Seaford (SA)

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

Based on ABS population updates and AreaSearch validation, Seaford's population was estimated at 4,858 as of Feb 2026. This reflected an increase of 365 people since the 2021 Census, which reported a population of 4,493. The change was inferred from AreaSearch's estimate of 4,626 residents following examination of ABS ERP data release in June 2024 and additional validated new addresses since the Census date. This resulted in a density ratio of 1,635 persons per square kilometer, above national averages assessed by AreaSearch. Seaford's growth of 8.1% since the 2021 Census exceeded both SA3 area (6.4%) and SA4 region, marking it as a growth leader. Overseas migration contributed approximately 41.0% to overall population gains during recent periods, with all drivers being positive factors.

AreaSearch adopts ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022. For areas not covered and years post-2032, SA State Government's Regional/LGA projections by age category are adopted, based on 2021 data and released in 2023. Considering projected demographic shifts, the suburb of Seaford is expected to grow by 995 persons to 2041, reflecting a gain of 20.0% over the 17 years.

AreaSearch assessment of residential development activity positions Seaford among the top 25% of areas assessed nationwide

Based on AreaSearch analysis of ABS building approval numbers, allocated from statistical area data, Seaford has recorded approximately 31 residential properties granted approval annually. Over the past five financial years, between FY21 and FY25, around 159 homes were approved, with an additional 29 approved so far in FY26. On average, each home built over these five years accommodates about 3.1 new residents per year, indicating a significant demand exceeding supply, which often leads to price growth and increased buyer competition.

The average construction value of new properties is approximately $380,000, suggesting a focus on the premium segment with upmarket properties. In FY26, there have been $421,000 in commercial approvals, indicating minimal commercial development activity compared to residential. When comparing Seaford's development activity to Greater Adelaide over the past five years, it shows moderately higher activity at 42.0% above the regional average per person.

This maintains good buyer choice while supporting existing property values. The new development consists of approximately 81.0% standalone homes and 19.0% attached dwellings, preserving Seaford's suburban nature with an emphasis on detached housing attracting space-seeking buyers. With around 133 people per dwelling approval, Seaford exhibits characteristics of a growth area. According to the latest AreaSearch quarterly estimate, Seaford is projected to gain approximately 970 residents by 2041. Development in Seaford appears to be keeping pace with projected population growth, although buyers may face increasing competition as the population expands.

Seaford has limited levels of nearby infrastructure activity, ranking in the 16thth percentile nationally

Changes in local infrastructure significantly affect an area's performance. AreaSearch has identified three major projects that could impact this region. Notable projects include Sunset Residential Development, Fleurieu Connections - Main South Road Duplication, Seaford Rail Extension, and Victor Harbor Road Duplication. The following details the most relevant projects.

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.

Seaford shows employment indicators that trail behind approximately 70% of regions assessed across Australia

Seaford has a balanced workforce with white and blue collar jobs well represented, particularly in essential services sectors. The unemployment rate is 5.6% and employment growth over the past year is estimated at 3.0%. As of September 2025, 2,292 residents are employed while the unemployment rate is 1.7% higher than Greater Adelaide's rate of 3.9%.

Workforce participation in Seaford is lower at 62.5%, compared to Greater Adelaide's 66.4%. According to Census responses, only 9.1% of residents work from home, though Covid-19 lockdown impacts may have influenced this figure. Dominant employment sectors among Seaford residents include health care & social assistance, construction, and retail trade. The area specializes in construction, with an employment share 1.6 times the regional level.

Conversely, professional & technical services show lower representation at 3.5%, compared to the regional average of 7.3%. Many Seaford residents commute elsewhere for work, as indicated by the count of Census working population relative to local population. Between September 2024 and September 2025, employment levels in Seaford increased by 3.0% while labour force grew by 3.2%, causing unemployment rate to rise by 0.2 percentage points. In comparison, Greater Adelaide recorded employment growth of 3.0%, labour force growth of 2.9%, and a decrease in unemployment rate by 0.1 percentage points. National employment forecasts from Jobs and Skills Australia, released in May-25, suggest national employment will expand by 6.6% over five years and 13.7% over ten years. Applying these projections to Seaford's employment mix indicates local employment should increase by 6.4% over five years and 13.3% over ten years, assuming constant population projections for illustrative purposes.

Income metrics place the area in the bottom 10% of locations nationally according to AreaSearch analysis

The latest postcode level ATO data for financial year 2023 shows that Seaford's median income is $44,499 and average income is $50,256. This is below Greater Adelaide's median income of $54,808 and average income of $66,852. By September 2025, estimates suggest the median income will be approximately $48,415 and average income $54,679, accounting for an 8.8% Wage Price Index growth since financial year 2023. The 2021 Census indicates that incomes in Seaford fall between the 17th and 20th percentiles nationally. Income brackets show that 29.4% of residents (1,428 people) earn between $1,500 and $2,999 annually, which is consistent with broader metropolitan trends at 31.8%. Housing affordability pressures are severe in Seaford, with only 82.8% of income remaining, ranking at the 16th percentile nationally.

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

Seaford's dwelling structures, as per the latest Census, consisted of 85.3% houses and 14.7% other dwellings (semi-detached, apartments, 'other' dwellings). In comparison, Adelaide metro had 75.2% houses and 24.9% other dwellings. Home ownership in Seaford stood at 34.0%, with mortgaged dwellings at 37.8% and rented ones at 28.2%. The median monthly mortgage repayment was $1,400, below Adelaide metro's average of $1,562. Median weekly rent in Seaford was $330, compared to Adelaide metro's $320. Nationally, Seaford's mortgage repayments were lower at $1,400 than the Australian average of $1,863, while rents were substantially below the national figure of $375.

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

Family households account for 67.4% of all households, including 24.8% couples with children, 29.1% couples without children, and 12.9% single parent families. Non-family households make up the remaining 32.6%, with lone person households at 29.8% and group households comprising 2.6%. The median household size is 2.3 people, which is smaller than the Greater Adelaide average of 2.5.

Educational outcomes in Seaford fall within the lower quartile nationally, indicating opportunities for improvement in qualification attainment

The area's university qualification rate is 15.3%, significantly lower than Australia's average of 30.4%. Bachelor degrees are the most common at 10.8%, followed by postgraduate qualifications (2.4%) and graduate diplomas (2.1%). Vocational credentials are prevalent, with 42.3% of residents aged 15+ holding them, including advanced diplomas (10.5%) and certificates (31.8%). Educational participation is high, with 27.0% of residents currently enrolled in formal education: 11.0% in primary, 7.3% in secondary, and 3.3% in tertiary education.

Educational participation is notably high, with 27.0% of residents currently enrolled in formal education. This includes 11.0% in primary education, 7.3% in secondary education, and 3.3% pursuing tertiary education.

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

Seaford has 38 active public transport stops serving a mix of train and bus services. These stops are covered by 23 routes that facilitate 1,425 weekly passenger trips in total. Residents enjoy excellent transport accessibility, with an average distance of 174 meters to the nearest stop. In this predominantly residential area, most commuters travel outward. Cars remain the primary mode of transport, used by 89% of residents, while trains are used by 7%. The average vehicle ownership per dwelling is 1.2, lower than the regional average.

According to the 2021 Census, only 9.1% of Seaford residents work from home, which may be influenced by COVID-19 conditions. Across all routes, an average of 203 trips are made daily, equating to approximately 37 weekly trips per individual stop.

Health performance in Seaford is well below average with prevalence of common health conditions notable across both younger and older age cohorts

Health data indicates significant health challenges in Seaford, as assessed by AreaSearch's analysis of mortality rates and chronic condition prevalence. Notably, common health conditions are prevalent across both younger and older age cohorts. Private health cover is found to be very low at approximately 47% of the total population (~2,279 people), compared to 52.7% in Greater Adelaide and a national average of 55.7%.

The most common medical conditions in Seaford are arthritis (11.8%) and mental health issues (10.0%), while 58.5% of residents report being completely clear of medical ailments, compared to 67.9% in Greater Adelaide. The working-age population faces significant health challenges due to elevated chronic condition rates. Seaford has a higher proportion of residents aged 65 and over (26.9%, or 1,306 people) than Greater Adelaide (19.3%). Health outcomes among seniors present some challenges, with national rankings generally in line with the overall population.

Seaford ranks below the Australian average when compared to other local markets across a number of language and cultural background related metrics

Seaford's cultural diversity was below average, with 74.7% born in Australia, 88.9% being citizens, and 95.0% speaking English only at home. Christianity was the main religion, comprising 35.6%. Judaism was overrepresented compared to Greater Adelaide, with 0.0% versus 0.1%.

The top three ancestral groups were English (38.2%), Australian (26.9%), and Scottish (7.6%). Welsh (0.9%) and Dutch (2.0%) were notably overrepresented in Seaford compared to regional averages of 0.6% and 1.2%, respectively. German was slightly underrepresented at 4.8% versus the region's 5.1%.

Seaford hosts a notably older demographic compared to the national average

The median age in Seaford is 43 years, which is significantly higher than Greater Adelaide's average of 39 years and Australia's national average of 38 years. Compared to Greater Adelaide, Seaford has a higher proportion of residents aged 75-84 (10.1%) but fewer residents aged 25-34 (10.2%). According to the 2021 Census, the percentage of the population in the 75 to 84 age group has increased from 8.9% to 10.1%, while the percentage in the 5 to 14 age group has decreased from 12.1% to 10.5%. By 2041, demographic projections indicate significant shifts in Seaford's age structure. The number of people aged 85 and above is expected to grow by 111%, reaching 491 from 233. In contrast, the 5 to 14 age group is projected to grow by a modest 3%, with an increase of 16 people.