Seaton
The suburb has an overseas-born share of 30.6%, 9 percentage points above the national comparison, helping explain its Italian, Greek and Punjabi language presence. Compared with nearby Findon and West Lakes, Seaton presents an established, family-oriented housing profile, with 66.6% separate houses and 60.0% three-bedroom homes. Its 0.82% annual growth trend suggests steady demand rather than a rapid reset.
Population
10,877
Median Age
40.0
Household IncomeiMedian weekly household income (ABS Census)
$1,300/wk
DAs (12 months)iDevelopment Applications lodged in the past year
70
Median House
$1.1M
First quarter 2026
Separate houses account for 66.6%, semi-detached homes 24.6% and apartments 8.7%, while three-bedroom dwellings make up 60.0% of stock. The mortgage cost is $1,700 a month, yet repayments equal 30.2% of household income and are flagged as stressed, making deposit size and cash-flow buffers central to the decision.
For Buyers
Separate houses account for 66.6%, semi-detached homes 24.6% and apartments 8.7%, while three-bedroom dwellings make up 60.0% of stock. The mortgage cost is $1,700 a month, yet repayments equal 30.2% of household income and are flagged as stressed, making deposit size and cash-flow buffers central to the decision.
For Investors
Rental demand has a meaningful base: 36.2% of Seaton households rent, compared with 30.6% owning outright and 30.8% paying a mortgage. Weekly rent is $310 and vacancy is 6.4%, a combination that may give tenants more choice than in a tightly supplied market while still providing an established renter pool. Development activity is notable at 71 applications in 12 months, including a mixed-use office and dwelling proposal, which could gradually add competition or improve amenity.
Development Activity
Total DAs
499
Last 12 Months
70
YoY ChangeiYear-over-year change in DA lodgements
+7.7%
Avg DA CostiAverage estimated cost per DA in the past year
N/A
Monthly DA Lodgements
DA Categories
Schools in Seaton
Open-register school locations for education access. This is not a school-quality ranking.
Seaton Park Primary School
Seaton High School
Demographics
Seaton's median age of 40 matches the national comparison, while its 2.3-person average household is 0.2 below the national figure. Overseas-born residents account for 30.6%, 9 percentage points above national levels, and the largest reported ancestries are English at 2,760, Italian at 2,259 and Greek at 644. Italian is the leading non-English language with 371 speakers, followed by Punjabi at 164 and Greek at 163. Household structure is mixed: couples with children represent 38.7% of families, couples without children 37.1%, and one-parent families 22.0%. Compared with a younger, more student-heavy area, Seaton's university-educated share is 31.6%, only 1.5 points above national.
Age Distribution
Bedrooms
Dwelling Structure
66.6%
Houses
24.6%
Townhouse
8.7%
Apartment
Tenure
Compared with the earlier quarter, the latest price leaves little room for buyers relying on recent entry-level conditions. Tenure is split between 30.6% outright ownership, 30.8% mortgages and 36.2% renting, so the suburb contains a substantial mix of established owners and active renters. Stock is weighted toward three-bedroom homes at 60.0%, with 66.6% separate houses and 24.6% semi-detached dwellings. The 30.2% mortgage-to-income ratio is above the 23.8% rent-to-income ratio, helping explain the mortgage-stress flag.
Mortgage / mo
$1,700
Rent / wkiABS Census 2021 median across all dwelling types. Current market rents are typically higher.
$310
Census 2021
HH Size
2.3
Personal Income / wk
$696
Vacancy Ratei% of dwellings unoccupied on Census night (ABS 2021)
6.4%
Unoccupied
308
Rent / IncomeiMedian rent as % of household income. Over 30% = housing stress
23.8%
Mortgage / IncomeiMedian mortgage as % of household income. Over 30% = housing stress
30.2% stressed
Community Profile
Languages Spoken at Home
Ancestry
Household Composition
38.7%
Couples with children
37.1%
Couples, no children
22.0%
Single parent
2,911
Total families
Economy & Employment
Healthcare anchors Seaton's employment base at 19.8% and 643 workers, followed by education at 10.5% and 341, construction at 9.4% and 306, public administration at 8.2% and 268, and retail at 7.6% and 246. This mix links local demand to care, education, trades and government services rather than one industry alone. Professionals number 970, while clerical and administrative workers number 760 and trades workers 758, reinforcing a broad occupational base. Unemployment is 5.0% with 58.1% participation. Compared with broader advantage measures, the household income percentile is 30.9 and SEIFA deciles are IEO 5, IER 3, IRSD 4 and IRSAD 5, pointing to economic resources below the suburb's mixed occupational base.
Unemployment
5.0%
Labour Force
5,365
Unemployed
269
Source: ABS Census 2021
Socio-Economic Indexes (SEIFA)iABS index ranking suburbs from 1 (most disadvantaged) to 10 (most advantaged)
Full-time
58.4%
Part-time
35.8%
Participation
58.1%
Employed
5,096
Full-time and part-time are shares of the employed. Source: ABS Census 2021
Occupations
Top Industries
University
31.6%
Postgraduate
6.6%
Born Overseas
30.6%
Dwellings
4,525
Transport to Work
Seaton provides a practical, car-oriented setup across 4.59 square kilometres, with density of 2,371.1 people per square kilometre. Car driving accounts for 78.9% of commuting, versus 5.4% using public transport, while 8.6% work from home, so daily convenience is likely to depend more on road access than transit reliance. Two nearby government schools cover primary and secondary education, giving families local sector and year-level options, although enrolment zones should be checked against the exact address. Crime is recorded at 56.7 incidents per 1,000 residents, or 617 incidents, and IRSAD decile 5 places Seaton around the middle of the socioeconomic scale. Compared with transit-led areas, its strengths are space and established services rather than car-free mobility.
Drive
78.9%
Public Transport
5.4%
Walk / Cycle
1.8%
Work from Home
8.6%
Population Forecast
+0.82%/yr
(+151 people/yr)
EstablishedSeaton has an established growth profile, with the forecast trend running at 0.82% a year and overseas migration identified as the primary driver. Population change across the wider area is 11.4% over 10 years, above zero but consistent with a measured trajectory rather than a rapid expansion cycle. The shift outlook is Mixed: rent growth is 39.1%, affordability is marked Improving from 46.5% in 2011 to 42.8% in 2021, and the senior share has risen 1.6 points. Gentrification is rated Not gentrifying with a score of 14, although the shift model records Early signs at 42. Compared with a high-growth corridor, these signals favour gradual change driven by migration and established housing demand.
Historical + Forecast
Hamilton-Perry + Holt smoothing on ERP 2001-2025
Age Cohort Forecast
Primary Driver
Overseas Migration
Net Overseas / yr
+212
Net Internal / yr
+10
Gentrification Signal
Not gentrifying
Population +13% since 2011, Strong overseas inflow +212/yr
Safety & Crime
Total Offences
617
Year ending June 2024
Rate per 1,000 People
56.7
Source: Crime Statistics Agency Victoria / SA Police
National Ranking iPercentile rank among ~15,000 AU suburbs. 90% = higher than 90% of suburbs
How Seaton compares to ~15,000 Australian suburbs
Frequently Asked Questions
What schools are in Seaton?
Seaton has Seaton High School for secondary education and Seaton Park Primary School for primary education, both government schools. The local mix therefore covers 2 main year-level stages, but families should confirm enrolment zones and out-of-area rules for the exact address before signing a contract.
Is Seaton safe?
Safety is mixed rather than uniform: Seaton recorded 617 crimes, equating to 56.7 incidents per 1,000 residents. That figure should be read alongside the specific street, property type and time of day, because suburb-wide rates can conceal local variation. Check current police information before deciding.
How is Seaton's population changing?
Seaton's population is 10,877 today, while the wider-area forecast records 11.4% change over 10 years and an annual trend of 0.82%. Overseas migration is the primary driver. The trajectory is Mixed, and gentrification is rated Not gentrifying at 14, so change appears gradual rather than a rapid demographic reset.
How to read these comparisons
Phrases like "above the national average" reference the unweighted median across Australian suburbs with more than 1,000 residents, not population-weighted national figures. Suburb-level medians are more useful for ranking suburbs against each other; ABS census headlines are population-weighted (so dominated by Sydney and Melbourne) and can read very differently.
Current baseline (refreshed 2026-05-10): median age 40, university-educated 30.1%, born overseas 21.6%, average household size 2.5 people.
Data sources: ABS 2021 Census (demographics, income, tenure), SA Department for Housing and Urban Development (house prices), state education open registers (school locations), state Crime Statistics agencies (offences), council DA portals (development applications). Population forecasts use a Hamilton-Perry cohort model calibrated to ABS ERP.
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