Median elevation
6 m
range 0–14 m
For state-level context, explore the South Australia economy.
Housing
Garden Island
South Australia · Census 2021
Median house price not tracked for this suburb
Garden Island (SA) is a coastal suburb of Unincorporated SA.
Median house price
No Valuer-General median for Garden Island (SA).
South Australia's open Valuer-General suburb median feed covers metropolitan Adelaide only. We have no median for Garden Island (SA) from this feed. ABS median established-house price, Greater Adelaide: $980k; Rest of SA: $595k.
How it compares
Household income / wk6th percentile
<$450ABS Census 2021$3,749+
Household income / wk
SA · AU
SA median suburb $1,447 · AU median suburb $1,562Garden Island (SA) $749
Percentiles rank this suburb against South Australia suburbs that carry the metric — never across states, and never against suburbs where it is missing. Price references are ABS median established-house transfer prices for the Mar 2026 quarter (CC BY 4.0); the suburb figure is a Valuer-General median over a different window, so read the gap as indicative. Income references are the Census 2021 median of the middle suburb in South Australia and nationally, not a household-weighted median.
People & housing
Population
4
Median age
64 yrs
Income / person / wk
$450
Household income / wk
$749
▼ 48% vs SA
Housing stock
3 occupied private dwellings
ABS Census 2021 (CC BY 4.0). Withheld for very small populations — under 100 residents, or under 50 dwellings, households or workers for the shares that count those.
Terrain & hazard exposure
Land below 5 m
38%
22% below 2 m
Shares are the proportion of the suburb's land area; where part of a suburb is unmapped, only its mapped land counts, so the share is a floor. Land where Landsat saw water in at least 1% of clear passes since 1987, excluding permanent water and filtered by DEA's confidence layer. Satellites miss flood peaks, so this is a floor, not a risk estimate; dense high-rise cores can still register tower shadow as water. A statutory planning-control boundary, not a flood extent, and it can lag the latest flood study. Covers the Code's Hazards (Flooding) and (Flooding – General) overlays. Land under its precautionary Evidence Required overlay has not been assessed; a suburb mostly under it is shown as no statutory layer. Designated for development control; a designation, not a prediction of fire behaviour. Covers the Code's High, Medium, General and Urban Interface bushfire overlays. Land under its precautionary Regional and Outback overlays has not been assessed and is shown as no statutory layer. Elevation is orthometric height from a 30 m model; no hydrology or drainage is modelled.
Planning & zoning
Zoning mix (share of the suburb's land)
Show on map →- Open space & recreation64%
- Conservation35%
- Infrastructure & special purpose0.1%
- Waterways0.1%
In a heritage area
0%
conservation area / Heritage Overlay
Show on map →Listed heritage places
0
local & State places in the Code
Planning instrument: Planning and Design Code. Zones are grouped into ten families so states compare; the council's own scheme is the authority for any one lot. Listed-place counts follow each state's own list, so they do not compare across states. Source: SA Planning and Design Code zones; SA Code heritage & character overlays.
Schools by sector
- Nearest secondary
- 3.3 km
School sector & type: ACARA (Australian Curriculum, Assessment and Reporting Authority), School Location dataset.
Local council
- Council (LGA)
- Unincorporated SA
- Population
- 3,001 (2025) · -1.0% in a year
- Area / density
- 619,426 km² · 0/km²
- Council medians (2021)
- age 42 · $1,105/wk household income · $90/wk rent
- Council-wide house median (2023-24)
- $68k
- Federal grants
- $2.10M in 2025-26 · $701/resident
Council boundaries and the suburb split: ABS ASGS LGA 2024, allocated by 2021 mesh block and weighted by Census 2021 residents. Population: ABS Estimated Resident Population 2025. Medians: ABS Census 2021. House median: ABS Data by Region, established-house transfers across the whole council, financial year 2023-24. Federal grants: Financial Assistance Grants, Dept of Infrastructure. ABS and Dept of Infrastructure data CC BY 4.0.
Representation
- Federal division
- Hindmarsh
- Federal MP
- Mark Butler (ALP)
- Two-party-preferred
- Labor 66% 2PP
- State electorate
- Port Adelaide
- State MP
- Susan Close (ALP)
Similar suburbs
Closest demographic & amenity profile, nationally.
Sources: ABS ASGS boundaries (CC BY 4.0); ABS Census 2021 (CC BY 4.0); Australian Electoral Commission (CC BY 4.0); Geoscience Australia 1 Second DEM-S (CC BY 4.0); DEA Water Observations Statistics, Geoscience Australia (CC BY 4.0); Planning and Design Code overlays (Hazards — Flooding, and Flooding — General), Government of South Australia (CC BY 3.0 AU); Planning and Design Code overlays (Hazards — Bushfire), Government of South Australia (CC BY 3.0 AU); Planning and Design Code Zones, Government of South Australia (PlanSA) (CC BY 3.0 AU); Planning and Design Code Overlays (heritage and character), Government of South Australia (PlanSA) (CC BY 3.0 AU); Wikipedia state-member tables (CC BY-SA 4.0). Not financial advice.