Blackheath

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

The estimated population of the suburb of Blackheath is around 4,716 as of Feb 2026. This figure reflects an increase of 44 people since the 2021 Census, which reported a population of 4,672. The change was inferred from AreaSearch's estimated resident population of 4,686 in June 2024 and 31 validated new addresses since the Census date. This results in a population density ratio of 148 persons per square kilometer. Over the past decade, Blackheath has shown resilient growth patterns with a compound annual growth rate of 0.2%, outpacing its SA3 area. Overseas migration was the primary driver of population growth during recent periods.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area released in 2024 with 2022 as the base year, and NSW State Government's SA2 level projections for areas not covered by this data, released in 2022 with 2021 as the base year. Growth rates by age group are applied to all areas from these aggregations for years 2032 to 2041. According to population projections, lower quartile growth is anticipated, with Blackheath expected to grow by 55 persons to 2041, reflecting an increase of 0.5% in total over the 17 years.

AreaSearch assessment of residential development drivers sees a low level of activity in Blackheath, placing the area among the bottom 25% of areas assessed nationally

Based on AreaSearch analysis of ABS building approval numbers from statistical area data, Blackheath averaged approximately 13 new dwelling approvals annually over the past five financial years, totalling an estimated 68 homes. As of FY26, six approvals have been recorded. Between FY21 and FY25, there was an average of 0.7 new residents per year per dwelling constructed, indicating that new supply has kept pace with or exceeded demand, offering ample buyer choice and creating capacity for population growth beyond current forecasts. The average expected construction cost value of new dwellings in Blackheath is $721,000, demonstrating a focus on the premium segment with upmarket properties.

This financial year, there have been $1.0 million in commercial approvals, reflecting the area's residential nature. When compared to Greater Sydney, Blackheath records somewhat elevated construction activity, with 45.0% above the regional average per person over the five-year period. This preserves reasonable buyer options while sustaining existing property demand, although development activity has moderated in recent periods. However, this is below the national average, reflecting the area's maturity and potentially indicating planning constraints.

New development in Blackheath consists of 89.0% detached houses and 11.0% attached dwellings, preserving the area's low density nature and attracting space-seeking buyers. The estimated count of 495 people per dwelling approval reflects its quiet, low activity development environment. According to AreaSearch's latest quarterly estimate, Blackheath is projected to add 25 residents by 2041. With current construction levels, housing supply should adequately meet demand, creating favourable conditions for buyers while potentially enabling growth that exceeds current forecasts.

Blackheath has moderate levels of nearby infrastructure activity, ranking in the 49thth percentile nationally

Changes to local infrastructure significantly influence an area's performance. AreaSearch has identified one major project expected to impact the region: Great Western Highway Upgrade - Katoomba to Lithgow, commenced 15th March 2021 and scheduled for completion in late 2023. Other notable projects include Regional NSW Road Network Safety Improvements, initiated 5th July 2019 with no specified end date; Paling Yards Wind Farm, started 1st January 2020 and expected to finish by December 2022; and Low and Mid-Rise Housing Policy, introduced on 1st April 2021.

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Despite maintaining a low unemployment rate of 3.8%, Blackheath has experienced recent job losses, resulting in a below average employment performance ranking when compared nationally

Blackheath has a highly educated workforce with professional services well represented. The unemployment rate was 3.8% as per AreaSearch's aggregation of statistical area data. By December 2025, 2,213 residents were employed, with an unemployment rate of 0.3% below Greater Sydney's rate of 4.2%.

Workforce participation in Blackheath was 55.1%, significantly lower than Greater Sydney's 70.2%. Census responses indicated that 44.0% of residents worked from home. Leading employment industries were health care & social assistance, education & training, and professional & technical services. Notably, education & training had employment levels at 1.5 times the regional average.

Conversely, finance & insurance showed lower representation at 2.7% compared to the regional average of 7.3%. The area appeared to offer limited local employment opportunities, as seen in the count of Census working population versus resident population. AreaSearch analysis of SALM and ABS data from broader statistical areas showed that during the year to December 2025, Blackheath's labour force decreased by 4.5%, with employment declining by 3.8%, causing a fall in unemployment rate by 0.7 percentage points. In contrast, Greater Sydney recorded employment growth of 2.2% and labour force growth of 2.3%, with marginal unemployment increase. Jobs and Skills Australia's national employment forecasts from May-25 offered insights into potential future demand within Blackheath. These projections estimated that national employment would expand by 6.6% over five years and 13.7% over ten years, but growth rates differed significantly between industry sectors. Applying these industry-specific projections to Blackheath's employment mix suggested local employment should increase by 7.0% over five years and 14.4% over ten years.

The area's income levels rank in the lower 15% nationally based on AreaSearch comparative data

The suburb of Blackheath had a median income among taxpayers of $44,184 and an average income of $61,947 in the financial year 2023, according to ATO data aggregated by AreaSearch. These figures compared to Greater Sydney's median income of $60,817 and average income of $83,003 respectively. By September 2025, current estimates suggest Blackheath's median income would be approximately $48,099 and the average income $67,436, based on Wage Price Index growth of 8.86%. The 2021 Census figures indicate that household, family, and personal incomes in Blackheath ranked modestly, between the 22nd and 37th percentiles. The largest segment of income earners in Blackheath comprised 28.9% earning $1,500 - $2,999 weekly (1,362 residents), similar to the metropolitan region where this cohort also represented 30.9%. Housing affordability pressures were severe in Blackheath, with only 84.8% of income remaining after housing costs, ranking at the 24th percentile. The suburb's SEIFA income ranking placed it in the 6th decile.

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

In Blackheath, as per the latest Census evaluation, 96.0% of dwellings were houses, with 3.9% being other types such as semi-detached homes and apartments. This contrasts with Sydney metropolitan areas which had 55.9% houses and 44.1% other dwellings. Home ownership in Blackheath stood at 48.4%, with mortgaged dwellings at 30.5% and rented ones at 21.1%. The median monthly mortgage repayment was $1,733, lower than Sydney's average of $2,427. Weekly rent median was $380 compared to Sydney's $470. Nationally, Blackheath's mortgage repayments were below the Australian average of $1,863, while rents exceeded the national figure of $375.

Blackheath features high concentrations of lone person households, with a lower-than-average median household size

Family households account for 61.4% of all households, including 18.0% couples with children, 31.2% couples without children, and 11.3% single parent families. Non-family households constitute the remaining 38.6%, with lone person households at 35.9% and group households comprising 2.8%. The median household size is 2.0 people, which is smaller than the Greater Sydney average of 2.7.

Blackheath shows strong educational performance, ranking in the upper quartile nationally when assessed across multiple qualification and achievement indicators

Educational attainment in Blackheath is notably high, with 41.4% of residents aged 15 and above holding university qualifications as of the latest data point. This compares to 23.9% in the SA4 region and 30.4% nationally. Bachelor degrees are most common at 24.7%, followed by postgraduate qualifications at 12.6% and graduate diplomas at 4.1%. Vocational credentials are also prevalent, with 33.1% of residents aged 15 and above holding such qualifications – advanced diplomas account for 13.2% and certificates for 19.9%.

Educational participation is high, with 25.5% of residents currently enrolled in formal education. This includes 8.6% in primary education, 6.8% in secondary education, and 4.2% pursuing tertiary education.

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

Blackheath has 89 active public transport stops, offering a mix of train and bus services. These are served by 16 routes, providing a total of 1,056 weekly passenger trips. Transport accessibility is rated as good, with residents located an average of 225 meters from the nearest stop. The area, being primarily residential, sees most commuters traveling outward. Car remains the dominant mode of transport at 86%, with 5% walking. Vehicle ownership averages 1.0 per dwelling, below the regional average.

According to the 2021 Census, a high 44.0% of residents work from home, which may reflect COVID-19 conditions. Service frequency averages 150 trips per day across all routes, equating to approximately 11 weekly trips per individual stop.

Blackheath's residents are healthier than average in comparison to broader Australia with a fairly standard level of common health conditions seen across both young and old age cohorts

Health data for Blackheath shows positive outcomes overall. Mortality rates and health conditions are largely comparable to national benchmarks.

Common health conditions are seen across all age groups, with arthritis and mental health issues affecting 10.4% and 9.6% of residents respectively. Around 51% (~2,426 people) have private health cover, compared to 59.9% in Greater Sydney. About 60.2% declare no medical ailments, lower than the 74.6% across Greater Sydney. Working-age residents face higher chronic condition rates. Blackheath has a larger senior population (33.1%, or 1,560 people) compared to Greater Sydney's 15.4%. Health outcomes among seniors rank favourably against national averages.

In terms of cultural diversity, Blackheath records figures broadly comparable to the national average, as found in AreaSearch's assessment of a number of language and cultural background related metrics

Blackheath's cultural diversity aligns with its broader region, with 77.5% born in Australia, 88.3% being citizens, and 92.9% speaking English only at home. Christianity dominates Blackheath's religious landscape at 37.6%. Judaism is slightly overrepresented, comprising 0.6%, compared to Greater Sydney's 0.8%.

In ancestry, the top groups are English (30.6%), Australian (22.3%), and Irish (12.5%). Notably, Scottish (10.9%) and Hungarian (0.6%) populations exceed regional averages of 4.8% and 0.3%, respectively, while Welsh (0.8%) is slightly higher than the region's 0.4%.

Blackheath ranks among the oldest 10% of areas nationwide

Blackheath's median age stands at 53 years, notably higher than Greater Sydney's average of 37 and exceeding the national average of 38 years. The age profile reveals that those aged 65-74 are particularly prevalent (17.1%), while the 25-34 group is comparatively smaller (6.9%) than in Greater Sydney. This concentration of 65-74 year-olds is significantly higher than the national average of 9.5%. Between 2021 and present, the 75 to 84 age group has increased from 9.7% to 13.4%, while the 15 to 24 cohort has risen from 6.2% to 7.5%. Conversely, the 5 to 14 cohort has decreased from 10.5% to 8.9%. By 2041, Blackheath's age composition is expected to shift significantly. The 85+ group will grow by 121%, reaching 271 people from a previous count of 122. This growth is projected solely due to the aging population dynamic, with those aged 65 and above comprising all of the projected growth. Conversely, population declines are forecast for the 0 to 4 and 25 to 34 age cohorts.