Garden Island, SA 5015
Port Adelaide - WestAll suburbs in postcode 5015
Updated
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.
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Rent in Garden Island
Rental data as of October 2026
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What to know about Garden Island
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.
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 30°C (warm), winter mornings around 7°C (cool). Annual rainfall lands at about 401 mm. Figures are our 1991 to 2020 averages of SILO data for this location (Queensland Government, built from Bureau of Meteorology observations).
Schooling within or near the suburb covers 8 government primary, 2 government secondary, 6 Catholic, 2 independent.
Schools in Garden Island
Location
Walkability
- Walk
- 22/100
- Transit
- 0/100
- Bike
- 100/100
Very car dependent. Scores out of 100, calculated from OpenStreetMap data (ODbL).
Walkability data as of May 2026· OpenStreetMap
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
- Lone person
- 167%
- Owner occupied
- 167%
Demographics data as of May 2026· ABS 2021 Census
Crime and safety
1 offences recorded in 2025-26
Top offence categories
Source: State Police Open Data
Crime data as of June 2026
Weather year-round
- Annual rainfall
- 401 mm
- Hottest month, avg max
- 29.5°C
- Coldest month, avg min
- 7.1°C
Rainfall by month
Our 1991 to 2020 averages of SILO data (Queensland Government, built from Bureau of Meteorology observations, CC BY 4.0) for this location.
Climate data as of October 2026· SILO (Queensland Government), from Bureau of Meteorology observations
Questions 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 in the Port Adelaide - West area, SA 5015.
- 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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Sources. House and unit medians from the NSW Valuer General, Land Victoria, the SA Government and the ABS; rents from the state rental bond authorities. Census from the ABS (2021), climate from the Bureau of Meteorology, hazard from Geoscience Australia, schools from ACARA and crime from state police open data. Each figure carries its source and date. How we source data
How we’re paid. The guides and this page are free. When a seller asks, we introduce one local agent, and the agent pays us a flat fee for the introduction, never a share of their commission; it costs the seller nothing. If a figure looks wrong, tell us and we’ll fix it.