Blackheath

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

The population of Blackheath is estimated at around 4,683 as of May 2026. This reflects an increase since the 2021 Census which reported a population of 4,672 people. The change was inferred from AreaSearch's estimation of the resident population at 4,676 following examination of the latest ERP data release by the ABS in June 2025, and an additional 37 validated new addresses since the Census date. This level of population equates to a density ratio of 147 persons per square kilometer. Over the past decade, Blackheath has demonstrated resilient growth patterns with a compound annual growth rate of 0.2%, outpacing the SA3 area. Population growth for the suburb was primarily driven by overseas migration 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 from these aggregations are applied to all areas for years 2032 to 2041. Looking at population projections moving forward, lower quartile growth of national statistical areas is anticipated, with the suburb expected to grow by 27 persons to 2041 based on aggregated SA2-level projections, reflecting an increase of 0.4% in total over the 16 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, allocated 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 FY-26, 10 approvals have been recorded. Over these five years, an average of 0.5 new residents per year per dwelling constructed was observed between FY-21 and FY-25. This suggests that the supply of new dwellings has kept pace with or exceeded demand, providing ample buyer choice and creating capacity for population growth beyond current forecasts.

The average expected construction cost value of these new dwellings is $721,000, indicating a focus on the premium segment with upmarket properties. Additionally, there have been $1.0 million in commercial approvals this financial year, reflecting the area's residential nature. When compared to Greater Sydney, Blackheath records somewhat elevated construction activity, at 45.0% above the regional average per person over the five-year period. This preserves reasonable buyer options while sustaining existing property demand.

However, development activity has moderated in recent periods, and this is also 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 492 people per dwelling approval reflects its quiet, low activity development environment. Future projections show Blackheath adding approximately 20 residents by 2041, according to the latest AreaSearch quarterly estimate. 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 46thth percentile nationally

The performance of an area can significantly be influenced by changes in local infrastructure projects and planning initiatives. A single project has been identified by AreaSearch as potentially impacting this area. Notable projects include Great Western Highway Upgrade - Katoomba to Lithgow, Regional NSW Road Network Safety Improvements, Paling Yards Wind Farm, and Low and Mid-Rise Housing Policy. The following details those likely to be most relevant:.

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Despite maintaining a low unemployment rate of 3.9%, Blackheath has experienced recent job losses, resulting in a below average employment performance ranking when compared nationally

Blackheath's workforce is highly educated with strong representation in professional services. The unemployment rate stands at 3.9%, as per AreaSearch aggregation of statistical area data. As of December 2025, 2,161 residents are employed, with an unemployment rate of 0.3% lower than Greater Sydney's rate of 4.2%.

Workforce participation in Blackheath is at 54.5%, compared to Greater Sydney's 68.8%. A high proportion of residents, 44.0%, work from home. Leading employment industries include health care & social assistance, education & training, and professional & technical services. Notably, education & training has a concentration 1.5 times the regional average.

Conversely, finance & insurance shows lower representation at 2.7% versus the regional average of 7.3%. The area may offer limited local employment opportunities, as indicated by Census data comparing working population to resident population. Between December 2024 and December 2025, Blackheath's labour force decreased by 4.8%, with employment declining by 4.3%, leading to a fall in unemployment rate of 0.6 percentage points. In contrast, Greater Sydney saw employment growth of 2.2% and labour force growth of 2.3%. Jobs and Skills Australia forecasts national employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Blackheath's employment mix suggests local employment should increase by 7.0% over five years and 14.4% over ten years, though this is a simple extrapolation for illustrative purposes only.

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

The suburb of Blackheath had an income level below the national average according to ATO data aggregated by AreaSearch for financial year 2023. The median income among taxpayers in Blackheath was $44,184 and the average income stood at $61,947, compared to Greater Sydney's figures of $60,817 and $83,003 respectively. Based on Wage Price Index growth of 10.32% since financial year 2023, current estimates would be approximately $48,744 (median) and $68,340 (average) as of March 2026. According to the 2021 Census figures, household, family and personal incomes in Blackheath ranked modestly, between the 22nd and 37th percentiles. The data showed that the largest segment comprised 28.9% earning $1,500 - 2,999 weekly (1,353 residents), aligning with the metropolitan region where this cohort likewise represented 30.9%. Housing affordability pressures were severe, with only 84.8% of income remaining, ranking at the 24th percentile. The area'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 the remaining 3.9% being semi-detached, apartments, or other types. This contrasts with Sydney metro's 55.9% houses and 44.1% other dwellings. Home ownership in Blackheath stood at 48.4%, with mortgaged properties at 30.5% and rented ones at 21.1%. The median monthly mortgage repayment was $1,733, lower than Sydney metro's average of $2,427. The median weekly rent in Blackheath was $380, compared to Sydney metro'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 constitute 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 comprise the remaining 38.6%, with lone person households at 35.9% and group households making up 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 years and over holding university qualifications as of the latest data. This compares to 23.9% in the broader SA4 region and 30.4% nationally. Bachelor degrees are most common at 24.7%, followed by postgraduate qualifications (12.6%) and graduate diplomas (4.1%). Vocational credentials are also prevalent, with 33.1% of residents aged 15 years and over holding such qualifications, including advanced diplomas (13.2%) and certificates (19.9%).

Educational participation is high, with 25.5% of residents currently enrolled in formal education, comprising 8.6% in primary, 6.8% in secondary, and 4.2% in 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 covered by 16 routes serving 1,056 weekly passenger trips in total. Transport accessibility is good with residents typically living 225 meters from the nearest stop. Most residents commute outward daily, with car being the primary mode at 86%. Five percent walk to work. Vehicle ownership averages one per dwelling, below the regional average.

According to the 2021 Census, 44% of residents work from home, which may reflect COVID-19 conditions. Service frequency averages 150 trips daily across all routes, equating to about 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 shows positive outcomes for Blackheath residents. Mortality rates and health conditions align with national benchmarks.

Common health conditions are seen across both young and old age groups. Private health cover is relatively low at 51% of the total population (~2,409 people), compared to 59.9% in Greater Sydney. The most common medical conditions are arthritis and mental health issues, impacting 10.4% and 9.6% of residents respectively. 60.2% of residents report no medical ailments, compared to 74.6% across Greater Sydney. Working-age population faces notable health challenges with elevated chronic condition rates. The area has 32.7% of residents aged 65 and over (1,531 people), higher than the 15.5% in Greater Sydney. Health outcomes among seniors are strong, ranking even higher than the general population nationally.

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 the wider region, with 77.5% born in Australia, 88.3% being citizens, and 92.9% speaking English only at home. Christianity is the predominant religion at 37.6%. Judaism is overrepresented at 0.6%, compared to Greater Sydney's 0.8%.

Top ancestry groups are English (30.6%), Australian (22.3%), and Irish (12.5%). Scottish (10.9%) and Hungarian (0.6%) are notably overrepresented, while Welsh (0.8%) is slightly higher than the regional average.

Blackheath ranks among the oldest 10% of areas nationwide

Blackheath's median age is 53 years, significantly higher than Greater Sydney's average of 37 years and exceeding the national average of 38 years. The age profile shows that those aged 65-74 are particularly prominent, making up 17.2% of the population, compared to 9.4% nationally. Meanwhile, the 25-34 age group comprises only 7.1%, lower than Greater Sydney's proportion. Between 2021 and present, the 75-84 age group has grown from 9.7% to 12.7%, while the 15-24 cohort increased from 6.2% to 7.3%. Conversely, the 5-14 age group declined from 10.5% to 9.2%, and the 55-64 group dropped from 18.2% to 17.0%. By 2041, Blackheath's population aged 85+ is projected to grow by 108 people, reaching 273 from 131. The aging population trend is evident, with those aged 65 and above contributing all of the projected growth. Conversely, declines are projected for the 0-4 and 25-34 age groups.