Blackheath (NSW)

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According to census figures and subsequent residential updates processed by Districts, the suburb of Blackheath has an estimated resident count of 4,683 as of May 2026. This represents a minor expansion of 11 people (0.2%) from the 4,672 individuals documented during the 2021 Census. This adjustment stems from an intermediate estimate of 4,676 residents calculated after reviewing June 2025 ABS records, combined with 37 validated new addresses registered since the census. The local density stands at 147 persons per square kilometer, indicating low-density living and potential capacity for future growth. Over the last ten years, the suburb of Blackheath has shown stable population trends with a 0.2% compound annual growth rate, exceeding the wider SA3 territory. Net migration from abroad served as the primary source of demographic gains, functioning as the sole driver of population growth recently.

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Data indicates the suburb of Blackheath has an unemployment rate of only 3.9% alongside a highly qualified labor force with strong representation in professional roles. As of March 2026, there are 2,185 employed local residents, and the jobless rate sits 0.2% below the Greater Sydney level of 4.1%. However, workforce participation is low, standing at 55.1% compared to 69.1% across Greater Sydney. Census data indicates that a high proportion of employed residents (44.0%) worked from home, though this may reflect temporary pandemic restrictions.

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According to tax statistics from the financial year 2023, the suburb of Blackheath has income levels that sit below the national average. Taxpayers in the suburb of Blackheath recorded a median income of $44,184 and an average income of $61,947, compared to Greater Sydney averages of $60,817 and $83,003 respectively. Factoring in Wage Price Index growth of 10.32% since the financial year 2023, current estimated figures would be approximately $48,744 for median income and $68,340 for average income as of March 2026. In the 2021 Census, local household, family, and individual incomes ranked modestly, falling between the 22nd and 37th percentiles. The largest local earning segment comprises 28.9% of residents receiving $1,500 - 2,999 weekly (1,353 residents), matching the wider metropolitan trend where this bracket represents . High housing costs leave residents with only of their income, ranking in the th percentile, while the local SEIFA income score falls in the th decile.

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At the time of the latest census, the residential landscape in the suburb of Blackheath consisted of 96.0% standalone houses and 3.9% other dwelling types like townhouses and apartments, compared to Sydney metro where houses account for 55.9% and alternative dwellings represent 44.1%. Home ownership rates are high, with 48.4% of homes owned outright, while the remaining properties are mortgaged (30.5%) or rented (21.1%). The median monthly mortgage payment was $1,733, which is below the Sydney metro average of $2,427. The median weekly rent was $380, compared to $470 in the metropolitan area. Nationally, local mortgage costs are below the Australian average of $1,863, whereas rental costs exceed the national average of $375.

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Families make up 61.4% of all households, consisting of couples with children (18.0%), couples without children (31.2%), and single parents (11.3%). The remaining 38.6% are non-family households, which are mostly single-person households (35.9%) alongside group households at 2.8%. The median household size of 2.0 people is lower than the Greater Sydney average of 2.7.

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The level of educational achievement in the suburb of Blackheath is high, with 41.4% of residents aged 15+ holding a university degree, compared to 23.9% across the SA4 region and 30.4% nationally. This educational profile positions the local workforce well for knowledge-based jobs. Bachelor degrees represent 24.7% of qualifications, followed by postgraduate degrees at 12.6% and graduate diplomas at 4.1%. Vocational qualifications are also common, with 33.1% of residents aged 15+ holding credentials, including advanced diplomas (13.2%) and vocational certificates (19.9%).

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The public transport network in the suburb of Blackheath consists of 89 active train and bus stops. These stops are served by 16 unique routes that facilitate 1,056 passenger journeys each week. Local access is good, with residents living an average of 225 meters from their nearest transit stop. Given the residential nature of the suburb, most workers commute out of the area. Private vehicles are the main mode of travel at 86%, while 5% of residents walk to work. Vehicle ownership averages 1.0 per household, which is below the regional average. A high proportion of residents (44.0%) work from home according to the 2021 Census, which may reflect pandemic-era conditions.

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Health indicators for the suburb of Blackheath are favorable, with mortality rates and illness trends matching national benchmarks. The incidence of common medical conditions is typical across age groups. Approximately 51% of the population (~2,409 people) have private health insurance, which is lower than the 59.9% rate observed across Greater Sydney.

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Cultural diversity in the suburb of Blackheath is close to the regional average, with 77.5% of residents born in Australia, 88.3% holding citizenship, and 92.9% speaking only English at home. Christianity is the primary religion, followed by 37.6% of the population. The most prominent religious overrepresentation is Judaism, which accounts for 0.6% of residents compared to 0.8% across Greater Sydney.

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The median age of 53 years in the suburb of Blackheath is higher than the Greater Sydney average of 37 and the national average of 38. Residents aged 65 - 74 years are highly represented at 17.2% of the population, compared to a national average of 9.4%, while the 25 - 34 age group is small at 7.1%. Since 2021, the 75 to 84 age cohort grew from 9.7% to 12.7% and the 15 to 24 group rose from 6.2% to 7.3%. Conversely, the 5 to 14 cohort decreased from 10.5% to 9.2% and the to group fell from to . Significant demographic shifts are expected by with the + cohort projected to rise by ( people) to reach from . Residents aged and over will account for of the projected population growth, while declines are anticipated in the to and to age brackets.

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Blackheath currently has an estimated 173 children under 5 years old, comprising approximately 106 children aged 0-2 and 71 children aged 3-4. This cohort grew by an estimated 20% since the previous census. though population forecasts indicate future decline, with an anticipated decrease of 14% by 2041 (to approximately 148 children). Meanwhile the 5-12 cohort currently amounts to 327. While growth has been positive birth rates observed in the area have been low, with approximately 5.8 births per 1,000 residents recorded over the latest two-year period analysed which ranks the area among the bottom 20% of areas assessed nationally. This rate has slowed down slightly in recent years however.