South Plympton SA

Postcode 5038 · Marion LGA

South Plympton is a smaller suburb in South Australia within the Marion local government area (postcode 5038). With a population of 4,721, the suburb has a mix of young professionals and families with a median age of 37. Households earn a median income of $81K per year, with an average household size of 2.3 people. The most common occupations are professionals, community & personal service, clerical & administrative. The top ancestries reported are English, Australian, Chinese.

The median house price in South Plympton is $1.2 million, having surged 21.5% over the past year. The current median weekly rent is $572. This gives a gross rental yield of approximately 2.5%. The median monthly mortgage repayment is $1,700.

South Plympton is served by 2 schools, including 1 primary, 1 combined. The average ICSEA score is 1070, which is above the national average of 1,000. Public transport access includes 21 bus stops. The crime rate in the Marion LGA is moderate at 4,109 incidents per 100,000 population.

From an investment perspective, South Plympton offers a gross rental yield of 2.5%, rated as low yield. Property prices are near the state median ($1.2M/$950K). The price-to-income ratio of 14.9x is considered stretched. House prices have moved +21.5% year-on-year.

INVESTMENT SIGNALS
Rental Yield2.5% Low Yield
Price vs State$1.2M/$950K Near Median
Affordability14.9x Stretched
Price Momentum+21.5% Rising
SEIFA INDEX (ABS)
Advantage5/10
Education8/10
Economic2/10
Disadvantage6/10
MEDIAN HOUSE
$1.2M
21.5% YoY
MEDIAN RENT /WK
$340
POPULATION
4,721
DEMOGRAPHICS
Median Age37
Household Size2.3
HH Income /wk$1,552
Personal Income /wk$805
Mortgage /mth$1,700
CRIME (Marion LGA)
Crime Rate (per 100k)4,109
Total Incidents194
TRANSPORT
Bus Stops21
SCHOOLS (2)
Avg ICSEA1070
Total Students1,319
Independent1
Government1
Emmaus Christian CollegeCombined · Independent · ICSEA 1137
Forbes Primary SchoolPrimary · Government · ICSEA 1002
Data: 2025-Q4