Garden Island at a glance
Walk score
22
Very car dependent
Population
4
Median age 64
The brief
What to know about Garden Island.
The postcode for Garden Island is 5015 (SA), part of Greater Adelaide.
Garden Island (5015) sits in the Port Adelaide - West region of South Australia.
Garden Island has roughly 4 residents, with a retiree-heavy demographic. Households are predominantly owner-occupied. Daily life is car-dependent: most residents drive to work, school and the shops.
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Day to day
What it’s like to live here.
Garden Island scores 22/100 on walkability, which makes it car-dependent with limited public transport. Plan for two cars in a typical household, especially if work isn't local.
Summer days here average around 28°C (warm), winter mornings around 7°C (cool). Annual rainfall lands at about 448mm. Data comes from the Bureau of Meteorology's Adelaide (Kent Town) station, 11.1km away.
Schooling within or near the suburb covers 8 government primary, 2 government secondary, 6 Catholic, 2 independent.
Who lives here
Demographics.
The 2021 Census put Garden Island's population at 4, with a median age of 64. That sits as a retiree-heavy demographic. Households are predominantly owner-occupied (167% own, 0% rent), which shapes everything from school catchment stability to how often properties turn over. Lone-person households are notable here (167%), often a marker of unit-heavy stock and walkable infrastructure.
Population
4
Median age
64
Family households
–
Lone person
167%
Demographics data as of May 2026· ABS 2021 Census
Market
The price of a home here.
Median house price
Verified median pending
We don't yet have a verified suburb-level median for this market. We're working on a data partner; in the meantime, treat the state-level figures as a guide only. How we source data.
Rental and ownership
Weekly rent (house)
$315/wk
Weekly rent (unit)
$268/wk
Owner occupied
167%
Renter occupied
–
At a deeper level
4
Median age: 64
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Safety
Crime and safety.
1
total offences in 2025-26
Top offence categories
Crime statistics are reported at LGA level and may cover a broader area than this suburb.
Source: State Police Open Data
Crime data as of June 2026· State Police Open Data
Getting around
Walkability.
22
0
100
Scores calculated from OpenStreetMap data (ODbL)
Walkability data as of May 2026· OpenStreetMap
Place
Location.
Amenities
Transport
Education
Schools in Garden Island.
Local schools for Garden Island
View the catchment for each school to find out more.
Government School Catchment
Le Fevre Peninsula Primary School
Largs Bay School
Le Fevre High School
© ACARA, licensed under CC BY 4.0.
Climate
Weather year-round.
Annual Rainfall
448 mm
Hottest Month (avg max)
28.0°C
Coldest Month (avg min)
7.0°C
Monthly Rainfall (mm)
Weather data from BOM station Adelaide (Kent Town) (11 km away)
Climate data as of May 2026· Bureau of Meteorology
Frequently asked
About Garden Island.
- What is the Garden Island postcode?
- Garden Island is in the 5015 postcode, in SA, in the Port Adelaide - West region.
- Where is Garden Island?
- Garden Island is a suburb of Adelaide, in SA 5015. It is part of the Greater Adelaide area, in the Port Adelaide - West region.
- What is the average rent in Garden Island?
- The median weekly rent for houses is $315, for units it's $268.
- What schools are in Garden Island?
- There are 20 schools serving Garden Island on this page, including Le Fevre Peninsula Primary School, Largs Bay School, Dominican School.
- How walkable is Garden Island?
- Garden Island has a Walk Score of 22 out of 100, highly car-dependent. transit score 0, bike score 100.
- What suburbs are near Garden Island?
- Garden Island is close to Birkenhead, Torrens Island, Peterhead, Exeter, Port Adelaide.
- What is the population of Garden Island?
- The population of Garden Island is approximately 4 (2021 Census). The median age is 64.
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Surrounding Suburbs
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Sources cited
Median, growth and rental data from state revenue offices and ABS. Census from ABS 2021. Climate from BoM. Hazard from Geoscience Australia. School data from ACARA. Crime from state police open data. Full methodology →
Always dated
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