Seacliff Park

Population growth drivers in Seacliff Park are slightly above average based on AreaSearch's ranking 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 Feb 2026 the suburb of Seacliff Park's population is estimated at around 2740. This reflects an increase of 96 people since the 2021 Census, which reported a population of 2644. The change is inferred from the resident population of 2726, estimated by AreaSearch following examination of the latest ERP data release by the ABS in June 2024, and an additional 30 validated new addresses since the Census date. This level of population equates to a density ratio of 1196 persons per square kilometer. Population growth for the suburb was primarily driven by overseas migration, contributing approximately 65% 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 areas not covered and years post-2032, the SA State Government's Regional/LGA projections by age category are adopted, released in 2023 based on 2021 data, with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. Anticipating future population dynamics, a population increase just below the median of national statistical areas is expected for Seacliff Park, with an increase of 200 persons to 2041 based on aggregated SA2-level projections, reflecting an overall increase of 7.5% over the 17 years.

AreaSearch analysis of residential development drivers sees Seacliff Park recording a relatively average level of approval activity when compared to local markets analysed countrywide

Based on AreaSearch analysis using ABS building approval numbers from statistical area data, Seacliff Park has averaged approximately 17 new dwelling approvals annually. Over the past five financial years, from FY-21 to FY-25, around 87 homes were approved, with a further 12 approved so far in FY-26. This results in an estimated average of 1.1 new residents per year per dwelling constructed during this period.

The supply and demand balance appears stable, with developers focusing on the premium market, as indicated by the average construction value of $475,000 for new homes. In FY-26, there have been $14.6 million in commercial approvals, indicating moderate levels of commercial development. Compared to Greater Adelaide, Seacliff Park's construction activity per person is comparable, maintaining market equilibrium with surrounding areas, although recent periods have seen increased development activity.

New developments consist of 82.0% standalone homes and 18.0% medium and high-density housing, preserving the area's suburban nature and attracting space-seeking buyers. With around 118 people per dwelling approval, Seacliff Park is characterized as a low density area. According to AreaSearch's latest quarterly estimate, the population is forecasted to grow by 207 residents through to 2041. Given current development patterns, new housing supply should meet demand, offering favourable conditions for buyers and potentially facilitating further population growth beyond current projections.

Seacliff Park has limited levels of nearby infrastructure activity, ranking in the 12thth percentile nationally

The performance of an area is significantly influenced by changes to local infrastructure, major projects, and planning initiatives. AreaSearch has identified a single project that is expected to impact this particular area. Key projects include Southern Suburbs Residential Policy Code Amendment, Adelaide Public Transport Capacity and Access, Adelaide's Inner And Outer Ring Route Capacity Improvements, and North South Corridor. The following list details those projects most likely to be relevant.

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

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Employment conditions in Seacliff Park demonstrate exceptional strength compared to most Australian markets

Seacliff Park has an educated workforce with key services sectors well-represented. The unemployment rate in the area is 2.8%, lower than Greater Adelaide's 3.9%. Employment growth over the past year was estimated at 3.3%.

As of September 2025, 1,585 residents are employed and the unemployment rate is 1.2% below Greater Adelaide's rate. Workforce participation in Seacliff Park is higher at 71.5%, compared to Greater Adelaide's 66.4%. Home-based work accounts for a low 11.4% of jobs, considering Covid-19 lockdown impacts. Leading industries among residents are health care & social assistance, construction, and education & training.

Construction employment is particularly high at 1.4 times the regional level. Manufacturing, however, shows lower representation at 4.9% compared to the regional average of 7.0%. The area offers limited local employment opportunities. Between September 2024 and September 2025, employment levels increased by 3.3%, labour force grew by 3.5%, leading to a rise in unemployment rate by 0.2 percentage points. In contrast, Greater Adelaide saw employment rise by 3.0%, labour force grow by 2.9%, and unemployment fall by 0.1 percentage points. National employment forecasts from Jobs and Skills Australia (May-25) project national employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Seacliff Park's employment mix suggests local employment should increase by 7.0% over five years and 14.4% over ten years, though this is a simple extrapolation for illustrative purposes and does not account for local population projections.

Income levels align closely with national averages, indicating typical economic conditions for Australian communities according to AreaSearch analysis

The suburb of Seacliff Park had a median income among taxpayers of $54,832 and an average income of $70,289 in the financial year 2023, according to ATO data aggregated by AreaSearch. This compares to figures for Greater Adelaide of $54,808 and $66,852 respectively. Based on Wage Price Index growth of 8.8% since financial year 2023, estimated incomes as of September 2025 would be approximately $59,657 (median) and $76,474 (average). According to the 2021 Census, household, family and personal incomes in Seacliff Park were at the 53rd percentile nationally. In this suburb, 32.2% of the population fell within the $1,500 - $2,999 income range, similar to the metropolitan region where this cohort represented 31.8%. After housing expenses, 85.2% of income remained for other expenses. Seacliff Park's SEIFA income ranking placed it in the 7th decile.

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

In Seacliff Park, as per the latest Census, 83.9% of dwellings were houses, with the remaining 16.1% consisting of semi-detached homes, apartments, and other types. This compares to Adelaide metro's figures of 75.2% houses and 24.9% other dwellings. Home ownership in Seacliff Park stood at 37.3%, with mortgaged properties at 41.7% and rented ones at 20.9%. The median monthly mortgage repayment was $1,800, higher than Adelaide metro's average of $1,562. Median weekly rent in Seacliff Park was $370, compared to Adelaide metro's $320. Nationally, Seacliff Park's mortgage repayments were lower than the Australian average of $1,863, and rents were less than the national figure of $375.

Seacliff Park has a typical household mix, with a lower-than-average median household size

Family households account for 70.4% of all households, including 30.4% couples with children, 28.0% couples without children, and 11.2% single parent families. Non-family households make up the remaining 29.6%, with lone person households at 26.1% and group households comprising 3.7%. The median household size is 2.4 people, which is smaller than the Greater Adelaide average of 2.5.

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

The area's educational profile is notable regionally with university qualification rates at 31.4%, exceeding both the South Australian average of 25.7% and that of the SA4 region at 28.1%. Bachelor degrees are most prevalent at 20.9%, followed by postgraduate qualifications (7.4%) and graduate diplomas (3.1%). Trade and technical skills are prominent, with 36.7% of residents aged 15+ holding vocational credentials – advanced diplomas (12.2%) and certificates (24.5%).

Educational participation is high at 26.9%, including primary education (8.9%), secondary education (6.9%), and tertiary education (5.4%).

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

Seacliff Park has 17 active public transport stops, all serving buses. These stops are covered by 14 different routes, offering a total of 1,196 weekly passenger trips. The area's transport accessibility is rated excellent, with residents located an average of 179 meters from the nearest stop. Most residents commute outward daily. Car remains the primary mode of transport, used by 87% of residents, while train usage stands at 8%. On average, there are 1.5 vehicles per dwelling.

According to the 2021 Census, 11.4% of residents work from home, which may be influenced by COVID-19 conditions. Service frequency across all routes averages 170 trips per day, equating to approximately 70 weekly trips per individual stop.

Seacliff Park'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 Seacliff Park. AreaSearch's assessment found low prevalence of common health conditions in both young and old age cohorts.

The rate of private health cover was approximately 55% of the total population (~1,500 people), compared to 52.7% across Greater Adelaide. The most common medical conditions were arthritis and asthma, impacting 7.6 and 7.3% of residents respectively. 70.8% of residents declared themselves completely clear of medical ailments, compared to 67.9% across Greater Adelaide. Working-age residents showed low chronic condition prevalence. The area has 20.9% of residents aged 65 and over (572 people), which is higher than the 19.3% in Greater Adelaide. Health outcomes among seniors were particularly strong, with national rankings broadly in line with the general population.

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

Seacliff Park's cultural diversity was above average, with 11.9% of its population speaking a language other than English at home and 26.5% born overseas. Christianity was the predominant religion in Seacliff Park, comprising 40.6% of its population. The 'Other' category showed an overrepresentation in Seacliff Park compared to Greater Adelaide, with 2.2% versus 1.8%.

In terms of ancestry, the top three groups were English (31.2%), Australian (26.3%), and Other (8.3%). Notable differences existed for Polish (1.2% vs regional 1.0%), German (5.9% vs 5.1%), and Russian (0.4% vs 0.3%) groups.

Seacliff Park's median age exceeds the national pattern

The median age in Seacliff Park is 41 years, which is higher than Greater Adelaide's average of 39 years and exceeds the national average of 38 years. The age profile shows that those aged 45-54 are particularly prominent, making up 13.7% of the population, while the 25-34 age group is smaller at 11.9%. Between 2021 and present, the 15 to 24 age group has grown from 10.9% to 12.5%, and the 75 to 84 cohort has increased from 5.7% to 7.1%. Conversely, the 65 to 74 age group has declined from 12.1% to 10.7%. By 2041, demographic projections show significant shifts in Seacliff Park's age structure. The 85+ age cohort is projected to grow by 87 people (102%), increasing from 84 to 172. Conversely, both the 5 to 14 and 65 to 74 age groups are expected to decrease in number.