Chart Color Schemes
This analysis uses ABS Statistical Areas Level 2 (SA2) boundaries, which can materially differ from Suburbs and Localities (SAL) even when sharing similar names.
SA2 boundaries are defined by the Australian Bureau of Statistics and are designed to represent communities for statistical reporting (e.g., census and ERP).
Suburbs and Localities (SAL) represent commonly-used suburb/locality names (postal-style areas) and may use different geographic boundaries. For comprehensive analysis, consider reviewing both boundary types if available.
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ABS ERP | -- people | --
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Sales Activity
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Sales Detail
Population
Kariong is positioned among the lower quartile of areas assessed nationally for population growth based on AreaSearch's assessment of recent, and medium term trends
Kariong's population was around 6,388 as of May 2026, a decrease of 97 people from the 2021 Census figure of 6,485. This change is inferred from ABS estimates and validated new addresses since the Census date. The population density in Kariong was 768 persons per square kilometer in recent periods. Natural growth contributed approximately 58.1% of overall population gains during these times. AreaSearch uses ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022, and NSW State Government's SA2 level projections for areas not covered by this data, released in 2022 with a base year of 2021.
Considering these projections, Kariong is expected to expand by 6 persons to the year 2041, reflecting an increase of 0.1% over the 16-year period.
Frequently Asked Questions - Population
Development
The level of residential development activity in Kariong is very low in comparison to the average area assessed nationally by AreaSearch
Kariong has averaged approximately six new dwelling approvals per year over the past five financial years, totalling 34 homes. As of FY26, seven approvals have been recorded. The area's population decline suggests that new supply has likely kept pace with demand, providing good options for buyers. New properties are constructed at an average expected cost of $248,000, which is below regional norms, reflecting more affordable housing options.
This financial year, $284,000 in commercial development approvals have been recorded, indicating the area's residential nature. Compared to Greater Sydney, Kariong has significantly less development activity, 72.0% below the regional average per person, which typically strengthens demand and prices for existing properties. This activity is also lower than nationally, suggesting market maturity and possible development constraints. New building activity comprises 80.0% detached dwellings and 20.0% townhouses or apartments, maintaining the area's traditional low density character with a focus on family homes. The estimated population per dwelling approval is 1483 people, reflecting its quiet, low activity development environment.
According to AreaSearch's latest quarterly estimate, Kariong is expected to grow by six residents through to 2041. Based on current development patterns, new housing supply should readily meet demand, offering good conditions for buyers and potentially facilitating population growth beyond current projections.
Frequently Asked Questions - Development
Development applications around Kariong
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| Lodged | Address | Description | Type | Distance | Status |
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SOURCE: Planning portals and council registers, compiled by AreaSearch. Distance & bearing measured from the suburb midpoint.
Infrastructure
Kariong has moderate levels of nearby infrastructure activity, ranking in the 43rdth percentile nationally
Changes to local infrastructure significantly impact an area's performance. AreaSearch has identified 0 projects that could affect this region. Notable initiatives include Northside Private Hospital, Gosford Private Hospital redevelopment, Pacific Highway And Manns Road Upgrade, and Gosford Bypass. The following list details those likely to have the most relevance.
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INFRASTRUCTURE SEARCH
Denotes AI-based impression for illustrative purposes only, not to be taken as definitive under any circumstances. Please follow links and conduct other investigations from the project's source for actual imagery. Developers and project owners wishing us to use original imagery please Contact Us and we will do so.
Frequently Asked Questions - Infrastructure
Mardi Water Treatment Plant Upgrade
An $82.5 million major upgrade to the Mardi Water Treatment Plant to future-proof water security for over 210,000 residents. The project introduces Dissolved Air Flotation (DAF) technology and new flocculation tanks to handle poor raw water conditions such as algal blooms and high turbidity. Key works include new chemical dosing systems, a new access road, and electrical switch rooms to ensure a reliable supply of up to 160 million litres of water per day.
Low and Mid-Rise Housing Policy
Comprehensive NSW state planning reforms designed to increase housing density in well-located areas. The policy mandates mid-rise apartment buildings (3-6 storeys) and low-rise multi-dwelling housing (terraces, townhouses, and dual occupancies) within 800m of 171 high-frequency transport hubs and town centres. As of May 2026, the policy is fully operational following the phased rollout of dual occupancy provisions in July 2024 and mid-rise apartment provisions in early 2025. Recent updates include refined floor space ratios (FSR) and non-refusal standards to streamline local council assessments.
Sydney Metro Program
Australia's largest public transport program, comprising multiple metro lines across Greater Sydney. The M1 City and Southwest line is operating to Sydenham, while the Sydenham to Bankstown conversion is in final testing with weekend closures scheduled from May to July 2026 as the project moves toward trial running and a second-half 2026 opening. Sydney Metro West is a 24 kilometre underground line between Westmead and Hunter Street targeting a 2032 opening, with confirmed stations at Westmead, Parramatta, Sydney Olympic Park, North Strathfield, Burwood North, Five Dock, The Bays, Pyrmont and Hunter Street. Sydney Metro Western Sydney Airport is under construction between St Marys, the new Western Sydney International Airport and Bradfield, with the objective of opening when the airport starts passenger services.
High Speed Rail - Newcastle to Sydney (Line 1)
High Speed Rail Line 1 will connect Newcastle to Sydney on a new dedicated 194km rail line with trains capable of speeds up to 320 km/h on surface sections and 200 km/h in tunnels. Around 115km of the route will run through tunnels. The line will reduce travel time between Newcastle and Sydney to around one hour, with Central Coast trips of about 30 minutes. Six stations are proposed at central Newcastle (Broadmeadow), Lake Macquarie, the Central Coast (Gosford), Sydney Central, Parramatta and Western Sydney International Airport. Following release of the business case in early 2026, the project moved into a two-year Development Phase, with the Australian Government investing a further $230 million for design refinement, environmental and planning approvals, and corridor preservation. The first two major contract packages went to tender in 2026: Area Package 1 (around 35km of twin TBM tunnels, an underground station and associated civil works) and Trains, Systems and Systems Integration (supply of trains, design of all systems, rail depot and operations control centre). The Newcastle to Sydney section is estimated to cost around $61.2 billion by 2039, with a further $32 billion to extend to Western Sydney International Airport by 2042. The project is forecast to support up to 15,000 construction jobs annually at peak and add around $250 billion to the Australian economy over a 50-year appraisal period.
Mariyung Fleet (New Intercity Fleet)
The Mariyung Fleet is a 610-carriage double-deck electric train fleet (D sets) replacing the ageing V-set and Oscar fleets across the NSW intercity network. Delivered by the RailConnect NSW consortium (UGL, Hyundai Rotem, Mitsubishi Electric Australia), the trains feature wider 2x2 seating with arm rests, tray tables and cup holders, charging ports, dedicated luggage, pram and bicycle spaces, accessible toilets, dedicated wheelchair spaces, CCTV, digital information screens and Automatic Selective Door Operation. The fleet operates in 4, 6, 8 or 10-car formations. Passenger services commenced on the Central Coast & Newcastle Line on 3 December 2024, on the Blue Mountains Line on 13 October 2025, and on the South Coast Line on 14 April 2026. The South Coast Line rollout begins with seven 4 and 6-car sets, scaling to 16 trains by 2027 with 8-car sets later in 2026 and 10-car configurations in 2027. The project includes the Kangy Angy Maintenance Facility (operated by UGL on a 15-year contract) and extensive corridor upgrades including platform extensions, signalling modifications, balise installation and overhead wiring works.
Newcastle-Sydney and Wollongong-Sydney Rail Line Upgrades
Program of upgrades to existing intercity rail corridors linking Newcastle-Central Coast-Sydney and Wollongong-Sydney to reduce travel times and improve reliability. Current scope includes timetable and service changes under the Rail Service Improvement Program, targeted network upgrades (signalling, power, station works) and the introduction of the Mariyung intercity fleet on the Central Coast & Newcastle Line, alongside Federal planning led by the High Speed Rail Authority for a dedicated Sydney-Newcastle high speed corridor.
Newcastle Offshore Wind Project
The Newcastle Offshore Wind project proposes a floating wind farm off Newcastle, NSW, with an expected capacity of up to 10 gigawatts, pending a Scoping Study's results.
Gosford Private Hospital redevelopment
The development will house additional Theatres, a new Day Surgery and Recovery area, purpose-built Maternity Ward, and car parking.
Employment
AreaSearch analysis of employment trends sees Kariong performing better than 90% of local markets assessed across Australia
Kariong has a skilled workforce with an unemployment rate of 2.3% as of December 2025. This is lower than Greater Sydney's rate of 4.2%. The employment growth over the past year was estimated at 3.3%.
As of December 2025, 3,734 residents are in work and workforce participation is 75.7%, higher than Greater Sydney's 68.8%. A high proportion of residents, 30.2%, work from home. Leading employment industries include health care & social assistance, construction, and retail trade. The area has a strong specialization in health care & social assistance with an employment share of 1.2 times the regional level.
However, professional & technical services are under-represented at 6.7% compared to Greater Sydney's 11.5%. Employment opportunities locally may be limited as indicated by Census data comparing working population and resident population. Between December 2024 and December 2025, employment levels increased by 3.3% and labour force increased by 3.6%, causing the unemployment rate to rise by 0.2 percentage points. In contrast, Greater Sydney experienced employment growth of 2.2% and labour force growth of 2.3%. National employment forecasts from Jobs and Skills Australia indicate that national employment is projected to expand by 6.6% over five years and 13.7% over ten years. Applying these projections to Kariong's employment mix suggests local employment should increase by 6.6% over five years and 13.8% over ten years, based on a simple weighting extrapolation for illustrative purposes.
Frequently Asked Questions - Employment
Income
The area exhibits notably strong income performance, ranking higher than 70% of areas assessed nationally through AreaSearch analysis
AreaSearch's latest postcode level ATO data released for financial year 2023 shows Kariong SA2 had a median income among taxpayers of $59,505 and an average of $74,984. These figures are higher than the national averages. Comparing with Greater Sydney, Kariong's median is $59,505 vs $60,817, and its average is $74,984 vs $83,003. Based on Wage Price Index growth of 10.32% since financial year 2023, estimated incomes as of March 2026 would be approximately $65,646 (median) and $82,722 (average). Census data reveals household income ranks at the 78th percentile ($2,200 weekly), while personal income is at the 59th percentile. Distribution data shows the $1,500 - $2,999 earnings band captures 39.9% of Kariong's community (2,548 individuals), aligning with the broader area where this cohort represents 30.9%. High housing costs consume 16.0% of income, but strong earnings place disposable income at the 77th percentile. The area's SEIFA income ranking places it in the 6th decile.
Frequently Asked Questions - Income
Housing
Kariong is characterized by a predominantly suburban housing profile, with ownership patterns similar to the broader region
Kariong's dwelling structure, as per the latest Census, consisted of 92.2% houses and 7.8% other dwellings (semi-detached, apartments, 'other' dwellings). This compares to Sydney metro's 55.9% houses and 44.1% other dwellings. Home ownership in Kariong was at 25.1%, with the rest of dwellings either mortgaged (52.3%) or rented (22.6%). The median monthly mortgage repayment in the area was $2,080, below Sydney metro's average of $2,427. Median weekly rent in Kariong was $450, compared to Sydney metro's $470. Nationally, Kariong's mortgage repayments were higher at $2,080 versus Australia's average of $1,863, while rents were substantially above the national figure of $375.
Frequently Asked Questions - Housing
Household Composition
Kariong features high concentrations of family households, with a higher-than-average median household size
Family households account for 82.9% of all households, including 44.5% that are couples with children, 24.4% that are couples without children, and 13.3% that are single parent families. Non-family households make up the remaining 17.1%, with lone person households at 15.1% and group households comprising 2.0%. The median household size is 3.0 people, larger than the Greater Sydney average of 2.7.
Frequently Asked Questions - Households
Local Schools & Education
Educational outcomes in Kariong fall within the lower quartile nationally, indicating opportunities for improvement in qualification attainment
The area's university qualification rate is 20.7%, significantly lower than Greater Sydney's average of 38.0%. Bachelor degrees are the most common at 15.0%, followed by postgraduate qualifications (3.9%) and graduate diplomas (1.8%). Vocational credentials are prominent, with 41.9% of residents aged 15+ holding them, including advanced diplomas (12.7%) and certificates (29.2%). Educational participation is high at 32.2%, with 11.4% in primary education, 9.7% in secondary education, and 3.9% in tertiary education.
Educational participation is notably high, with 32.2% of residents currently enrolled in formal education. This includes 11.4% in primary education, 9.7% in secondary education, and 3.9% pursuing tertiary education.
Frequently Asked Questions - Education
Schools Detail
Nearby Services & Amenities
Transport
Transport servicing is low compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility
Kariong has 35 active public transport stops, all of which are bus stops. These stops are served by 27 different routes that together facilitate 443 weekly passenger trips. The accessibility of these transport services is rated as excellent, with residents typically living just 199 meters from the nearest stop. Most residents in this predominantly residential area commute outward using private vehicles, which remain the dominant mode of transport at 92%. On average, there are 1.8 vehicles per dwelling, exceeding the regional average. According to the 2021 Census, a significant 30.2% of residents work from home, potentially due to COVID-19 conditions.
The service frequency averages 63 trips per day across all routes, resulting in approximately 12 weekly trips per individual stop.
Frequently Asked Questions - Transport
Transport Stops Detail
Health
Health performance in Kariong is lower than average with common health conditions somewhat prevalent across both younger and older age cohorts
Kariong faces significant health challenges based on AreaSearch's assessment. Mortality rates and chronic condition prevalence are high, with common health conditions prevalent across both younger and older age cohorts.
Private health cover is very high at approximately 57% of the total population (~3615 people), compared to 59.9% across Greater Sydney. The most common medical conditions are mental health issues (9.3%) and asthma (8.9%). 69.2% of residents declared themselves completely clear of medical ailments, compared to 74.6% across Greater Sydney. Working-age residents show above average prevalence of chronic health conditions. As of the 2016 Census, 13.8% of Kariong's population is aged 65 and over (879 people), lower than Greater Sydney's 15.5%. Health outcomes among seniors present some challenges, with national rankings broadly in line with the general population.
Frequently Asked Questions - Health
Cultural Diversity
In terms of cultural diversity, Kariong records figures broadly comparable to the national average, as found in AreaSearch's assessment of a number of language and cultural background related metrics
Kariong's population, born in Australia, was 81.0%. Citizenship stood at 91.2%, with English spoken exclusively at home by 88.9%. Christianity dominated religious demographics at 51.4%.
Judaism, however, was overrepresented at 0.2% compared to Greater Sydney's 0.8%. Ancestry-wise, Australian heritage led at 30.4%, higher than the regional average of 17.8%. English ancestry followed at 28.4%, exceeding the regional average of 19.0%. Irish ancestry was also notable at 7.2%. Some ethnic groups showed significant differences: Russian at 0.5% (regional: 0.4%), Lebanese at 0.9% (regional: 2.6%), and Welsh at 0.7% (regional: 0.4%).
Frequently Asked Questions - Diversity
Age
Kariong's population is slightly younger than the national pattern
Kariong's median age is 36 years, nearly matching Greater Sydney's average of 37 years, which is modestly under the Australian median of 38 years. Compared to Greater Sydney, Kariong has a higher proportion of residents aged 5-14 (14.6%) but fewer residents aged 25-34 (11.8%). Between the 2021 Census and present, the population aged 65-74 has grown from 6.4% to 8.2%, while the 45-54 cohort has declined from 14.9% to 13.8% and the 35-44 group has dropped from 14.4% to 13.4%. By 2041, demographic modeling suggests significant changes in Kariong's age profile. The 75-84 cohort is projected to grow by 97%, adding 243 residents to reach 496. Residents aged 65 and above will drive all population growth, highlighting demographic aging trends. Conversely, the 25-34 and 45-54 cohorts are expected to experience population declines.