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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.
est. as @ -- *
2021 Census | -- people
Sales Activity
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Population
Mardi is positioned among the lower quartile of areas assessed nationally for population growth based on AreaSearch's assessment of recent, and medium term trends
The estimated population of Mardi, based on ABS updates and AreaSearch validation, stands at approximately 3,648 as of Feb 2026. This figure represents an increase of 50 people since the 2021 Census, which reported a population of 3,598. The change is inferred from AreaSearch's estimated resident population of 3,640 in Jun 2024 and two additional validated new addresses since the Census date. This results in a density ratio of 384 persons per square kilometer. Mardi's growth rate of 1.4% since the census places it within 2.3 percentage points of its SA4 region, indicating competitive growth fundamentals. Overseas migration contributed approximately 63.0% of overall population gains during recent periods.
AreaSearch projections for Mardi are based on ABS/Geoscience Australia data released in 2024 with a base year of 2022. For areas not covered by this data, NSW State Government's SA2 level projections released in 2022 with a base year of 2021 are used. Growth rates by age group from these aggregations are applied to all areas for years 2032 to 2041. Looking ahead, population projections indicate an increase just below the Australian median statistical area average, with Mardi expected to grow by 260 persons to reach a total of 3,908 by 2041, reflecting a 7.5% increase over the 17-year period.
Frequently Asked Questions - Population
Development
The level of residential development activity in Mardi is very low in comparison to the average area assessed nationally by AreaSearch
AreaSearch analysis of ABS building approval numbers in Mardi indicates virtually no dwelling approvals in recent years. Between FY21 and FY25, an estimated 4 homes were approved, with 0 so far in FY26. The population has fallen during this period, yet housing supply has remained adequate relative to demand, resulting in a well-balanced market with good buyer choice.
New properties are constructed at an average value of $383,000. This financial year, $40,000 in commercial development approvals have been recorded, reflecting the area's residential nature. Compared to Greater Sydney, Mardi shows substantially reduced construction activity, which generally supports stronger demand and values for established homes. However, building activity has accelerated in recent years, suggesting possible planning constraints. Recent development has comprised entirely of detached dwellings, maintaining the area's traditional low density character with a focus on family homes. This favours detached housing more than current patterns suggest (78.0% at Census), indicating ongoing robust demand for family homes despite increasing density pressures. The estimated count of 1820 people per dwelling approval reflects Mardi's quiet, low activity development environment.
Frequently Asked Questions - Development
Infrastructure
Mardi has very high levels of nearby infrastructure activity, ranking in the top 20% nationally
Changes to local infrastructure significantly impact an area's performance. AreaSearch has identified 12 projects likely to affect the region. Notable initiatives include the Wyong South Sewage Treatment Plant Upgrade, Tuggerah Precinct Activation-Westfield Redevelopment, M1 Pacific Motorway Tuggerah to Doyalson Widening, and Sinclair Crescent Housing Development-Wyong. The following list details those most relevant.
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INFRASTRUCTURE SEARCH
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Frequently Asked Questions - Infrastructure
Mardi Water Treatment Plant Upgrade
An $82.5 million major upgrade to the Mardi Water Treatment Plant to enhance drinking water quality and security for over 210,000 residents. Key works include the construction of a new Dissolved Air Flotation (DAF) clarifier, flocculation tanks, and upgraded chemical dosing facilities to handle poor raw water conditions such as algal blooms and high turbidity. The project will ensure a reliable supply of up to 160 million litres of water per day.
Wyong Hospital Redevelopment - Stage 3
The third and final stage of the $200 million Wyong Hospital Redevelopment is now complete. This stage delivered a $6.4 million expansion of the Wyong Cancer Centre with eight new consultation rooms, a new Women's Outpatients service for antenatal clinics, and an expanded NSW Pathology laboratory. The redevelopment also includes dedicated spaces for the Nunyara Aboriginal Health Unit, the Carer Support Unit, and new modern medical workspaces to support clinical teams. While the Cancer Centre and pathology lab are operational, remaining services are set to open in a staged approach throughout early 2026.
Greater Warnervale Structure Plan
A long-term strategic framework adopted by Central Coast Council in July 2024 to manage growth in the northern Central Coast over the next 20 years. The plan facilitates an expected population increase from 20,000 to approximately 57,000 residents, supported by 10,130 new dwellings. Key features include the establishment of two neighborhood centres, employment land development, and significant environmental protections for Porters Creek Wetland. As of 2026, the plan serves as the primary guidance for ongoing precinct-level rezonings and local infrastructure priority lists.
Tuggerah Precinct Activation - Westfield Redevelopment
A transformational $2.8 billion mixed-use redevelopment of Westfield Tuggerah and the surrounding 70.85-hectare Tuggerah Gateway site. The project establishes a new town centre featuring up to 5,000 new dwellings, including a mix of apartments, townhouses, and senior living. The masterplan integrates a $700 million transport interchange at Tuggerah Station, 18 hectares of parkland, health and education services, and a significant expansion of retail and leisure facilities. The Tuggerah Gateway Planning Proposal (PP-2021-5416) was officially published and notified in April 2025, rezoning the site to R1 General Residential and MU1 Mixed Use to facilitate this 35-year vision.
Warnervale Water and Sewer Infrastructure Program
A multi-stage infrastructure program by Central Coast Council to support the Greater Warnervale growth corridor. The program includes the completed 9.4km Mardi to Warnervale Pipeline, ongoing water and sewer network extensions for the Warnervale Town Centre, and a major $82.5 million upgrade of the Mardi Water Treatment Plant. The plant upgrade involves new flocculation and Dissolved Air Flotation (DAF) systems to increase capacity to 160 million litres per day and improve water quality during poor raw water conditions.
Warnervale Link Road
Key enabling transport infrastructure project - new arterial road connecting the M1 Motorway to the Warnervale area, improving traffic flow and supporting future development in the Warnervale business and residential precincts. Enhances Central Coast connectivity and economic potential, supporting residential and business growth.
Wyong South Sewage Treatment Plant Upgrade
Major upgrade and expansion of the Wyong South Sewage Treatment Plant to increase capacity, improve treatment processes and environmental performance for the growing Central Coast population and support population growth in the northern Central Coast region.
Pacific Highway Upgrade through Wyong Town Centre
Major road infrastructure project to duplicate the Pacific Highway to two lanes in each direction between Johnson Road, Tuggerah and Cutler Drive, Wyong. Key features include replacing the Wyong River road bridge with a new four-lane bridge, upgrading the Rose Street rail bridge, and improving the Wyong Station transport interchange. The project aims to reduce congestion, improve travel times, and enhance safety for over 51,000 vehicles per day while providing new active transport facilities including a dedicated off-road cycleway.
Employment
AreaSearch analysis reveals Mardi significantly outperforming the majority of regions assessed nationwide
Mardi has a skilled workforce with prominent representation in essential services sectors. Its unemployment rate is 2.5%, lower than Greater Sydney's 4.2%. Employment growth over the past year was estimated at 3.1% based on AreaSearch aggregation of statistical area data.
As of December 2025, 2,006 residents are employed with an unemployment rate of 1.6% below Greater Sydney's rate. Workforce participation is equal to Greater Sydney's 70.2%. According to Census responses, 28.5% of residents work from home, but Covid-19 lockdown impacts should be considered.
Employment among residents is concentrated in health care & social assistance (34%), retail trade (26%), and construction (15%). Professional & technical services employ only 6.6% of local workers compared to Greater Sydney's 11.5%. The area functions as an employment hub with 1.0 worker per resident, hosting more jobs than residents and attracting workers from surrounding areas. During the year to December 2025, employment levels increased by 3.1%, labour force grew by 3.8%, resulting in a rise of unemployment by 0.7 percentage points. In contrast, Greater Sydney experienced employment growth of 2.2% and labour force growth of 2.3%. Jobs and Skills Australia's national employment forecasts from May-25 suggest that Mardi's employment should increase by 6.5% over five years and 13.5% over ten years based on industry-specific projections applied to Mardi's employment mix.
Frequently Asked Questions - Employment
Income
The area's income profile falls below national averages based on AreaSearch analysis
According to AreaSearch's aggregation of the latest postcode level ATO data released for financial year 2023, Mardi had a median income among taxpayers of $49,794. The average income stood at $60,828. This is lower than national averages, with Greater Sydney having levels of $60,817 and $83,003 respectively. Based on Wage Price Index growth of 8.86% since financial year 2023, current estimates for Mardi would be approximately $54,206 (median) and $66,217 (average) as of September 2025. From the 2021 Census, incomes in Mardi cluster around the 54th percentile nationally. Income distribution shows that 36.5% of residents (1,331 people) fall within the $1,500 - $2,999 bracket. High housing costs consume 15.9% of income. Despite this, disposable income ranks at the 62nd percentile nationally. The area's SEIFA income ranking places it in the 5th decile.
Frequently Asked Questions - Income
Housing
Mardi is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership
The latest Census evaluation found that dwelling structures in Mardi comprised 78.0% houses and 22.0% other dwellings (semi-detached, apartments, 'other' dwellings). In comparison, Sydney metro had 55.9% houses and 44.1% other dwellings. Home ownership in Mardi was at 29.3%, similar to Sydney metro's level. The remaining dwellings were either mortgaged (40.8%) or rented (29.9%). The median monthly mortgage repayment in Mardi was $1,913, below the Sydney metro average of $2,427. The median weekly rent figure in Mardi was $440, compared to Sydney metro's $470. Nationally, Mardi's mortgage repayments were higher than the Australian average of $1,863, while rents were substantially above the national figure of $375.
Frequently Asked Questions - Housing
Household Composition
Mardi features high concentrations of family households, with a higher-than-average median household size
Family households constitute 79.4% of all households, including 38.4% couples with children, 23.0% couples without children, and 17.1% single parent families. Non-family households account for the remaining 20.6%, with lone person households at 18.2% and group households comprising 2.5%. The median household size is 2.8 people, which is larger than the Greater Sydney average of 2.7.
Frequently Asked Questions - Households
Local Schools & Education
The educational profile of Mardi exceeds national averages, with above-average qualification levels and academic performance metrics
The area's university qualification rate is 21.6%, significantly lower than Greater Sydney's average of 38.0%. Bachelor degrees are the most common at 16.0%, followed by postgraduate qualifications (3.6%) and graduate diplomas (2.0%). Vocational credentials are prevalent, with 39.6% of residents aged 15+ holding them, including advanced diplomas (12.4%) and certificates (27.2%). Educational participation is high, with 32.5% currently enrolled in formal education: 12.0% in primary, 8.9% in secondary, and 4.5% in tertiary education.
Educational participation is notably high, with 32.5% of residents currently enrolled in formal education. This includes 12.0% in primary education, 8.9% in secondary education, and 4.5% pursuing tertiary education.
Frequently Asked Questions - Education
Schools Detail
Nearby Services & Amenities
Transport
Transport servicing is moderate compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility
Public transport analysis shows 30 active transport stops operating within Mardi. These stops serve a mix of bus routes, totalling 51 individual routes that provide 596 weekly passenger trips. Transport accessibility is rated excellent, with residents typically located 173 meters from the nearest stop. As a primarily residential area, most commutes are outward-bound. Car remains the dominant mode at 88%, while train usage stands at 5%. Vehicle ownership averages 1.6 per dwelling, above the regional average.
According to the 2021 Census, 28.5% of residents work from home, which may reflect COVID-19 conditions. Service frequency averages 85 trips per day across all routes, equating to approximately 19 weekly trips per individual stop.
Frequently Asked Questions - Transport
Transport Stops Detail
Health
Health performance in Mardi is lower than average with prevalence of common health conditions notable across both younger and older age cohorts
Mardi faces significant health challenges based on AreaSearch's assessment. Mortality rates and chronic condition prevalence are notable across both younger and older age cohorts.
The rate of private health cover is relatively low at approximately 51% of the total population (around 1,861 people), compared to 59.9% across Greater Sydney. The most common medical conditions in the area are mental health issues and asthma, impacting 10.2 and 8.9% of residents respectively. Approximately 65.8% of residents declare themselves completely clear of medical ailments, compared to 74.6% across Greater Sydney. Working-age residents show above average prevalence of chronic health conditions. The area has 16.5% of residents aged 65 and over (around 601 people), which is higher than the 15.4% in Greater Sydney. 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, Mardi records figures broadly comparable to the national average, as found in AreaSearch's assessment of a number of language and cultural background related metrics
Mardi's cultural diversity was found to be above average, with 20.5% of its population born overseas and 12.4% speaking a language other than English at home. Christianity was the main religion in Mardi as of 2021, comprising 56.7% of people, compared to 49.2% across Greater Sydney. Regarding ancestry, the top three represented groups were English (29.9%), Australian (27.0%), and Irish (7.8%).
Notably, Spanish was overrepresented at 0.8%, Korean at 0.7%, and South Australian at 0.7%.
Frequently Asked Questions - Diversity
Age
Mardi's population is slightly younger than the national pattern
Mardi's median age is 37, matching Greater Sydney's figure and closely resembling Australia's median age of 38. The 5-14 age group comprises 14.7%, higher than Greater Sydney's percentage. Meanwhile, the 25-34 cohort stands at 11.5%. Between 2021 and present, the 65-74 age group has risen from 7.9% to 8.8%. Conversely, the 5-14 cohort has decreased from 15.3% to 14.7%. By 2041, demographic projections indicate significant shifts in Mardi's age structure. The 75-84 group is expected to grow by 51%, reaching 297 people from a previous count of 196. Those aged 65 and above are projected to account for 71% of the population growth. Conversely, the 15-24 and 0-4 age groups are anticipated to experience population declines.