Duncan
SADuncan is a growing suburb in SA with 67 residents.
- SAL code
- 40380
- SA2
- 407011145
- Population
- 67
- LGA
- Kangaroo Island
Duncan, SA had 67 residents at the 2021 Census, with the broader statistical area showing a 5.8% growth over the last five years. The predominant age group is 25-34 years, and the median age sits at 32. Households are most often couples with children, and those with a mortgage repay a median of $550 a month. Around 77.7% of homes are owner-occupied, with the largest single tenure being owned with a mortgage at 44.4%. Most dwellings are separate houses, making up 100.0% of the suburb's housing stock. The suburb has 7 parks and reserves mapped within its boundary. Source: ABS Census 2021 and Estimated Resident Population, with amenity counts from state Open Data and OpenStreetMap.
Population
?67
Suburb · Census 2021
5-Year Growth
+5.8%
3yr: +2.5% · 10yr: +9.5%
SA2 · 5yr
Household Income
$1,875/wk
Suburb · Census 2021 median
Median Age
32
Suburb · Census 2021
Socio-Economic Index
?4/10
SA2 · middle-range
Unemployment
?2.0%
SA4 · Q4 2025
Hospitals
No data for this suburb
Childcare services
No data for this suburb
Parks & green space
?7
Parks, reserves
Transport stops
No data for this suburb
Dwelling approvals
?2
Kangaroo Island · Feb 2026
Median Weekly Rent
Based on rental bond lodgements recorded by the state government.
Median House Sale Price
state Valuer-General sale price data not yet loaded for SA
Safety & Crime
2023 Q3Reported incidents from SA police. Offence rates may not reflect all crime.
Population over time — Kangaroo Island (SA2)
ABS publishes annual estimates only at SA2; Duncan suburb alone is ~67 (Census 2021).
Growth at a Glance
Population grew from 4,227 to 5,212 over 24 years, averaging 0.9% per year.
Government school catchment
Catchment data is not yet available for SA.
Source when available: SA Department for Education — School Zones (primary + high).
Profile
Census snapshot
Housing
Almost entirely detached houses (100%), owner-occupied (78%).
Dwelling mix
Tenure
Number of bedrooms
Bushfire & flood risk
Bushfire
Source: SA DHUD Bushfire Protection Areas
As of May 2026
Flood
Source: SA DEW Flood Mapping
As of May 2026
Overlap is the percentage of the suburb's land area inside the mapped hazard polygons. Always verify the exact property address with the relevant authority before making decisions.
Planning zones
1 zone in suburb| Code | Zone | % covered | Area |
|---|---|---|---|
| RURAL | RuralRural | 100.0% | 173.57 km² |
Source: SA Planning and Design Code Zones (ZONE_SA/2026-04-30/7965b1556505eb71) · As of Apr 2026. Zone boundaries are amended periodically; verify the exact property with the relevant council before relying on permitted use.