14.1%, relative to 90.1% houses and 9.9% other dwellings throughout Regional Vic.. Outright home ownership reached 47.4%, comfortably exceeding regional figures, with mortgaged properties comprising 22.2% and rental properties making up 30.4%. Typical monthly mortgage commitments stood at $1,198 and median weekly rent was $270, both notably lower than the Regional Vic. medians of $1,430 and $285. In a national context, local mortgage repayments fall well beneath the Australian benchmark of $1,863, and weekly rents remain well below the $375 national average.

Frequently Asked Questions - Housing

What percentage of homes are owned vs rented in the suburb of Wonthaggi?
In the suburb of Wonthaggi, 47.4% of homes are owned outright, 22.2% are owned with a mortgage, and 30.4% are rented.
What percentage of dwellings in the suburb of Wonthaggi are houses?
According to the latest data, 85.9% of dwellings in the suburb of Wonthaggi are houses.
What percentage of dwellings in the suburb of Wonthaggi are apartments or units?
In the suburb of Wonthaggi, 0.7% of dwellings are apartments or units, with an additional 8.8% being semi-detached dwellings.
What is the level of outright home ownership in the suburb of Wonthaggi?
Outright home ownership in the suburb of Wonthaggi stands at 47.4%, compared to 40.9% in Regional Vic..
What is the median monthly mortgage repayment in the suburb of Wonthaggi?
The median monthly mortgage repayment in the suburb of Wonthaggi is $1,198, compared to $1,430 in Regional Vic..
What is the median weekly rent in the suburb of Wonthaggi?
The median weekly rent in the suburb of Wonthaggi is $270, compared to $285 in Regional Vic..
What is the distribution of rental prices in the suburb of Wonthaggi?
In the suburb of Wonthaggi, 13.5% of rentals are $0-149/week, 71.3% are $150-349/week, 15.2% are $350-649/week, 0.0% are $650-949/week, and 0.0% are $950+/week.
What is the average monthly housing cost in the suburb of Wonthaggi?
The aggregate monthly housing cost in the suburb of Wonthaggi is $621, which represents the average monthly cost across all housing types.
What percentage of income do residents spend on housing in the suburb of Wonthaggi?
In the suburb of Wonthaggi, households with mortgages typically spend 32.4% of their income on mortgage repayments, while renters spend 31.7% of their income on rent.
How crowded are homes in the suburb of Wonthaggi?
The average persons per bedroom ratio in the suburb of Wonthaggi is 0.7, indicating the level of household density.
How does housing affordability in the suburb of Wonthaggi compare to the region?
Housing affordability in the suburb of Wonthaggi shows mortgage holders spending 32.4% of income on repayments (vs 23.8% regionally), while renters spend 31.7% of income on rent (vs 20.6% regionally).
What types of dwellings are most common in the suburb of Wonthaggi?
The dwelling mix in the suburb of Wonthaggi consists of 85.9% detached houses, 8.8% semi-detached dwellings, 0.7% apartments, and 4.6% other dwelling types.
What is the weighted average housing cost based on tenure mix in the suburb of Wonthaggi?
Based on the area's tenure composition, the weighted average monthly housing cost is approximately $621. This accounts for outright owners paying no housing costs, mortgage holders paying $1,198/month, and renters paying $1,169/month.
How affordable is housing in the suburb of Wonthaggi relative to local incomes?
Housing in Wonthaggi consumes approximately 16.8% of median household income ($3,689 monthly), indicating costs are highly affordable. The generally accepted benchmark is that housing should not exceed 30% of household income.
How do proposed developments compare to existing housing types in the suburb of Wonthaggi?
Recent development applications in Wonthaggi show attached dwellings contributing 9% of approvals compared to 14% of existing stock, while detached houses represent 91% of applications versus 86% of current dwellings. This suggests development patterns consistent with existing housing mix. The area shows minimal growth in housing density compared to other Australian locations.

HouseholdsHousehold Composition in Wonthaggi

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Wonthaggi counted 2,361 households at the 2021 Census, an estimated 2,803 today, averaging 2.0 people each. 15% are couples with children, fewer than in 94% of areas nationally, against 27% couples without children. 42% of households are people living alone, and families average 2.0 children. Household and family composition is measured only by the Census, so these are 2021 figures.

Detail

Family units constitute 55.5% of all local households, divided between couples without children (27.3%), couples with children (15.1%), and single parent families (12.4%). Non-family living arrangements make up the remaining 44.5%, dominated by single-person households at 41.8% and group households at 2.7%. Average household size stands at 2.0 people, smaller than the 2.4 recorded across Regional Vic..

Frequently Asked Questions - Households

How many households are in the suburb of Wonthaggi?
As of the 2021 Census, the suburb of Wonthaggi had 2,361 households. Based on population growth patterns, this has grown by approximately 18.7% to an estimated 2,803 households today.
What is the typical household size?
The median household size in the suburb of Wonthaggi is 2.0 people. This compares to 2.4 in Regional Vic. and reflects the area's household composition mix.
What types of households are most common?
Family households dominate at 55.5% of all households. The remaining households consist of lone person households (41.8%), group households (2.7%), and other household types (0.0%).
How are families structured in the area?
Among the 1,310 family households, 15.1% are couples with children, 27.3% are couples without children at home, and 12.4% are single parent families. This mix shapes local demand for schools, family services, and housing types.
How does the suburb of Wonthaggi compare to regional household patterns?
Compared to Regional Vic., the suburb of Wonthaggi shows distinct household patterns. Lone person households are notably over-represented at 41.8% (versus 29.3% regionally). Conversely, family households are under-represented at 55.5% compared to the regional 67.8%. This higher proportion of single-person households drives demand for smaller dwellings and different community services.
What is the average family size?
Families in the suburb of Wonthaggi have an average of 2.0 children, slightly above the Regional Vic. average of 1.8. This influences local demand for child-related services and larger family homes.
What are the marriage patterns in the suburb of Wonthaggi?
Marriage patterns reveal 39.7% of the adult population are currently married, while 31.6% have never married. This compares to 46.3% married and 34.0% never married across Regional Vic..
How significant are single-person households?
Single-person households represent 41.8% of all households in the suburb of Wonthaggi, higher than the regional average of 29.3%. This affects demand for smaller dwellings and single-person accommodation.
Are shared living arrangements common?
Group households (unrelated people sharing) account for 2.7% of households, well below the Regional Vic. average of 2.9%. This low rate suggests limited student or young professional shared accommodation.
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EducationSchools & Education in Wonthaggi

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15.1% of adults in Wonthaggi hold a university qualification, including 10.4% with a bachelor degree and 2.3% with postgraduate qualifications, lower than 75% of areas nationally. A further 28.1% hold a vocational qualification. 8 schools serve the area, with 2,547 enrolment places and an average ICSEA of 976 against a national benchmark of 1,000. Qualifications come from the 2021 Census; school enrolments, ICSEA and results come from ACARA's current release.

Detail

Educational attainment in the locality reflects distinct characteristics, with university-level qualifications held by 15.1% of residents compared to the VIC benchmark of 33.4%, signaling scope for future tertiary initiatives. Bachelor degrees comprise 10.4%, followed by graduate diplomas at 2.4% and postgraduate degrees at 2.3%. Vocational and technical training is widely held, with 38.1% of residents aged 15+ holding trade credentials, consisting of advanced diplomas (10.0%) and certificate qualifications (28.1%). Formal study engages 23.5% of the local population. Breaking down this cohort, 9.0% attend primary school, 7.0% are enrolled in secondary education, and 2.3% are engaged in tertiary studies.

Frequently Asked Questions - Education

What percentage of people in the suburb of Wonthaggi have university qualifications?
15.1% of people aged 15 and over in the suburb of Wonthaggi have university qualifications, compared to 21.7% in the broader region.
What percentage of people in the suburb of Wonthaggi have no formal qualifications?
46.8% of people aged 15 and over in the suburb of Wonthaggi have no formal qualifications, compared to 40.4% regionally.
How does the suburb of Wonthaggi's education level compare to national averages?
The suburb of wonthaggi ranks in the 25th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
What types of qualifications are most common in the suburb of Wonthaggi?
The most common qualifications in the suburb of Wonthaggi are: Certificate (28.1%), Bachelor Degree (10.4%), Advanced Diploma (10.0%).
What proportion of the suburb of Wonthaggi's population is currently attending educational institutions?
23.5% of the population in the suburb of Wonthaggi is currently engaged in formal education, with 9.0% in primary school, 7.0% in secondary school, 2.3% at university.
What is the ICSEA score for schools in the suburb of Wonthaggi?
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the suburb of Wonthaggi is 976, indicating below-average socio-educational advantage compared to the national average of 1000.
How many schools are located within the suburb of Wonthaggi?
There are 8 schools within the suburb of Wonthaggi, with a combined enrollment of approximately 2,547 students.
What types of schools are available in the suburb of Wonthaggi?
The suburb of wonthaggi includes 3 primary schools, 4 secondary schools, 1 combined school.

Schools Detail

AmenitiesServices & Amenities in Wonthaggi

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Getting AroundTransport & Commuting in Wonthaggi

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Public transport in Wonthaggi reaches 30 stops on 7 routes, timetabled for about 180 services a week. The typical home sits about 320 m from its nearest stop. Households keep an average of 1.0 vehicles. Stop and service counts are built from operators' published GTFS timetables and refresh with each timetable release; vehicle ownership is from the 2021 Census.

Detail

Public transit infrastructure in Wonthaggi comprises 30 operational stops across 7 separate routes, delivering 175 weekly passenger services. Transit accessibility is rated as good, with residents situated an average of 324 meters from their nearest boarding point. Due to the area's residential profile, outward commuting is standard; private vehicles serve as the main travel method for 89% of commuters, while 8% walk. Average motor vehicle ownership is 1.0 per household, below the regional figure. Working from home accounted for a relatively low 11.5% of workers during the 2021 Census, reflecting conditions during COVID-19.

Transit services maintain an average frequency of 25 trips daily across the entire network, which translates to roughly 5 weekly departures for each individual stop.

Frequently Asked Questions - Transport

How many public transport stops are in Wonthaggi?
There are 30 public transport stops within the suburb of Wonthaggi.
How frequent are the transport services in Wonthaggi?
the suburb of Wonthaggi has 175 weekly trips across 7 routes, averaging 25 trips per day.
How far are residents from public transport in Wonthaggi?
On average, residential properties are 324 meters from the nearest transport stop.

Transport Stops Detail

HealthcareHealth Services in Wonthaggi

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53.5% of residents in Wonthaggi report no long-term health condition, a less healthy profile than 90% of areas nationally. 12.1% need daily assistance with core activities, and 45.4% hold private health cover. The standardised death rate runs at 7.1 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.

Detail

Evaluation of chronic illnesses and mortality by AreaSearch highlights significant health considerations in Wonthaggi across both younger and older demographics. Private health insurance coverage is notably restricted, encompassing approximately 45% of residents (~2,808 people). This compares to 50.5% in Regional Vic. and a national benchmark of 55.7%. Arthritis and mental health conditions are the most prevalent ailments, impacting 13.6% and 10.8% of the community respectively, while 53.5% of residents reported having no long-term health conditions, compared to 63.4% in Regional Vic.. Chronic illness rates remain prominent among the working-age population.

Furthermore, seniors aged 65 and over represent 38.2% of the population (2,364 people), substantially higher than the 24.0% regional proportion. Health metrics for older residents present specific challenges, tracking closely with national averages across the broader population.

Frequently Asked Questions - Health

How many people in the suburb of Wonthaggi have private health insurance?
Around 45.4% of people in the suburb of Wonthaggi are covered by private health insurance, which compares to 50.5% in the broader region of Regional Vic..
What percentage of the population requires ongoing medical assistance in the suburb of Wonthaggi?
In the suburb of Wonthaggi, 12.1% of the population is identified as requiring ongoing medical assistance. This figure is slightly different from the regional average, where 6.9% of people in Regional Vic. require similar assistance.
How prevalent is asthma in the suburb of Wonthaggi?
8.0% of people in the suburb of Wonthaggi are diagnosed with asthma. In comparison, 8.7% of the population across Regional Vic. is affected by asthma.
What percentage of people have diabetes in the suburb of Wonthaggi?
Diabetes affects 6.2% of the the suburb of Wonthaggi population, while in the surrounding region, 4.6% of people are diagnosed with diabetes.
What is the percentage of people with heart disease in the suburb of Wonthaggi?
6.9% of people in the suburb of Wonthaggi have heart disease. Across the region of Regional Vic., 4.4% of the population is affected by heart disease.
How does the suburb of Wonthaggi compare to the region in terms of overall private health coverage?
In the suburb of Wonthaggi, 45.4% of the population are estimated to have private health insurance. Comparatively, Regional Vic. sees an estimated private health coverage rate of 50.5%.

Ancestry & LanguageCultural Diversity in Wonthaggi

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Wonthaggi is largely Australian-born, at 84.2% of residents, with 5.3% speaking a language other than English at home. The largest reported ancestries are English (32.6%) and Australian (29.7%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.

Detail

Cultural diversity metrics in Wonthaggi track below broader averages, with Australian citizenship at 88.8%, Australian-born residents at 84.2%, and 94.7% of households speaking exclusively English at home. Christianity constitutes the primary religious affiliation, comprising 47.6% of residents. The most noticeable variation is in the Other religious category, representing 0.8% locally compared to 0.8% across Regional Vic.. Looking at ancestral backgrounds based on parental country of birth, the three most common ancestries are English (32.6%), Australian (29.7%), and Scottish (9.7%). Distinct representation is also visible across several other groups, including Italian at 5.3% (against 2.9% regionally), Dutch at 1.8% (against 1.7% regionally), and Welsh at 0.6% (against 0.4% regionally).

Frequently Asked Questions - Diversity

What is the level of cultural diversity in the suburb of Wonthaggi?
Wonthaggi was found to be below average in terms of cultural diversity, with 88.8% of its population being citizens, 84.2% born in Australia, and 94.7% speaking English only at home.
What is the most common religion in the suburb of Wonthaggi?
The main religion in Wonthaggi was found to be Christianity, which makes up 47.6% of people in Wonthaggi. However, the most apparent overrepresentation was in Other, which comprises 0.8% of the population, compared to 0.8% across Regional Vic..
What are the top countries of origin in the suburb of Wonthaggi?
In terms of ancestry (country of birth of parents), the top three represented groups in Wonthaggi are English, comprising 32.6% of the population, Australian, comprising 29.7% of the population, and Scottish, comprising 9.7% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: Dutch is notably overrepresented at 1.8% of Wonthaggi (vs 1.7% regionally), Italian at 5.3% (vs 2.9%) and Welsh at 0.6% (vs 0.4%).
How does the percentage of people born overseas compare to the regional average?
15.8% of the the suburb of Wonthaggi population was born overseas, compared to 13.2% regionally.
What percentage of the the suburb of Wonthaggi population speaks a language other than English at home?
5.3% of the population in the suburb of Wonthaggi speaks a language other than English at home, compared to 7.6% in the wider region.
How many people in the suburb of Wonthaggi identify as Australian Aboriginal?
1.6% of the the suburb of Wonthaggi population identifies as Australian Aboriginal, compared to 1.4% in the region.
What is the citizenship status of the population in the suburb of Wonthaggi?
88.8% of the the suburb of Wonthaggi population holds citizenship, compared to 88.6% in the wider region.

Age StructureAge Profile of Wonthaggi

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The median resident of Wonthaggi is 55, older than 97% of areas nationally. 17.6% of residents are aged 15 to 34. Age cohorts are not raw Census counts: the Census split is re-based to the latest ABS population estimates and state projections.

Detail

The age distribution in Wonthaggi is comparatively mature relative to the broader region. Individuals aged 65 and over constitute 38.2% of the population as at August 2026, compared to 24.0% across Regional Vic., while younger cohorts aged 0 - 24 represent 21.1% against 28.5% regionally. The estimated median age sits at 55 as at August 2026, mirroring the 2021 Census figure, which was 12 years higher than the Regional Vic. median of 43 and above the national median of 38 at that Census. Since that Census, the proportion of residents aged 65 and over has increased from 35.1% to an estimated 38.2%.

Between now and 2041, the largest numerical increase will occur among residents aged 65 and over, rising by 829 residents (35%) to reach 3,194. In percentage terms, the fastest expanding cohort will be adults aged 25 - 44, projected to grow 74% to 1,851 residents.

Frequently Asked Questions - Age

What is the median age in the suburb of Wonthaggi?
AreaSearch estimates the median age in the suburb of Wonthaggi at 55 years as at August 2026. That is in line with the 2021 Census figure of 55 years, on an age profile AreaSearch re-estimates for population change recorded since the Census.
How does the suburb of Wonthaggi's median age compare to broader areas?
At an estimated 55 years as at August 2026, Wonthaggi is 12 years older than the Regional Vic. 2021 Census average (43 years) and 17 years older than the national Census average (38 years).
What age groups are over-represented in the suburb of Wonthaggi?
On AreaSearch estimates updated to August 2026, the most over-represented age group in the suburb of Wonthaggi compared to the Regional Vic. region is the 65 - 74 group, making up 19.0% of the population.
What age groups are under-represented in the suburb of Wonthaggi?
On AreaSearch estimates updated to August 2026, the most under-represented age group in the suburb of Wonthaggi compared to the Regional Vic. region is the 5 - 14 group, making up 7.9% of the population.
Are there age groups with notable population variances?
Yes, certain age groups in the suburb of Wonthaggi show significant variance compared to the Regional Vic. region. The most over-represented age groups are 85+ year-olds (5.2% vs 2.9%) and 75-84 year-olds (14.0% vs 8.4%).
What is the percentage of children (0-14 years) in the suburb of Wonthaggi?
AreaSearch estimates children aged 0-14 years at 11.7% of the population in the suburb of Wonthaggi as at August 2026.
What is the percentage of older people (65+ years) in the suburb of Wonthaggi?
AreaSearch estimates people aged 65 and over at 38.2% of the population in the suburb of Wonthaggi as at August 2026.

Data & MethodBoundaries, Sources & Method for Wonthaggi

Data currency Refreshed

9 of 14 data sections on this page were updated within the last 12 months — the newest current to Oct 2026.

Everything is aggregated to the Suburb (SAL) boundary shown above, on a 2021 Census baseline. Only 3 sections — housing, households and cultural diversity — still wait on the 2026 Census.

The ledger — source, cycle and currency by section

Section Source & update cycle Currency
Updated within the last 12 months 9 sections
Population ABS, GNAF, Geoscience Australia Annual (ABS ERP) Aug 2026 2 months ago headline measures · 2021 Census baseline
Re-based to the ABS Estimated Resident Population (June 2025 release) and updated with new dwellings from GNAF address data. Current to Aug 2026, with the 2021 Census supplying the small-area baseline.
Age profile ABS, Geoscience Australia, State governments Annual Aug 2026 2 months ago headline measures · 2021 Census baseline
Age cohorts are re-based to the latest ABS population estimates and state projections, current to Aug 2026. Each cohort is held as a Census baseline and a current estimate.
Development & approvals ABS, GNAF Monthly (ABS approvals) Aug 2026 2 months ago headline measures · Jul 2026 baseline
Property sales & rents Valuer General, Rental Board, ABS Weekly sales, quarterly rents Oct 2026 this month headline measures · Sep 2026 baseline
Sales from the state Valuer General register, refreshed weekly, and rents from quarterly rental bond lodgements. Both are read live each time this page loads, current to Oct 2026.
Infrastructure projects Infrastructure Australia, State agencies, Local governments Daily Aug 2026 2 months ago all 17 projects tracked here
Project pipeline maintained continuously from Infrastructure Australia, state agencies, local government and public announcements. Records are added and revised daily; this area was last updated Aug 2026.
Employment ABS, DEWR, JSA Quarterly (ABS SALM) Mar 2026 7 months ago headline measures · 2021 Census baseline
Unemployment and labour force from ABS Small Area Labour Markets, current to Mar 2026. The growth outlook applies Department of Employment (now Jobs and Skills Australia) forecasts for all 19 industry divisions to the local industry mix, so it measures sector composition rather than local expansion and makes no allowance for population growth. Job demand comes from the same agency via its Internet Vacancy Index; industry and occupation structure from the 2021 Census.
Education ABS, ACARA Annual (ACARA) Sep 2026 last month headline measures · 2021 Census baseline
Transport ABS, State Transport Departments Each timetable release Jul 2026 3 months ago headline measures · 2021 Census baseline
Services & amenities Provider directories, ACECQA Continuous Sep 2026 last month all 14 measures
Annual and financial-year sources 2 sections
Income ABS, ATO Annual (ATO) FY 2023 3 years ago headline measures · 2021 Census baseline
ATO taxable income statistics for FY 2023, indexed forward using the Wage Price Index. Census household income provides the distribution detail.
Health ABS, ATO Annual 2024 2 years ago headline measures · 2021 Census baseline
Census-measured — next update: 2026 Census 3 sections No more current small-area source exists for these, so they are labelled as Census-measured rather than implied to be current.
Housing ABS 5-yearly (Census) 2021 Census next update 2026 all 30 measures
Households ABS 5-yearly (Census) 2021 Census next update 2026 all 18 measures
Cultural diversity ABS, Geoscience Australia 5-yearly (Census) 2021 Census next update 2026 all 44 measures

"Currency" is the most recent release feeding that section. Where the Census supplies the structural baseline underneath a current headline figure, the row says so.

How the numbers are built

Population

The Census provides the small-area baseline, aggregated from mesh blocks to this boundary. It is then re-based to the ABS Estimated Resident Population (June 2025 release), and new dwellings built since Census night are counted from address data — 328 validated new addresses here. The headline figure is therefore a current estimate for Aug 2026, not a 2021 count (5,215 at the 2021 Census → 6,191 now). Annual growth rates are compound (CAGR), not simple averages.

Age profile

Cohort shares are not raw Census counts. Every cohort is held as a pair — the Census baseline and a current estimate — and the split is re-based using ERP and state population projections, current to Aug 2026. Median age is the Census median plus modelled change since. Charts that show both are labelled "2021 Census vs Current Estimate".

Property sales

Sourced from the state valuation authority's sales register — current, not Census, and refreshed weekly. Medians are calculated from settled transactions in the period shown; periods with very low transaction counts are flagged or suppressed, because a handful of sales can move a median substantially.

Rents

Derived from state rental bond lodgement data, by dwelling type and bedroom count. Bonds are lodged at the start of a new tenancy, so this reflects new lettings, not the whole rented stock.

Development & infrastructure

Building approvals come from current ABS releases; development applications are collected from council and state planning portals; the infrastructure pipeline is compiled from Infrastructure Australia and local government sources. Applications are matched to this boundary by address or coordinates, so very recent lodgements may not yet appear.

Employment & income

Industry and occupation structure comes from the Census, but the headline labour-market indicators do not. Unemployment and labour force are derived from ABS Small Area Labour Markets (quarterly). The employment outlook applies Department of Employment forecasts for all 19 industry divisions to this area's own industry mix (the agency is now Jobs and Skills Australia), as does the Internet Vacancy Index used for job demand. Because it is weighted on industry composition alone, that outlook carries no allowance for local population growth — in fast-growing areas the real rise in local jobs will typically be higher. Income combines Census household income with ATO taxable-income statistics for FY 2023, indexed forward using the Wage Price Index.

Education, transport & amenities

School enrolments, ICSEA and performance come from ACARA's current release, not the Census. Public transport stops and service frequency are derived from GTFS timetable feeds published by state transport departments. Services and amenities are proximity and count scores built from provider directories, refreshed on their own cycle. The Census contributes only the travel-to-work and qualification measures.

Rankings and benchmarks. Where we rank this area, the comparison set is every area of the same boundary type — suburbs against suburbs, SA2s against SA2s. Benchmarks compare this area against its greater capital city region and the national figure for the same measure and period.

Limits worth knowing. Small areas carry larger error margins, and the ABS introduces small random adjustments to Census counts to protect confidentiality — so totals may not sum exactly. Estimates re-based from regional data describe the area's expected trajectory, not a direct count of it. Figures are indicative for research and are not financial, planning or valuation advice.

Cross-check us. The Census baseline for this boundary is at ABS 2021 Census QuickStats (SAL22829). QuickStats reports 2021 only — the figures on this page are more current wherever the ledger shows a later date.

Common questions about this page

How do Wonthaggi suburb boundaries differ from Statistical Areas?
This page uses Suburbs and Localities (SAL) boundaries (suburb-style geography). SAL represents commonly-known suburb names used in addresses, while Statistical Areas (SA2) are designed for census/statistical reporting. Even when sharing the same name, SAL and SA2 boundaries often cover different geographic areas with different populations.
Where does the data on this Wonthaggi page come from?
AreaSearch compiles this page from official and industry sources — including ABS, Geoscience Australia, Valuer General, Provider directories, DEWR, JSA, State Transport Departments and ACARA — then aggregates them to the boundary shown and calculates the rankings, growth rates and benchmarks itself. Property sales come from the state valuation authority, rents from state rental bond lodgements, development applications from council and state planning portals, school data from ACARA, and public transport from state transport departments.
Is the Wonthaggi data on this page just from the 2021 Census?
No. Most of this page is maintained well beyond the Census. Sourced entirely from current releases: development & approvals (Aug 2026), property sales & rents (Oct 2026), infrastructure projects (Aug 2026) and services & amenities (Sep 2026). Built on a Census baseline but carrying newer measures on top: population (to Aug 2026), age profile (to Aug 2026), employment (to Mar 2026), income (to FY 2023), education (to Sep 2026), transport (to Jul 2026) and health (to 2024). Population and age cohorts in particular are re-based to the latest ABS Estimated Resident Population rather than left at 2021 counts. Only housing, households and cultural diversity remain wholly Census-based, because no more current small-area dataset exists for those measures.

Nearby Areas