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 20,166 as of November 2025, according to AreaSearch's analysis. This figure represents a growth of 4,267 people since the 2021 Census, which reported a population of 15,899. The increase is inferred from ABS estimates: an ERP of 19,035 in June 2024 and additional validated addresses totalling 1,191 since the Census date. This results in a density ratio of 319 persons per square kilometer. Thornton-Millers Forest's growth rate of 26.8% from 2021 to 2025 exceeded both Rest of NSW (5.7%) and the state average, positioning it as a regional growth leader. Interstate migration contributed approximately 70.7% of overall population gains in recent periods, with all drivers including natural growth and overseas migration being positive factors.

AreaSearch uses ABS/Geoscience Australia projections for each SA2 area, released in 2024 with 2022 as the base year. For areas not covered by this data, NSW State Government's SA2 level projections are used, released in 2022 with 2021 as the base year. Growth rates by age group from these aggregations are applied to all areas for years 2032 to 2041. Future 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 19,535 persons based on latest annual ERP population numbers, reflecting a total gain of 91.2% over the 17 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 156 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 exceeds the supply of new dwellings, typically leading to price growth and increased buyer competition. The average construction cost value for new dwellings is around $270,000, which is below regional levels, offering more affordable housing options for buyers. In FY26, there have been $4.9 million in commercial approvals, indicating the area's primarily residential nature. Compared to the rest of NSW, Thornton - Millers Forest shows 82.0% higher construction activity per person, suggesting ample choice for buyers. However, construction activity has recently eased. This high level of activity reflects strong developer confidence in the area.

The new building activity comprises approximately 74.0% detached houses and 26.0% attached dwellings, maintaining the area's traditional low-density character focused on family homes. This shift from the existing housing composition (currently 95.0% houses) indicates decreasing availability of developable sites and reflects changing lifestyles and demand for more diverse, affordable housing options. With around 64 people per approval, Thornton - Millers Forest is a developing area. According to AreaSearch's latest quarterly estimate, the area is projected to add approximately 18,392 residents by 2041. Development is keeping pace with projected growth; however, buyers may face increasing competition as the population expands.

Thornton - Millers Forest has strong levels of nearby infrastructure activity, ranking in the top 30% nationally

The performance of a local area can significantly influenced by changes in infrastructure, major projects, and planning initiatives. AreaSearch has identified 23 such projects that are expected to impact the area. Notable projects include Raymond Terrace and Heatherbrae Strategy (2020-2040), Chisholm Plaza, Thornton Rail Bridge Duplication, and Sophia Waters Estate. The following list details those projects likely to be 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 an unemployment rate of 1.8% as of September 2025, with 10,156 residents employed. This is below the Rest of NSW's rate of 3.8%. The workforce participation rate is 70.3%, higher than Rest of NSW's 61.5%.

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. Public administration & safety employs 1.3 times the regional level, while agriculture, forestry & fishing employs just 0.9%, below Rest of NSW's 5.3%. Between May-24 and April-25, labour force decreased by 1.8% and employment fell by 1.7%, reducing unemployment by 0.2 percentage points.

In contrast, Rest of NSW saw employment contract by 0.5%, labour force fall by 0.1%, and unemployment rise by 0.4 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 project a 6.6% increase over five years and 13.7% over ten years nationally. 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.

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

Thornton-Millers Forest SA2's median income among taxpayers was $59,416 and average income was $68,522 in financial year 2023. These figures compare to Rest of NSW's median income of $52,390 and average income of $65,215. By September 2025, estimated median income would be approximately $64,680 and average income around $74,593 based on Wage Price Index growth since financial year 2023. According to the 2021 Census, household incomes in Thornton-Millers Forest rank between the 72nd and 78th percentiles nationally. Income analysis shows that 40.7% of residents earn $1,500-$2,999 weekly, consistent with broader trends across metropolitan regions at 29.9%. High housing costs consume 15.4% of income, but strong earnings place disposable income at the 78th percentile nationally. 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 structure, as per the latest Census, consisted of 94.8% houses and 5.3% other dwellings (semi-detached, apartments, 'other' dwellings). This compares to Non-Metro NSW's figures of 82.6% houses and 17.4% other dwellings. Home ownership in Thornton-Millers Forest was at 23.9%, with mortgaged dwellings at 46.2% and rented ones at 29.9%. The median monthly mortgage repayment was $2,015, higher than Non-Metro NSW's average of $1,733. The median weekly rent in the area was $420, compared to Non-Metro NSW's $330. Nationally, Thornton-Millers Forest's mortgage repayments were higher at $2,015 versus Australia's average of $1,863, and 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 account for the remaining 15.6%, with lone person households at 12.9% and group households comprising 2.8%. The median household size is 2.9 people, which is larger than the Rest of NSW average of 2.4.

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

The area has lower university qualification rates than NSW's average. As of 2018, only 18.8% of residents had a university degree compared to the state's 32.2%. Bachelor degrees were most common at 13.6%, followed by postgraduate qualifications (3.4%) and graduate diplomas (1.8%). Many residents also held vocational credentials, with 42.8% having them as of 2019.

This included advanced diplomas (10.9%) and certificates (31.9%). Educational participation was high in the area, with 30.8% enrolled in formal education as of 2020. This included primary education (11.1%), secondary education (7.8%), and tertiary education (4.6%).

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 serving a mix of train and bus services. These stops are covered by 105 individual routes, offering 5,090 weekly passenger trips in total. Transport accessibility is deemed good, with residents typically residing 233 meters from the nearest stop. As predominantly residential, most commuters travel outward, with cars being the primary mode at 96%. Vehicle ownership averages 1.9 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 daily across all routes, translating to approximately 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 residents show positive health outcomes, with mortality rates and health conditions largely matching national averages.

Common health conditions are low among the general population but higher among older at-risk groups compared to national figures. Approximately 53% of residents have private health cover, slightly above the average SA2 area's rate (~10,748 people). Mental health issues and asthma are the most prevalent medical conditions, affecting 10.7% and 9.6% respectively. Around 67.4% of residents report no medical ailments, compared to 63.3% in Rest of NSW. Working-age residents have a higher prevalence of chronic health conditions than average. The area has 11.5% of residents aged 65 and over (2,311 people), lower than the 23.0% in Rest of NSW. Health outcomes among seniors present some challenges but rank lower nationally than those of 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 had a cultural diversity below average, with 88.5% of its population born in Australia, 93.3% being citizens, and 91.9% speaking English only at home. Christianity was the main religion, comprising 56.9%. This compares to 55.9% across Rest of NSW.

The top three ancestry groups were Australian (32.5%), English (30.4%), and Scottish (7.1%). Notably, Australian Aboriginal was overrepresented at 4.4% (vs regional 4.6%), Welsh at 0.6% (vs 0.5%), and Korean at 0.3% (vs 0.1%).

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 the Rest of NSW average of 43 and significantly below the national average of 38. The 25-34 age cohort is notably over-represented at 17.6% locally compared to the Rest of NSW average, while the 65-74 age group is under-represented at 7.1%. According to post-2021 Census data, the 35-44 age group has increased from 14.6% to 16.0%, while the 55-64 cohort has decreased from 10.4% to 8.9% and the 45-54 group has dropped from 11.7% to 10.5%. Population forecasts for 2041 indicate substantial demographic changes in Thornton-Millers Forest, with the 35-44 age group projected to grow by 99%, reaching 6,423 people from 3,230.