Normanhurst - Thornleigh - Westleigh

An assessment of population growth drivers in Normanhurst - Thornleigh - Westleigh reveals an overall ranking slightly below national averages considering recent, and medium term trends

Normanhurst-Thornleigh-Westleigh's population is 20,106 as of Feb 2026. This shows an increase of 948 people since the 2021 Census, which reported a population of 19,158. The change is inferred from ABS' June 2024 estimate of 19,799 and additional validated addresses since then. The population density is 2,012 persons per square kilometer, above national averages assessed by AreaSearch. The area's 4.9% growth since the Census is close to the SA4 region's 5.8%. Population growth was primarily driven by overseas migration, contributing approximately 91.6% of overall gains.

AreaSearch uses ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022. For areas not covered, NSW State Government's SA2 level projections are used, released in 2022 with a base year of 2021. Growth rates by age group are applied to all areas for years 2032 to 2041. Projected demographic shifts suggest lower quartile growth, with the area expected to grow by 835 persons to 2041, reflecting a total gain of 2.6% over 17 years.

Residential development activity is lower than average in Normanhurst - Thornleigh - Westleigh according to AreaSearch's national comparison of local real estate markets

Normanhurst - Thornleigh - Westleigh has recorded approximately 45 residential properties granted approval annually. Over the past five financial years, from FY-21 to FY-25, a total of 226 homes have been approved, with an additional 8 approved in FY-26 so far. On average, each dwelling has accommodated 2.1 new residents per year over these five financial years, indicating strong demand which supports property values.

The average construction cost value for new homes is $362,000. This fiscal year has seen $14.2 million in commercial approvals, suggesting balanced commercial development activity. Compared to Greater Sydney, Normanhurst - Thornleigh - Westleigh shows 16.0% lower construction activity per person. Nationally, it ranks at the 22nd percentile of areas assessed, indicating more limited choices for buyers and supporting demand for existing homes.

Recent construction comprises 90.0% standalone homes and 10.0% townhouses or apartments, maintaining the area's suburban identity with a concentration of family homes suitable for buyers seeking space. The location has approximately 722 people per dwelling approval, reflecting an established market. According to AreaSearch's latest quarterly estimate, Normanhurst - Thornleigh - Westleigh is expected to grow by 528 residents by 2041. At current development rates, new housing supply should comfortably meet demand, providing favorable conditions for buyers and potentially supporting growth beyond current population projections.

Normanhurst - Thornleigh - Westleigh has very high levels of nearby infrastructure activity, ranking in the top 10% nationally

Infrastructure changes significantly influence an area's performance. AreaSearch identified 24 projects expected to impact the region. Notable initiatives include Thornleigh Quarter, Thornleigh Marketplace Redevelopment, 15-19 Station Street Mixed-Use Development Thornleigh, and Hornsby Park. The following list details those most relevant.

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

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Normanhurst - Thornleigh - Westleigh shows employment indicators that trail behind approximately 70% of regions assessed across Australia

Normanhurst-Thornleigh-Westleigh has a highly educated workforce with notable representation in the technology sector. Its unemployment rate is 6.4%. As of September 2025, there are 10,149 employed residents, with an unemployment rate of 8.4% compared to Greater Sydney's 4.2%.

Workforce participation stands at 67.7%, slightly below Greater Sydney's 70.0%. A high proportion (57.5%) work from home, potentially influenced by Covid-19 lockdowns. Key employment sectors are health care & social assistance, professional & technical services, and education & training, with the latter particularly concentrated at 1.6 times the regional average. Conversely, transport, postal & warehousing has lower representation at 2.8% compared to the regional average of 5.3%.

Between September 2024 and September 2025, labour force levels increased by 0.5%, while employment declined by 0.7%, leading to a rise in unemployment of 1.1 percentage points. In contrast, Greater Sydney saw employment grow by 2.1% over the same period. Jobs and Skills Australia's national employment forecasts from May-25 project overall growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Normanhurst-Thornleigh-Westleigh's employment mix suggests local employment should increase by 7.3% over five years and 14.7% over ten years, though this is a simplified extrapolation for illustrative purposes only.

The economic profile demonstrates exceptional strength, placing the area among the top 10% nationally based on comprehensive AreaSearch income analysis

According to AreaSearch's aggregation of the latest postcode level ATO data released for financial year ended 30 June 2023, Normanhurst - Thornleigh - Westleigh SA2 had a median income among taxpayers of $66,196 and an average income of $96,134. Nationally, this places it in the top percentile. In Greater Sydney, the median and average incomes were $60,817 and $83,003 respectively. Based on Wage Price Index growth of 8.86% from financial year ended 30 June 2023 to September 2025, estimated median and average incomes would be approximately $72,061 and $104,651 respectively. From the Census conducted in August 2021, household incomes ranked at the 94th percentile with a weekly income of $2,781. Income analysis showed that 32.2% of individuals earned over $4,000 per week (6,474 individuals), contrasting with the region where the leading bracket was $1,500 - $2,999 at 30.9%. The district exhibited significant affluence with 47.0% earning over $3,000 per week, supporting premium retail and service offerings. Housing accounted for 14.9% of income. Strong earnings placed residents within the 94th percentile for disposable income. The area's SEIFA income ranking was in the 9th decile.

Normanhurst - Thornleigh - Westleigh is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership

In Normanhurst-Thornleigh-Westleigh, as per the latest Census evaluation, 82.9% of dwellings were houses, with the remaining 17.2% comprising semi-detached homes, apartments, and other types. This contrasts with Sydney's metropolitan area, where 55.9% of dwellings are houses and 44.1% are other types. Home ownership in Normanhurst-Thornleigh-Westleigh stood at 36.4%, with mortgaged properties at 45.4% and rented dwellings at 18.2%. The median monthly mortgage repayment was $3,000, higher than Sydney's average of $2,427. Weekly rent in the area averaged $550, compared to Sydney's $470. Nationally, Normanhurst-Thornleigh-Westleigh's mortgage repayments were significantly higher than the Australian average of $1,863, and rents were substantially above the national figure of $375.

Normanhurst - Thornleigh - Westleigh features high concentrations of family households, with a higher-than-average median household size

Family households constitute 82.7% of all households, composed of 48.7% couples with children, 23.9% couples without children, and 9.6% single parent families. Non-family households comprise the remaining 17.3%, with lone person households at 15.6% and group households making up 1.6%. The median household size is 2.9 people, larger than the Greater Sydney average of 2.7.

Normanhurst - Thornleigh - Westleigh demonstrates exceptional educational outcomes, ranking among the top 5% of areas nationally based on AreaSearch's comprehensive analysis of qualification and performance metrics

Normanhurst-Thornleigh-Westleigh has higher educational attainment than national averages. Among residents aged 15+, 49.4% have university qualifications, compared to 30.4% nationally and 32.2% in NSW. Bachelor degrees are the most common at 30.2%, followed by postgraduate qualifications (15.2%) and graduate diplomas (4.0%). Vocational pathways account for 23.7%, with advanced diplomas at 11.1% and certificates at 12.6%.

Educational participation is high, with 32.3% currently enrolled in formal education. This includes 11.1% in primary, 9.4% in secondary, and 6.5% in tertiary education.

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

Public transport analysis reveals 175 active transport stops operating within Normanhurst-Thornleigh-Westleigh. These comprise a mix of train and bus services. There are 52 individual routes serving these stops, collectively providing 3,921 weekly passenger trips. Transport accessibility is rated as excellent, with residents typically located 155 meters from the nearest transport stop. As a primarily residential area, most residents commute outward. Car remains the dominant mode of transportation at 80%, with train use at 12%.

Vehicle ownership averages 1.4 per dwelling, above the regional average. A high 57.5% of residents work from home (2021 Census; may reflect COVID-19 conditions). Service frequency averages 560 trips per day across all routes, equating to approximately 22 weekly trips per individual stop. The map shows the 100 nearest stops to the location centrepoint.

Normanhurst - Thornleigh - Westleigh's residents are extremely healthy with very low prevalence of common health conditions across all age groups

Analysis shows robust health metrics across Normanhurst-Thornleigh-Westleigh. Mortality rates and chronic condition prevalence were very low across all age groups. Private health cover was exceptionally high at 69% of the total population (13,812 people), compared to 59.9% in Greater Sydney and a national average of 55.7%.

Asthma and mental health issues were most common, affecting 7.0% and 6.7% respectively. 72.2% reported no medical ailments, compared to 74.6% in Greater Sydney. Working-age residents had low chronic condition prevalence. The area had 18.5% of residents aged 65 and over (3,719 people), higher than Greater Sydney's 15.4%. Health outcomes among seniors were strong, aligning with national rankings for the general population.

Normanhurst - Thornleigh - Westleigh was found to be more culturally diverse than the vast majority of local markets in Australia, upon assessment of a range of language and cultural background related metrics

Normanhurst-Thornleigh-Westleigh has a high level of cultural diversity, with 29.3% speaking a language other than English at home and 35.8% born overseas. Christianity is the predominant religion in Normanhurst-Thornleigh-Westleigh, comprising 52.9%. Hinduism is overrepresented compared to Greater Sydney, making up 4.2% of the population.

The top three ancestry groups are English (22.9%), Australian (21.2%), and Chinese (10.0%). Korean (1.8%) and South African (0.8%) are notably overrepresented compared to regional averages.

Normanhurst - Thornleigh - Westleigh's population is slightly older than the national pattern

Normanhurst - Thornleigh - Westleigh's median age is 41 years, which is significantly higher than Greater Sydney's average of 37 years and somewhat older than Australia's median age of 38 years. Compared to Greater Sydney, the 45-54 age cohort is notably over-represented in Normanhurst - Thornleigh - Westleigh at 15.4%, while the 25-34 age group is under-represented at 6.6%. According to the 2021 Census, the 15-24 age group has grown from 12.6% to 14.7% of the population, whereas the 25-34 cohort has declined from 7.6% to 6.6%. Demographic modeling indicates that Normanhurst - Thornleigh - Westleigh's age profile will significantly change by 2041. The 85+ age group is projected to grow by 88%, adding 480 residents, reaching a total of 1,023. Residents aged 65 and older represent 96% of the anticipated population growth. Conversely, population declines are projected for the 45-54 and 25-34 age cohorts.