Census comparison · 2011 · 2016 · 2021
Duncan then and now
Side-by-side ABS Census comparison for Duncan, SA (postcode 5223) — how the suburb looked across Census years from 2011 to 2021.
Population
Census 2011 → 2016 → 2021
+45.7% over 10 years
| Metric | 2011 | 2016 | 2021 | Change (→2021) |
|---|---|---|---|---|
| Population | 46 | 66 | 67 | +21 · +45.7% |
| Median age | 38 | 33 | 32 | -6 · -15.8% |
| Median household income | $880/wk | $1,375/wk | $1,875/wk | +$995 · +113.1% |
| Median personal income | $539/wk | $560/wk | $1,017/wk | +$478 · +88.7% |
| Median rent | $113/wk | $50/wk | $158/wk | +$45 · +39.8% |
| Median mortgage | $1,300/mo | $900/mo | $550/mo | $750 · -57.7% |
| Average household size | 2.3 | 2.4 | 2.5 | +0.2 · +8.7% |
Change is measured from the earliest available Census year to 2021 for each metric.
Duncan trends (2016 → 2021)
Change since the previous Census. Historical figures are mapped from State Suburbs (SSC) to today's suburb boundaries.
Population
67
was 66 in 2016
+1 · +1.5%
Median rent
$158/wk
was $50/wk in 2016
+$108 · +216%
Household income
$1,875/wk
was $1,375/wk in 2016
+$500 · +36.4%
Median age
32
was 33 in 2016
-1 · -3%
Dig deeper: Duncan population growth · Duncan then and now
2011 and 2016 values are mapped from State Suburbs (SSC) to 2021 suburb boundaries — see methodology.