Port Willunga SA

Postcode 5173 · Onkaparinga LGA

Port Willunga is a small community in South Australia within the Onkaparinga local government area (postcode 5173). With a population of 1,785, the suburb has an established demographic with a median age of 44. Households earn a median income of $68K 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 Port Willunga is $1.1 million, having surged 45.7% over the past year. The current median weekly rent is $521. This gives a gross rental yield of approximately 2.5%. The median monthly mortgage repayment is $1,300.

Public transport access includes 14 bus stops. The crime rate in the Onkaparinga LGA is below average at 3,473 incidents per 100,000 population.

From an investment perspective, Port Willunga offers a gross rental yield of 2.5%, rated as low yield. Property prices are near the state median ($1.1M/$950K). The price-to-income ratio of 16.1x is considered stretched. House prices have moved +45.7% year-on-year.

INVESTMENT SIGNALS
Rental Yield2.5% Low Yield
Price vs State$1.1M/$950K Near Median
Affordability16.1x Stretched
Price Momentum+45.7% Rising
SEIFA INDEX (ABS)
Advantage3/10
Education4/10
Economic3/10
Disadvantage3/10
MEDIAN HOUSE
$1.1M
45.7% YoY
MEDIAN RENT /WK
$328
POPULATION
1,785
DEMOGRAPHICS
Median Age44
Household Size2.3
HH Income /wk$1,313
Personal Income /wk$690
Mortgage /mth$1,300
CRIME (Onkaparinga LGA)
Crime Rate (per 100k)3,473
Total Incidents62
TRANSPORT
Bus Stops14
Data: 2025-Q4