Summertown SA

Postcode 5141 · Adelaide Hills LGA

Summertown is a small community in South Australia within the Adelaide Hills local government area (postcode 5141). With a population of 752, the suburb has an established demographic with a median age of 43. Households earn a median income of $117K per year, with an average household size of 2.9 people. The most common occupations are professionals, managers, clerical & administrative. The top ancestries reported are English, Australian, German.

The median house price in Summertown is $1.4 million, having increased 4.3% over the past year. The current median weekly rent is $825. This gives a gross rental yield of approximately 3.1%. The median monthly mortgage repayment is $2,167.

Public transport access includes 11 bus stops. The crime rate in the Adelaide Hills LGA is low at 665 incidents per 100,000 population.

From an investment perspective, Summertown offers a gross rental yield of 3.1%, rated as moderate yield. Property prices are above the state median ($1.4M/$950K), placing it in the premium segment. The price-to-income ratio of 11.7x is considered stretched. House prices have moved +4.3% year-on-year.

INVESTMENT SIGNALS
Rental Yield3.1% Moderate Yield
Price vs State$1.4M/$950K Above Median
Affordability11.7x Stretched
Price Momentum+4.3% Stable
SEIFA INDEX (ABS)
Advantage10/10
Education9/10
Economic10/10
Disadvantage10/10
MEDIAN HOUSE
$1.4M
4.3% YoY
MEDIAN RENT /WK
$365
POPULATION
752
DEMOGRAPHICS
Median Age43
Household Size2.9
HH Income /wk$2,258
Personal Income /wk$876
Mortgage /mth$2,167
CRIME (Adelaide Hills LGA)
Crime Rate (per 100k)665
Total Incidents5
TRANSPORT
Bus Stops11
Data: 2025-Q4