Thornton - Millers Forest

Thornton - Millers Forest lies within the top 10% of areas nationally in terms of population growth performance according to AreaSearch analysis of short and medium-term trends

Thornton - Millers Forest's population was around 20,841 as of May 2026. This figure reflects an increase since the 2021 Census when the population was 15,899 people. The growth is inferred from ABS data showing an estimated resident population of 19,937 in June 2025 and an additional 1,349 validated new addresses since the Census date. This results in a population density ratio of 330 persons per square kilometer. Thornton - Millers Forest's growth rate of 31.1% since the 2021 census exceeded that of the Rest of NSW (4.9%) and the state, indicating it as a growth leader in the region. Interstate migration contributed approximately 69.9% to overall population gains during recent periods.

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. Future population trends predict exceptional growth placing Thornton - Millers Forest in the top 10 percent of Australia's non-metropolitan areas. By 2041, the area is expected to expand by 18,115 persons based on latest annual ERP population numbers, reflecting a gain of 82.5% over the 16 years.

The level of residential development activity in Thornton - Millers Forest was found to be higher than 90% of real estate markets across the country

Thornton - Millers Forest has seen approximately 347 new homes approved annually. Over the past five financial years, from FY21 to FY25, around 1,738 homes were approved, with an additional 222 approved in FY26 so far. On average, about 3.3 new residents arrive per dwelling constructed each year over these five years.

This high demand coupled with the relatively lower supply of new dwellings has led to price growth and increased buyer competition. The average construction cost value of new dwellings is around $270,000, which is below regional levels, offering more affordable housing options. In FY26, there have been $4.9 million in commercial approvals, indicating the area's predominantly residential nature. Compared to the Rest of NSW, Thornton - Millers Forest exhibits 74.0% higher construction activity per person, suggesting ample choice for buyers, although recent construction activity has eased somewhat. This high level of activity is well above the national average and reflects strong developer confidence in the area. In terms of dwelling types, new building activity shows 74.0% detached houses and 26.0% attached dwellings, maintaining the area's traditional low-density character with a focus on family homes.

This shift from the existing housing stock (currently 95.0% houses) indicates decreasing availability of developable sites and reflects changing lifestyles and the need for more diverse, affordable housing options. With around 64 people per approval, Thornton - Millers Forest is reflective of an area experiencing development growth. Future projections estimate that by 2041, Thornton - Millers Forest will add approximately 17,199 residents (based on the latest AreaSearch quarterly estimate). Development appears to be keeping pace with projected population growth, although buyers may face increasing competition as the population continues to expand.

Thornton - Millers Forest has strong levels of nearby infrastructure activity, ranking in the top 40% nationally

Changes to local infrastructure significantly influence an area's performance. AreaSearch identified 24 projects that may impact the area. Notable projects include Chisholm Plaza, Raymond Terrace Place Plan, Thornton Rail Bridge Duplication, and Sophia Waters Estate. The following details those considered most relevant.

Professional plan users can use the search below to filter and access additional projects.

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Employment performance in Thornton - Millers Forest ranks among the strongest 15% of areas evaluated nationally

Thornton - Millers Forest has a skilled workforce with essential services sectors well represented. As of December 2025, the unemployment rate is 2.0%. The area has experienced relative employment stability over the past year.

There are 10,187 residents in work, with an unemployment rate of 1.9% below Regional NSW's rate of 3.9%. Workforce participation stands at 67.3%, compared to Regional NSW's 60.5%. According to Census responses, 22.1% of residents work from home. Employment is concentrated in health care & social assistance, public administration & safety, and retail trade.

The area shows strong specialization in public administration & safety, with an employment share of 1.3 times the regional level. Agriculture, forestry & fishing employs just 0.9% of local workers, below Regional NSW's 5.3%. The area appears to offer limited employment opportunities locally based on Census data comparing working population and resident population. Between December 2024 and December 2025, the labour force decreased by 0.5%, employment decreased by 0.4%, leaving unemployment broadly flat. In contrast, Regional NSW saw employment contract by 1.2%, labour force fall by 0.8%, and unemployment rise by 0.4 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 project national employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Thornton - Millers Forest's employment mix suggests local employment should increase by 6.3% over five years and 13.3% over ten years, based on a simple weighting extrapolation for illustrative purposes.

The area exhibits notably strong income performance, ranking higher than 70% of areas assessed nationally through AreaSearch analysis

The Thornton - Millers Forest SA2's median income among taxpayers was $59,416 and average income stood at $68,522 in financial year 2023, according to the latest ATO data aggregated by AreaSearch. This compares with figures for Regional NSW of $52,390 and $65,215 respectively. Based on Wage Price Index growth of 10.32% since financial year 2023, current estimates would be approximately $65,548 (median) and $75,593 (average) as of March 2026. According to 2021 Census figures, household, family and personal incomes all rank highly in Thornton - Millers Forest, between the 72nd and 78th percentiles nationally. Income analysis reveals that the largest segment comprises 40.7% earning $1,500 - $2,999 weekly (8,482 residents), consistent with broader trends across the metropolitan region showing 29.9% in the same category. High housing costs consume 15.4% of income, though strong earnings still place disposable income at the 78th percentile and the area's SEIFA income ranking places it in the 6th decile.

Thornton - Millers Forest is characterized by a predominantly suburban housing profile, with a higher proportion of rental properties than the broader region

Thornton-Millers Forest's dwelling structures, as per the latest Census, consisted of 94.8% houses and 5.3% other dwellings (semi-detached, apartments, 'other' dwellings). This contrasts with Regional NSW's figures of 82.6% houses and 17.4% other dwellings. Home ownership in Thornton-Millers Forest stood at 23.9%, with mortgaged dwellings at 46.2% and rented ones at 29.9%. The median monthly mortgage repayment was $2,015, exceeding Regional NSW's average of $1,733. The median weekly rent in the area was $420, compared to Regional NSW's $330. Nationally, Thornton-Millers Forest's mortgage repayments were higher than the Australian average of $1,863, while rents were substantially above the national figure of $375.

Thornton - Millers Forest features high concentrations of family households, with a higher-than-average median household size

Family households constitute 84.4% of all households, including 43.2% couples with children, 29.4% couples without children, and 10.9% single parent families. Non-family households comprise the remaining 15.6%, with lone person households at 12.9% and group households at 2.8%. The median household size is 2.9 people, which is larger than the Regional NSW average of 2.4.

Thornton - Millers Forest shows below-average educational performance compared to national benchmarks, though pockets of achievement exist

The area's university qualification rate is 18.8%, significantly lower than NSW's average of 32.2%. This presents both a challenge and an opportunity for targeted educational initiatives. Bachelor degrees are the most common at 13.6%, followed by postgraduate qualifications (3.4%) and graduate diplomas (1.8%). Trade and technical skills are prevalent, with 42.8% of residents aged 15+ holding vocational credentials – advanced diplomas (10.9%) and certificates (31.9%).

Educational participation is high, with 30.8% of residents currently enrolled in formal education. This includes 11.1% in primary education, 7.8% in secondary education, and 4.6% pursuing tertiary education.

Transport servicing is good compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility

Thornton - Millers Forest has 129 active public transport stops offering a mix of train and bus services. These stops are served by 105 individual routes, facilitating 5,090 weekly passenger trips in total. Transport accessibility is rated as good, with residents typically living 233 meters from the nearest stop. The area is predominantly residential, with most commuters traveling outward. Cars remain the primary mode of transport, used by 96% of residents. On average, there are 1.9 vehicles per dwelling, exceeding the regional average.

According to the 2021 Census, 22.1% of residents work from home, which may be influenced by COVID-19 conditions. Service frequency averages 727 trips per day across all routes, translating to roughly 39 weekly trips per stop. The accompanying map displays the 100 nearest stops to the location's centerpoint.

Thornton - Millers Forest's residents are healthier than average in comparison to broader Australia with prevalence of common health conditions quite low among the general population though higher than the nation's average across older, at risk cohorts

Thornton - Millers Forest's health data shows positive results, largely aligning with national benchmarks.

Common health conditions are relatively low among residents, but higher among older and at-risk groups. Approximately 53% (~11,108 people) have private health cover, slightly above the average SA2 area rate. Mental health issues and asthma are most prevalent, affecting 10.7 and 9.6% respectively, while 67.4% report no medical ailments, higher than Regional NSW's 63.3%. Working-age residents have an above-average chronic health condition prevalence. The area has 11.7% (2,444 people) aged 65 and over, lower than Regional NSW's 23.4%. Health outcomes among seniors present challenges, ranking lower nationally compared to the broader population.

Thornton - Millers Forest ranks below the Australian average when compared to other local markets across a number of language and cultural background related metrics

Thornton-Millers Forest was found to have a low level of cultural diversity, with 88.5% of its population born in Australia, 93.3% being citizens, and 91.9% speaking English only at home. The dominant religion in Thornton-Millers Forest is Christianity, comprising 56.9% of the population, compared to 55.9% across Regional NSW. The top three ancestry groups are Australian (32.5%), English (30.4%), and Scottish (7.1%).

Notably, Australian Aboriginal people are overrepresented at 4.4%, Welsh people at 0.6%, and Korean people at 0.3%, compared to regional averages of 4.6%, 0.5%, and 0.1% respectively.

Thornton - Millers Forest's young demographic places it in the bottom 15% of areas nationwide

The median age in Thornton-Millers Forest is 33 years, which is lower than Regional NSW's average of 43 and the national average of 38. The proportion of residents aged 25-34 is notably higher at 17.0%, compared to Regional NSW's average. Conversely, the percentage of those aged 65-74 is lower at 7.1%. Post-2021 Census data shows that the age group of 35 to 44 has increased from 14.6% to 16.4%, while the groups of 55 to 64 have decreased from 10.4% to 8.8% and those aged 45 to 54 have dropped from 11.7% to 10.4%. By 2041, population forecasts indicate significant demographic changes in Thornton-Millers Forest, with the 35 to 44 age group projected to grow by 84%, reaching 6,284 people from its current size of 3,420.