Duncan, SA
In 2026, police recorded 1 offences in Duncan, or 14.9 per 1,000 residents. That is 0.24× the SA rate.
Duncan has about 67 residents. Below 300, a few incidents swing the per-person rate wildly, so we show counts but don't rank it.
By crime type, 2026
Rates per 1,000 residents. ×-values compare with the state rate for the same offence type (SA suppresses sexual offences at suburb level).
Property & deception
14.9 / 1,000
SA 46.8
· National 49.7
View as table
| Group | Offence type | Count | Per 1,000 | SA per 1,000 |
|---|---|---|---|---|
| Property & deception | Serious Criminal Trespass | 1 | 14.93 | 6.76 |
Trend
Recorded offences per year. Projection is a simple linear trend, not a forecast of individual risk.
Vs state & national
per 1,000 residentsNearby suburbs
Housing, rent and growth
Housing & rent
ABS Census 2021Median rent is 8% of median household income. Below the 30% stress benchmark
| Measure | Value | vs other SA suburbs |
|---|---|---|
| Median rent | $158/week | higher than 20% |
| Median household income | $1,875/week | higher than 76% |
| Rent as a share of income | 8% | higher than 11% |
| Median mortgage repayment | $550/month | higher than 5% |
| Homes that are rented | 19% | higher than 56% |
| Owned outright | 29% | higher than 18% |
| Social housing | 0% | higher than 29% |
| Average household size | 2.5 people | higher than 54% |
2021 Census figures: rents and incomes have risen since, so compare suburbs rather than reading today's prices. The rent share uses the median rent and the median income of all households (owners included), so it is a guide, not the share any one renter pays. The 30% benchmark is a common convention.
Growth & new homes
ABS Regional Population · Building Approvals| Measure | Value | vs other SA areas |
|---|---|---|
| Population growth, 5 years 2020–2025 | +5.8% | higher than 63% |
| Population growth, last year 2024–2025 | +0.8% | higher than 56% |
| New homes approved, 12 months 12 months to Aug 2026 | 48 | higher than 51% |
| New homes approved per 1,000 residents 12 months to Aug 2026 | 9.2 | higher than 74% |
ABS publishes these for larger areas: figures are for “Kangaroo Island”, which contains this suburb. Approvals are dwellings approved, not yet built. Growth and new supply are change indicators, not a price forecast.
Common questions about Duncan
What is the crime rate in Duncan?
In 2026, 1 offences were recorded in Duncan, or 14.9 per 1,000 residents. That is 0.2× the SA rate of 61.5.
Where does this data come from?
Official recorded-crime statistics published by state police and crime statistics agencies, divided by 2021 Census or ABS population estimates. See the methodology page for details.
Data notes
- Population is estimated (medium confidence) from the ABS 2021 Census.
- Recorded crime counts offences reported to or detected by police where they occurred. That includes offences against visitors and businesses, so busy centres score higher than their resident risk.
- States classify offences differently, so ranks compare areas within the same state.
- sexual offences excluded / geo-masked at suburb level (SAPOL privacy)