Census comparison · 2011 · 2016 · 2021
Lock then and now
Side-by-side ABS Census comparison for Lock, SA (postcode 5633) — how the suburb looked across Census years from 2011 to 2021.
Population
Census 2011 → 2016 → 2021
-17.6% over 10 years
| Metric | 2011 | 2016 | 2021 | Change (→2021) |
|---|---|---|---|---|
| Population | 307 | 276 | 253 | -54 · -17.6% |
| Median age | 43 | 45 | 38 | -5 · -11.6% |
| Median household income | $900/wk | $1,010/wk | $1,125/wk | +$225 · +25% |
| Median personal income | $515/wk | $543/wk | $729/wk | +$214 · +41.6% |
| Median rent | $50/wk | $91/wk | $120/wk | +$70 · +140% |
| Median mortgage | $465/mo | $293/mo | $512/mo | +$47 · +10.1% |
| Average household size | 2.6 | 2.3 | 2.2 | -0.4 · -15.4% |
Change is measured from the earliest available Census year to 2021 for each metric.
Lock trends (2016 → 2021)
Change since the previous Census. Historical figures are mapped from State Suburbs (SSC) to today's suburb boundaries.
Population
253
was 276 in 2016
-23 · -8.3%
Median rent
$120/wk
was $91/wk in 2016
+$29 · +31.9%
Household income
$1,125/wk
was $1,010/wk in 2016
+$115 · +11.4%
Median age
38
was 45 in 2016
-7 · -15.6%
Dig deeper: Lock population growth · Lock then and now
2011 and 2016 values are mapped from State Suburbs (SSC) to 2021 suburb boundaries — see methodology.