Census comparison · 2011 · 2016 · 2021
Williamstown then and now
Side-by-side ABS Census comparison for Williamstown, SA (postcode 5351) — how the suburb looked across Census years from 2011 to 2021.
Population
Census 2011 → 2016 → 2021
+12.7% over 10 years
| Metric | 2011 | 2016 | 2021 | Change (→2021) |
|---|---|---|---|---|
| Population | 2,646 | 2,755 | 2,981 | +335 · +12.7% |
| Median age | 38 | 40 | 42 | +4 · +10.5% |
| Median household income | $1,376/wk | $1,480/wk | $1,782/wk | +$406 · +29.5% |
| Median personal income | $570/wk | $654/wk | $813/wk | +$243 · +42.6% |
| Median rent | $195/wk | $280/wk | $300/wk | +$105 · +53.8% |
| Median mortgage | $1,521/mo | $1,517/mo | $1,500/mo | $21 · -1.4% |
| Average household size | 2.9 | 2.8 | 2.7 | -0.2 · -6.9% |
Change is measured from the earliest available Census year to 2021 for each metric.
Williamstown trends (2016 → 2021)
Change since the previous Census. Historical figures are mapped from State Suburbs (SSC) to today's suburb boundaries.
Population
2,981
was 2,755 in 2016
+226 · +8.2%
Median rent
$300/wk
was $280/wk in 2016
+$20 · +7.1%
Household income
$1,782/wk
was $1,480/wk in 2016
+$302 · +20.4%
Median age
42
was 40 in 2016
+2 · +5%
Dig deeper: Williamstown population growth · Williamstown then and now
2011 and 2016 values are mapped from State Suburbs (SSC) to 2021 suburb boundaries — see methodology.