Seaford SA

Postcode 5169 · Onkaparinga LGA

Seaford is a smaller suburb in South Australia within the Onkaparinga local government area (postcode 5169). With a population of 4,493, the suburb has an established demographic with a median age of 43. Households earn a median income of $65K per year, with an average household size of 2.3 people. The most common occupations are technicians & trades, professionals, community & personal service. The top ancestries reported are English, Australian, Scottish.

The median house price in Seaford is $924,000, having surged 15.5% over the past year. Units have a median price of $547,000 (+16.5% YoY). The current median weekly rent is $562. This gives a gross rental yield of approximately 3.2%. The median monthly mortgage repayment is $1,400.

Seaford is served by 3 schools, including 2 primary, 1 secondary. The average ICSEA score is 999, which is around the national average of 1,000. Public transport access includes 1 rail station, 36 bus stops. The crime rate in the Onkaparinga LGA is higher than average at 11,396 incidents per 100,000 population.

From an investment perspective, Seaford offers a gross rental yield of 3.2%, rated as moderate yield. Property prices are near the state median ($924K/$950K). The price-to-income ratio of 14.2x is considered stretched. House prices have moved +15.5% year-on-year.

INVESTMENT SIGNALS
Rental Yield3.2% Moderate Yield
Price vs State$924K/$950K Near Median
Affordability14.2x Stretched
Price Momentum+15.5% Rising
INCOME (ATO 2022-23)
Median Income$56,743
Mean Income$61,865
Earners8,900
YoY Change+5.7%
SEIFA INDEX (ABS)
Advantage3/10
Education3/10
Economic3/10
Disadvantage3/10
MEDIAN HOUSE
$924K
15.5% YoY
MEDIAN UNIT
$547K
16.5% YoY
MEDIAN RENT /WK
$330
POPULATION
4,493
DEMOGRAPHICS
Median Age43
Household Size2.3
HH Income /wk$1,254
Personal Income /wk$656
Mortgage /mth$1,400
CRIME (Onkaparinga LGA)
Crime Rate (per 100k)11,396
Total Incidents512
TRANSPORT
Rail Stations1
Bus Stops36
Seaford Railway Station
SCHOOLS (3)
Avg ICSEA999
Total Students1,734
Government2
Catholic1
Seaford Secondary CollegeSecondary · Government · ICSEA 962
All Saints Catholic Primary SchoolPrimary · Catholic · ICSEA 1017
Moana Primary SchoolPrimary · Government · ICSEA 1018
Data: 2025-Q4