Seacombe Heights

Seacombe Heights is positioned among the lower quartile of areas assessed nationally for population growth based on AreaSearch's assessment of recent, and medium term trends

The population of Seacombe Heights is estimated at around 1,586 as of Feb 2026. This reflects an increase from the 2021 Census figure of 1,549 people. The latest estimate comes from AreaSearch's analysis of ABS population updates and address validation since the Census date. Between Jun 2024 and Feb 2026, overseas migration contributed approximately 65% to the area's population growth. By 2041, based on aggregated SA2-level projections, Seacombe Heights is expected to increase by 105 persons, reflecting a total increase of 7.9%.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, as released in 2024 with 2022 as the base year. For any SA2 areas not covered by this data, and for years post-2032, the SA State Government's Regional/LGA projections by age category, released in 2023 and based on 2021 data, are adopted with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. Considering the projected demographic shifts, a population increase just below the median of national areas is expected, with the area expected to increase by 105 persons to 2041 based on aggregated SA2-level projections, reflecting reflecting an increase of 7.9% in total over the 17 years.

Residential development activity is lower than average in Seacombe Heights according to AreaSearch's national comparison of local real estate markets

Based on AreaSearch analysis of ABS building approval numbers, allocated from statistical area data, Seacombe Heights averaged around 1 new dwelling approval per year over the past 5 financial years, totalling an estimated 5 homes. So far in FY-26, 2 approvals have been recorded. Over these 5 years (FY-21 to FY-25), an average of 12.6 people moved to the area for each dwelling built, indicating demand significantly outpacing supply.

New properties are constructed at an average expected cost value of $475,000, reflecting a developer focus on the premium segment with upmarket properties. Compared to Greater Adelaide, Seacombe Heights has significantly less development activity, 91.0% below regional average per person. This limited new supply generally supports stronger demand and values for established dwellings, although building activity has accelerated in recent years. This level is similarly under the national average, indicating the area's established nature and suggesting potential planning limitations. Recent building activity consists entirely of standalone homes, maintaining the area's traditional suburban character with a focus on family homes appealing to those seeking space.

With around 1063 people per dwelling approval, Seacombe Heights reflects a highly mature market. Looking ahead, Seacombe Heights is expected to grow by 126 residents through to 2041, according to the latest AreaSearch quarterly estimate. If current development rates continue, housing supply may not keep pace with population growth, potentially increasing competition among buyers and supporting stronger price growth.

Seacombe Heights has emerging levels of nearby infrastructure activity, ranking in the 24thth percentile nationally

Changes to local infrastructure significantly influence an area's performance. AreaSearch has identified two projects that may impact this region: Flagstaff Road Upgrade and Seaview High School Upgrade. Other notable projects include Southern Suburbs Residential Policy Code Amendment and Adelaide Public Transport Capacity and Access.

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

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AreaSearch analysis of employment trends sees Seacombe Heights performing better than 90% of local markets assessed across Australia

Seacombe Heights has a highly educated workforce with significant representation in essential services sectors. Its unemployment rate is 1.0%, lower than Greater Adelaide's 3.9%. Employment growth over the past year was estimated at 4.1%.

As of September 2025924 residents are employed, with an unemployment rate of 3.0%, below Greater Adelaide's rate. Workforce participation is high at 72.9% compared to Greater Adelaide's 66.4%. Only 11.8% of residents work from home. Key industries include health care & social assistance, construction, and education & training.

Health care & social assistance has a high employment share of 1.2 times the regional level, while professional & technical services show lower representation at 5.4%, compared to the regional average of 7.3%. Employment opportunities locally may be limited, as indicated by Census data on working population vs resident population. Between September 2024 and September 2025, employment levels increased by 4.1% and labour force grew by 4.0%, keeping unemployment relatively stable at 3.0%. By comparison, Greater Adelaide recorded employment growth of 3.0% and labour force growth of 2.9%, with a slight decrease in unemployment to 3.8%. National employment forecasts from Jobs and Skills Australia, published May-25, project national employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Seacombe Heights' employment mix suggests local employment should increase by 6.8% over five years and 14.2% over ten years, assuming constant population projections.

The area's income profile falls below national averages based on AreaSearch analysis

The suburb of Seacombe Heights had a median taxpayer income of $52,206 and an average income of $66,922 in the financial year 2023, according to postcode level ATO data aggregated by AreaSearch. These figures are comparable to national averages, with Greater Adelaide's median income being $54,808 and average income being $66,852 during the same period. Based on Wage Price Index growth of 8.8% since financial year 2023, estimated incomes for September 2025 would be approximately $56,800 (median) and $72,811 (average). As per 2021 Census figures, incomes in Seacombe Heights clustered around the 56th percentile nationally. Income distribution data showed that 37.7% of locals (597 people) fell into the $1,500 - $2,999 category, similar to the broader area where 31.8% occupied this range. After housing expenses, 86.6% of income remained for other expenses. The suburb's SEIFA income ranking placed it in the 6th decile.

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

The dwelling structure in Seacombe Heights, as per the latest Census, consisted of 97.7% houses and 2.3% other dwellings (semi-detached, apartments, 'other' dwellings). In comparison, Adelaide metro had 75.2% houses and 24.9% other dwellings. Home ownership in Seacombe Heights was at 38.1%, with mortgaged dwellings at 49.0% and rented ones at 12.8%. The median monthly mortgage repayment in the area was $1,850, higher than Adelaide metro's average of $1,562. The median weekly rent figure was recorded at $380, compared to Adelaide metro's $320. Nationally, Seacombe Heights' mortgage repayments were lower than the Australian average of $1,863, while rents exceeded the national figure of $375.

Seacombe Heights features high concentrations of family households, with a higher-than-average median household size

Family households account for 79.8% of all households, including 36.7% couples with children, 32.5% couples without children, and 8.7% single parent families. Non-family households make up the remaining 20.2%, consisting of 18.0% lone person households and 3.1% group households. The median household size is 2.6 people, which is larger than the Greater Adelaide average of 2.5.

Educational attainment in Seacombe Heights aligns closely with national averages, showing typical qualification patterns and performance metrics

In Seacombe Heights, 30.1% of residents aged 15 and above have university qualifications, exceeding the South Australian average of 25.7%. Bachelor degrees are the most common at 21.0%, followed by postgraduate qualifications (6.9%) and graduate diplomas (2.2%). Vocational credentials are also prevalent, with 33.8% of residents aged 15 and above holding such qualifications.

This includes advanced diplomas (10.2%) and certificates (23.6%). Educational participation is high, with 28.1% of residents currently enrolled in formal education. This comprises 9.7% in primary education, 7.1% in secondary education, and 6.2% pursuing tertiary education.

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

Seacombe Heights has ten operational public transport stops, all of which are bus stops. These stops are served by eight different routes that collectively facilitate 444 weekly passenger trips. The area's transport accessibility is considered good, with residents typically residing 269 meters from the nearest transport stop. In this predominantly residential area, most commuters travel outward, with cars being the primary mode of transportation at 90%. Train usage accounts for 6% of commutes. On average, there are 1.7 vehicles per dwelling, exceeding the regional average.

According to the 2021 Census, only 11.8% of residents work from home, which may be influenced by COVID-19 conditions. Across all routes, service frequency averages 63 trips per day, equating to approximately 44 weekly trips per individual stop.

Seacombe Heights's residents are extremely healthy with both young and old age cohorts seeing low prevalence of common health conditions

Analysis of health metrics shows strong performance throughout Seacombe Heights.

AreaSearch's assessment indicates low prevalence of common health conditions across both young and old age cohorts. Private health cover is high at approximately 53% of the total population (~847 people), leading that of the average SA2 area. The most common medical conditions are mental health issues, impacting 8.2% of residents, and arthritis, affecting 7.2%. A significant majority, 72.0%, declare themselves completely clear of medical ailments, compared to 67.9% across Greater Adelaide. Working-age residents exhibit low chronic condition prevalence. The area has 19.1% of residents aged 65 and over (302 people). Health outcomes among seniors are particularly strong, broadly in line with national rankings for the general population.

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

Seacombe Heights had a higher cultural diversity compared to most local areas, with 28.8% of its residents born overseas and 19.7% speaking a language other than English at home. Christianity was the predominant religion in Seacombe Heights, accounting for 37.6% of its population. Notably, the 'Other' religious category comprised 1.4%, slightly higher than the 1.8% regional average.

The top three ancestry groups were English (29.7%), Australian (22.3%), and Scottish (7.4%). Some ethnic groups showed notable differences: Hungarian residents made up 0.5% in Seacombe Heights compared to 0.3% regionally, Polish residents were at 1.2% versus 1.0%, and German residents stood at 5.4% compared to 5.1%.

Seacombe Heights's population is slightly older than the national pattern

The median age in Seacombe Heights is 40 years, similar to Greater Adelaide's average of 39 years but somewhat older than Australia's median age of 38 years. The 45-54 age group constitutes 13.9% of the population, higher than Greater Adelaide's percentage, while the 25-34 cohort makes up 11.9%. According to post-2021 Census data, the 15-24 age group has increased from 10.7% to 12.2%, and the 75-84 cohort has grown from 7.6% to 8.9%. Conversely, the 65-74 age group has decreased from 9.7% to 8.2%. Population forecasts for 2041 indicate significant demographic changes in Seacombe Heights. Notably, the 85+ age group is expected to grow by 124%, reaching 71 people from 31. Conversely, the 0-4 and 65-74 cohorts are projected to experience population declines.