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 is around 21,382 as of Nov 2025. This reflects an increase of 650 people since the 2021 Census which reported a population of 20,732. The change was inferred from ABS estimated resident population of 20,884 in June 2024 and additional 52 validated new addresses since the Census date. This results in a density ratio of 2,809 persons per square kilometer, placing it in the upper quartile nationally according to AreaSearch's assessment. The area's 3.1% growth since census is within 0.3 percentage points of the SA4 region (3.4%), indicating competitive growth fundamentals. Overseas migration contributed approximately 77.5% of overall population gains recently.

AreaSearch uses ABS/Geoscience Australia projections for each SA2 area, released in 2024 with 2022 as base year. For areas not covered by this data, NSW State Government's SA2 level projections are used, released in 2022 with 2021 as base year. Growth rates by age group from these aggregations are applied to all areas for years 2032 to 2041. Projections indicate a decline in overall population by 111 persons by 2041, but growth is anticipated in specific age cohorts, notably the 85 and over age group projected 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 property approvals annually. Over the past five financial years, from FY21 to FY25304 homes were approved, with an additional 36 approved so far in FY26. Despite population decline, development activity has been adequate relative to other areas, benefiting buyers.

The average construction cost value of new homes is $792,000, indicating a focus on the premium market. This financial year, $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, at 23.0% above the regional average per person over the five-year period, maintaining good buyer choice and supporting existing property values. However, this activity is lower than the national average, reflecting market maturity and possible 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 location with stable or declining population projections, reducing housing demand pressures and benefiting 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 influencing the region. Notable initiatives include Stockland Balgowlah Shopping Centre Expansion & Residential, Totem Road Precinct - Balgowlah Heights, Seaforth Village Masterplan & Redevelopment, and Seaforth Public School Expansion & Modernisation. Below is a list of most relevant projects.

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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 notable representation in the technology sector. Its unemployment rate as of September 2025 is 3.7%, 0.4% lower than Greater Sydney's rate of 4.2%. There are 11,178 residents employed, with workforce participation similar to Greater Sydney's at 70.0%.

According to Census responses, 62.7% of residents work from home, potentially influenced by Covid-19 lockdowns. Dominant employment sectors include professional & technical (at 1.7 times the regional average), finance & insurance, and health care & social assistance (11.0%, below the regional average of 14.1%). The area offers limited local employment opportunities. Over the year to September 2025, labour force levels decreased by 0.6% and employment declined by 2.3%, raising unemployment by 1.7 percentage points.

In contrast, Greater Sydney saw employment growth of 2.1%. Jobs and Skills Australia forecasts national employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Balgowlah-Clontarf-Seaforth's employment mix suggests local employment could increase by 7.4% over five years and 14.7% over ten years, though this is a simple 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 2023, the median income among taxpayers in Balgowlah - Clontarf - Seaforth SA2 was $75,428. The average income stood at $149,660. This places it in the top percentile nationally compared to Greater Sydney's levels of $60,817 and $83,003 respectively. Based on Wage Price Index growth of 8.86% since financial year 2023, current estimates would be approximately $82,111 for median income and $162,920 for average income as of September 2025. According to the 2021 Census figures, household, family, and personal incomes in Balgowlah - Clontarf - Seaforth rank highly nationally, between the 94th and 99th percentiles. Income distribution shows that 44.7% of the population (9,557 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. This supports 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

The dwelling structure in Balgowlah-Clontarf-Seaforth, as per the latest Census, comprised 65.4% houses and 34.6% other dwellings (semi-detached, apartments, 'other' dwellings). In comparison, Sydney metro had 55.9% houses and 44.1% other dwellings. Home ownership in Balgowlah-Clontarf-Seaforth stood at 39.9%, with the rest either mortgaged (38.7%) or rented (21.4%). The median monthly mortgage repayment was $4,000, above Sydney metro's average of $2,427. Median weekly rent was $697, compared to Sydney metro's $470. Nationally, Balgowlah-Clontarf-Seaforth's mortgage repayments were significantly higher than the Australian average of $1,863, and rents 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, consisting of 45.8% couples with children, 24.8% couples without children, and 8.6% single parent families. Non-family households make up the remaining 20.0%, with lone person households at 17.4% and group households comprising 2.6% of the total. 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 higher educational attainment than the national average. As of 2016, 51.9% of residents aged 15 and above hold university qualifications, compared to 30.4% nationally and 32.2% in NSW. The area's most common qualification is bachelor degrees at 35.1%, followed by postgraduate qualifications (13.3%) and graduate diplomas (3.5%). Vocational pathways account for 22.0% of qualifications, with advanced diplomas at 11.2% and certificates at 10.8%.

Educational participation is high, with 33.2% of residents currently enrolled in formal education as of 2016. 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

Balgowlah-Clontarf-Seaforth has 208 active public transport stops, all of which are bus stops. These stops are served by 73 different routes that facilitate a total of 4,466 weekly passenger trips. The area's transport accessibility is rated as excellent, with residents located an average of 127 meters from the nearest stop. Most residents commute outward daily. Cars remain the primary mode of transport, used by 79% of residents, while buses are used by 9% and walking by 5%. On average, there are 1.4 vehicles per dwelling, higher than the regional average.

According to the 2021 Census, 62.7% of residents work from home, which may be influenced by COVID-19 conditions. The service frequency averages 638 trips per day across all routes, equating to approximately 21 weekly trips per stop. A map accompanies this data, displaying the 100 nearest stops to the area's centerpoint.

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 shows excellent health outcomes based on AreaSearch's evaluation of mortality rates and chronic condition prevalence, with very low prevalence across all age groups. The area has a high private health cover rate at approximately 85% (18,153 people), compared to Greater Sydney's 59.9% and the national average of 55.7%. Asthma and arthritis are the most common conditions, affecting 6.2 and 5.4% respectively.

77.5% of residents report no medical ailments, higher than Greater Sydney's 74.6%. The area has a higher proportion of seniors aged 65 and over at 16.6% (3,553 people), compared to Greater Sydney's 15.3%. Health outcomes among seniors are strong and align with national rankings.

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 was found to be more culturally diverse than most local areas, with 14.3% of its population speaking a language other than English at home as of the 2016 Census. Born overseas comprised 32.9%. Christianity was the dominant religion, making up 51.5%.

Judaism was overrepresented at 0.4%, compared to Greater Sydney's 0.8%. In terms of ancestry, English was highest at 30.5% (regional average: 19.0%), followed by Australian at 21.0% and Irish at 9.8%. French (1.1% vs regional 0.5%), South African (1.3% vs 0.5%) and Welsh (0.9% vs 0.4%) were notably overrepresented.

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 age group of 45-54 shows strong representation at 16.9%, compared to Greater Sydney's percentage, while the 25-34 cohort is less prevalent at 7.1%. According to post-2021 Census data, the 15-24 age group has grown from 12.3% to 14.6% of the population, whereas the 35-44 cohort has declined from 12.7% to 11.2%. Population forecasts for 2041 indicate substantial demographic changes in Balgowlah - Clontarf - Seaforth. Leading this shift, the 85+ age group is expected to grow by 85%, reaching 960 people from 519. Notably, the combined 65+ age groups will account for 100% of total population growth, reflecting the area's aging demographic profile. In contrast, the 55-64 and 25-34 cohorts are expected to experience population declines.