Balgowlah - Clontarf - Seaforth

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

Balgowlah-Clontarf-Seaforth's population was 20,732 as of the 2021 Census. By February 2026, it had increased to around 21,389, a rise of 657 people (3.2%). This growth is inferred from ABS data showing an estimated resident population of 20,884 in June 2024 and the addition of 65 validated new addresses since the Census date. The population density was 2,810 persons per square kilometer, placing it in the upper quartile nationally according to AreaSearch's assessment. Since the 2021 Census, Balgowlah-Clontarf-Seaforth's growth rate of 3.2% was close to the SA4 region's 3.5%, indicating strong fundamentals. Overseas migration contributed approximately 77.5% of overall population gains during recent periods.

AreaSearch uses ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022. For areas not covered by this data, NSW State Government's SA2 level projections, released in 2022 using 2021 as the base year, are employed. Growth rates by age group from these aggregations are applied to all areas for years 2032 to 2041. By 2041, Balgowlah-Clontarf-Seaforth's population is projected to decline by 111 persons overall, but the 85 and over age group is expected to grow by 470 people.

Residential development activity is lower than average in Balgowlah - Clontarf - Seaforth according to AreaSearch's national comparison of local real estate markets

Balgowlah-Clontarf-Seaforth has recorded approximately 60 residential properties granted approval annually. Over the past five financial years, from FY21 to FY25304 homes were approved, with a further 36 approved in FY26 as of present. The area's population decline has been accompanied by adequate development activity relative to its size, which is beneficial for buyers.

New homes are being built at an average construction cost value of $792,000, indicating that developers are targeting the premium market with high-end developments. This financial year alone, $18.6 million in commercial approvals have been registered, suggesting balanced commercial development activity. Compared to Greater Sydney, Balgowlah-Clontarf-Seaforth shows moderately higher construction activity, 23.0% above the regional average per person over the five-year period, providing good buyer choice while supporting existing property values. However, this activity is lower than the national average, reflecting market maturity and potential development constraints.

Recent construction comprises 51.0% standalone homes and 49.0% attached dwellings, offering a mix of medium-density options across various price brackets. The area has approximately 381 people per dwelling approval, indicating an established area with stable or declining population projections, which should reduce housing demand pressures and benefit potential buyers.

Balgowlah - Clontarf - Seaforth has strong levels of nearby infrastructure activity, ranking in the top 40% nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch has identified 14 projects likely affecting the region. Notable ones are Stockland Balgowlah Shopping Centre Expansion & Residential, Totem Road Precinct - Balgowlah Heights, Seaforth Village Masterplan & Redevelopment, and Seaforth Public School Expansion & Modernisation. The following list details those most relevant.

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

Denotes AI-based impression for illustrative purposes only, not to be taken as definitive under any circumstances. Please follow links and conduct other investigations from the project's source for actual imagery. Developers and project owners wishing us to use original imagery please Contact Us and we will do so.

While Balgowlah - Clontarf - Seaforth retains a healthy unemployment rate of 3.7%, recent employment declines have impacted its national performance ranking

Balgowlah-Clontarf-Seaforth has a highly educated workforce with a notable technology sector presence. Its unemployment rate in September 2025 was 3.7%. At this time, 11,178 residents were employed, with an unemployment rate of 4.2% compared to Greater Sydney's 4.6%, and workforce participation at 70.0%.

According to Census data, 62.7% of residents worked from home. Dominant employment sectors include professional & technical, finance & insurance, and health care & social assistance. The area has a particularly high concentration in professional & technical services with levels at 1.7 times the regional average, while health care & social assistance shows lower representation at 11.0%. Over the year to September 2025, labour force levels decreased by 0.6% and employment declined by 2.3%, causing unemployment to rise by 1.7 percentage points.

In contrast, Greater Sydney experienced employment growth of 2.1% and labour force growth of 2.4%. National employment forecasts from Jobs and Skills Australia project growth in Balgowlah-Clontarf-Seaforth's employment mix at 7.4% over five years and 14.7% over ten years.

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 ending June 2023, the Balgowlah - Clontarf - Seaforth SA2 had a median income among taxpayers of $75,428. The average income level stood at $149,660. This places it in the top percentile nationally, compared to levels of $60,817 and $83,030 across Greater Sydney respectively. Based on Wage Price Index growth of 8.86% from financial year ending June 2023 to September 2025, current estimates would be approximately $82,111 for median income and $162,920 for average income. According to the Census conducted in August 2021, household, family and personal incomes all rank highly in Balgowlah - Clontarf - Seaforth, between the 94th and 99th percentiles nationally. In terms of income distribution, 44.7% of the population (9,560 individuals) fall within the $4000+ income range, unlike trends in the region where 30.9% fall within the $1,500 - 2,999 range. The locality demonstrates considerable affluence with 55.4% earning over $3,000 per week, supporting premium retail and service offerings. Housing accounts for 14.9% of income while strong earnings rank residents within the 98th percentile for disposable income. The area's SEIFA income ranking places it in the 10th decile.

Balgowlah - Clontarf - Seaforth displays a diverse mix of dwelling types, with above-average rates of outright home ownership

Balgowlah-Clontarf-Seaforth's dwelling structure, as per the latest Census evaluation, consisted of 65.4% houses and 34.6% other dwellings (semi-detached, apartments, 'other' dwellings). This compares to Sydney metro's 55.9% houses and 44.1% other dwellings. Home ownership in Balgowlah-Clontarf-Seaforth stood at 39.9%, with the rest being mortgaged (38.7%) or rented (21.4%). The median monthly mortgage repayment in the area was $4,000, higher than Sydney metro's average of $2,427. The median weekly rent figure was recorded at $697, compared to Sydney metro's $470. Nationally, Balgowlah-Clontarf-Seaforth's mortgage repayments were significantly higher than the Australian average of $1,863, while rents were substantially above the national figure of $375.

Balgowlah - Clontarf - Seaforth features high concentrations of family households, with a higher-than-average median household size

Family households account for 80.0% of all households, including 45.8% couples with children, 24.8% couples without children, and 8.6% single parent families. Non-family households constitute the remaining 20.0%, with lone person households at 17.4% and group households comprising 2.6%. The median household size is 2.9 people, which is larger than the Greater Sydney average of 2.7.

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

Balgowlah - Clontarf - Seaforth has a significantly higher educational attainment than broader benchmarks. Among residents aged 15+, 51.9% hold university qualifications, compared to 30.4% in Australia and 32.2% in NSW. Bachelor degrees are the most common at 35.1%, followed by postgraduate qualifications (13.3%) and graduate diplomas (3.5%). Vocational pathways account for 22.0% of qualifications among those aged 15+, with advanced diplomas making up 11.2% and certificates 10.8%.

Educational participation is notably high, with 33.2% of residents currently enrolled in formal education. This includes 11.3% in primary education, 10.4% in secondary education, and 6.0% pursuing tertiary education.

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

The analysis of public transport in Balgowlah - Clontarf - Seaforth reveals there are 208 active transport stops operating within the area. These stops are serviced by 73 individual routes, collectively providing 4,466 weekly passenger trips. Transport accessibility is rated as excellent, with residents typically located 127 meters from the nearest transport stop. As a primarily residential area, most residents commute outward. The dominant mode of transport for commuting is car at 79%, with 9% by bus and 5% walking. Vehicle ownership averages 1.4 per dwelling, which is above the regional average.

According to the 2021 Census, a high proportion of residents work from home, at 62.7%. This figure may reflect COVID-19 conditions. Service frequency averages 638 trips per day across all routes, equating to approximately 21 weekly trips per individual stop. The accompanying map shows the 100 nearest stops to the location centrepoint.

Balgowlah - Clontarf - Seaforth's residents boast exceedingly positive health performance metrics with very low prevalence of common health conditions across all age groups

Balgowlah-Clontarf-Seaforth demonstrates favourable health outcomes based on AreaSearch's assessment of mortality rates and chronic condition prevalence, with low prevalence across all age groups. Private health cover is high at approximately 85% (18,159 people), compared to Greater Sydney's 59.9% and the national average of 55.7%. Common medical conditions include asthma (6.2%) and arthritis (5.4%), with 77.5% reporting no medical ailments, higher than Greater Sydney's 74.6%.

The area has 17.1% residents aged 65 and over (3,655 people), above Greater Sydney's 15.4%. Health outcomes among seniors are strong, aligning with national rankings for the general population.

The level of cultural diversity witnessed in Balgowlah - Clontarf - Seaforth was found to be above average when compared nationally for a number of language and cultural background related metrics

Balgowlah-Clontarf-Seaforth, as of the Census conducted on 27 June 2016, had a higher cultural diversity than most local areas. Here, 14.3% spoke languages other than English at home and 32.9% were born overseas. Christianity was the dominant religion, comprising 51.5%.

Judaism, however, was more prevalent here at 0.4%, compared to Greater Sydney's 0.8%. Regarding ancestry, the top groups were English (30.5%), Australian (21.0%), and Irish (9.8%). Notably, French (1.1%) South African (1.3%) and Welsh (0.9%) ethnicities were overrepresented compared to regional averages of 0.5%, 0.5% and 0.4% respectively.

Balgowlah - Clontarf - Seaforth's median age exceeds the national pattern

The median age in Balgowlah-Clontarf-Seaforth is 42 years, which is significantly higher than Greater Sydney's average of 37 years and Australia's average of 38 years. The 45-54 age group comprises 16.6% of the population, compared to Greater Sydney, while the 25-34 age group makes up 6.8%. According to post-2021 Census data, the 15 to 24 age group has increased from 12.3% to 15.0%, and the 55 to 64 cohort has risen from 12.9% to 14.0%. Conversely, the 35 to 44 age group has decreased from 12.7% to 11.1%, and the 5 to 14 age group has fallen from 16.1% to 15.0%. Population forecasts for 2041 indicate substantial demographic changes in Balgowlah-Clontarf-Seaforth, with the 85+ age group expected to grow by 76%, reaching 960 people from 545. Notably, all population growth will be accounted for by the combined 65+ age groups, reflecting the area's aging demographic profile. Conversely, the 25 to 34 and 55 to 64 cohorts are expected to experience population declines.