Willunga South SA

Postcode 5172 · Onkaparinga LGA

Willunga South is a quiet locality in South Australia within the Onkaparinga local government area (postcode 5172). With a population of 470, the suburb has a mature demographic with a median age of 48. Households earn a median income of $103K per year, with an average household size of 2.7 people. The most common occupations are professionals, technicians & trades, community & personal service. The top ancestries reported are English, Australian, Scottish.

The median house price in Willunga South is $2.7 million, having remained flat 0% over the past year. The median weekly rent is $275 (Census 2021). This gives a gross rental yield of approximately 0.5%. The median monthly mortgage repayment is $1,733.

The crime rate in the Onkaparinga LGA is below average at 2,979 incidents per 100,000 population.

From an investment perspective, Willunga South offers a gross rental yield of 0.5%, rated as low yield. Property prices are above the state median ($2.7M/$950K), placing it in the premium segment. The price-to-income ratio of 26.4x is considered stretched. House prices have moved +0.0% year-on-year.

INVESTMENT SIGNALS
Rental Yield0.5% Low Yield
Price vs State$2.7M/$950K Above Median
Affordability26.4x Stretched
Price Momentum+0.0% Stable
SEIFA INDEX (ABS)
Advantage9/10
Education8/10
Economic9/10
Disadvantage8/10
MEDIAN HOUSE
$2.7M
0% YoY
MEDIAN RENT /WK
$275
POPULATION
470
DEMOGRAPHICS
Median Age48
Household Size2.7
HH Income /wk$1,983
Personal Income /wk$776
Mortgage /mth$1,733
CRIME (Onkaparinga LGA)
Crime Rate (per 100k)2,979
Total Incidents14
Data: 2025-Q3