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

Based on analysis of ABS population updates for the broader area, and new addresses validated by AreaSearch, as of Nov 2025, the Seacombe Heights statistical area (Lv2) has an estimated population of around 1,583. This reflects an increase of 34 people (2.2%) since the 2021 Census, which reported a population of 1,549 people in the area. The change is inferred from the resident population of 1,573, estimated by AreaSearch following examination of the latest ERP data release by the ABS on June 2024 and address validation since the Census date. This level of population equates to a density ratio of 1,884 persons per square kilometer, which is above the average seen across national locations assessed by AreaSearch. Population growth for the area was primarily driven by overseas migration that contributed approximately 65.0% of overall population gains during recent periods.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, as released in 2024 with a base year of 2022. 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 are adopted, released in 2023 and based on 2021 data, 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 for Seacombe Heights (SA2), with an expected increase of 104 persons by 2041 based on aggregated SA2-level projections, reflecting an overall increase of 8.2% 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

AreaSearch analysis of ABS building approval numbers indicates Seacombe Heights averaged approximately one new dwelling approval per year over the past five financial years, totalling an estimated five homes. In FY-26 so far, two approvals have been recorded. This averages to around 12.6 people moving to the area annually for each dwelling built between FY-21 and FY-25, suggesting demand significantly outpaces supply.

New properties are constructed at an average expected cost of $475,000, indicating a focus on the premium segment with upmarket dwellings. Compared to Greater Adelaide, Seacombe Heights has significantly less development activity, 91.0% below the regional average per person. This limited new supply generally supports stronger demand and values for established dwellings. However, building activity has accelerated in recent years. Recent 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, AreaSearch estimates the area will grow by 129 residents through to 2041. 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 27thth percentile nationally

Two projects identified by AreaSearch may impact the area: 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 the Greater Adelaide average of 3.9%.

Employment growth over the past year was estimated at 4.1%. As of September 2025923 residents are employed with an unemployment rate of 3.0%, below Greater Adelaide's 3.9%, and workforce participation is 65.3% compared to Greater Adelaide's 61.7%. Key industries of employment among residents are health care & social assistance, construction, and education & training. The area specializes in health care & social assistance with an employment share 1.2 times the regional level, but has lower representation in professional & technical services at 5.4% compared to the regional average of 7.3%.

Employment opportunities locally may be limited as indicated by Census data comparing working population to resident population. Between September 2024 and September 2025, employment levels increased by 4.1% and labour force increased by 4.0%, maintaining a stable unemployment rate. In comparison, Greater Adelaide recorded employment growth of 3.0%, labour force growth of 2.9%, with unemployment falling slightly to 3.8%. State-level data as of 25-Nov-25 shows SA employment grew by 1.19% year-on-year, with the state unemployment rate at 4.0%, outperforming the national average unemployment rate of 4.3%. National employment forecasts from May-25 project a 6.6% increase over five years and 13.7% over ten years. Applying these projections to Seacombe Heights' employment mix suggests local employment should increase by approximately 6.8% over five years and 14.2% over ten years, though these are simple extrapolations for illustrative purposes only and do not account for localized population projections.

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

The suburb of Seacombe Heights has a median taxpayer income of $52,206 and an average income of $66,922 based on the latest postcode level ATO data aggregated by AreaSearch for the financial year 2023. These figures are comparable to national averages, differing from Greater Adelaide's median income of $54,808 and average income of $66,852. By September 2025, current estimates suggest a median income of approximately $56,800 and an average income of $72,811, factoring in Wage Price Index growth of 8.8% since the financial year 2023. According to the 2021 Census figures, incomes in Seacombe Heights cluster around the 56th percentile nationally. Income distribution data indicates that 37.7% of locals (596 people) fall within the $1,500 - $2,999 category, a pattern also seen in the broader area where 31.8% occupy this range. After housing expenses, 86.6% of income remains for other expenses. The suburb's SEIFA income ranking places 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. In comparison, Adelaide metro had 70.8% houses and 29.2% 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 $1,700. The median weekly rent figure in Seacombe Heights was $380, compared to Adelaide metro's $330. Nationally, Seacombe Heights' mortgage repayments were lower at $1,863 and rents higher at $375.

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

Family households constitute 79.8 percent of all households, including 36.7 percent couples with children, 32.5 percent couples without children, and 8.7 percent single parent families. Non-family households comprise the remaining 20.2 percent, with lone person households at 18.0 percent and group households making up 3.1 percent of the total. The median household size is 2.6 people, larger than the Greater Adelaide average of 2.4.

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

University qualifications are prominent in Seacombe Heights, with 30.1% of residents aged 15 and above holding such credentials. This figure is higher than the South Australian average of 25.7%. Bachelor degrees are the most common at 21.0%, followed by postgraduate qualifications at 6.9% and graduate diplomas at 2.2%.

Vocational skills are also prevalent, with 33.8% of residents aged 15 and above possessing trade or technical credentials. This includes advanced diplomas held by 10.2% of residents and certificates held by 23.6%. Educational participation is high in the area, with 28.1% of residents currently enrolled in formal education. This includes 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

Transport analysis shows 10 active stops operating within Seacombe Heights, all of which are bus stops. These stops are served by 8 distinct routes that together facilitate 444 weekly passenger trips. Transport accessibility is deemed good, with residents generally situated 269 meters from the nearest stop.

Service frequency averages 63 trips per day across all routes, equating to roughly 44 weekly trips per individual stop.

The level of general health in Seacombe Heights is notably higher than the national average with both young and old age cohorts seeing low prevalence of common health conditions

Seacombe Heights shows superior health outcomes for both younger and older age groups, with low prevalence of common health conditions. Its private health cover rate is approximately 53% (~846 people), slightly higher than Greater Adelaide's average of 51.4%.

Mental health issues affect 8.2% of residents, while arthritis impacts 7.2%, compared to 68.1% who report no medical ailments, higher than Greater Adelaide's 68.1%. The area has 18.8% (297 people) aged 65 and over, with seniors' health outcomes broadly matching the general population's profile.

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 than most local areas, with 28.8% of its population born overseas and 19.7% speaking a language other than English at home. Christianity was the predominant religion in Seacombe Heights, comprising 37.6% of the population. The category 'Other' showed an overrepresentation in Seacombe Heights with 1.4%, compared to 1.6% across Greater Adelaide.

Regarding ancestry, the top three groups were English (29.7%), Australian (22.3%), and Scottish (7.4%). Notably, Hungarian (0.5%) was overrepresented compared to the regional average of 0.3%. Polish also showed an overrepresentation at 1.2%, compared to 1.1% regionally, as did German at 5.4% versus 5.0%.

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 age group of 45-54 years shows strong representation at 14.1% compared to Greater Adelaide, while the 25-34 age group is less prevalent at 12.1%. According to data from the 2021 Census, the 15 to 24 age group has grown from 10.7% to 12.1% of the population in Seacombe Heights. Conversely, the 65 to 74 age group has declined from 9.7% to 8.3%. Population forecasts for the year 2041 indicate substantial demographic changes for Seacombe Heights. Leading this shift, the 85+ age group is expected to grow by 126%, reaching a population of 68 from its current level of 30. Conversely, the 65 to 74 and 0 to 4 age groups are forecasted to experience population declines.