Census comparison · 2011 · 2016 · 2021
Birnam then and now
Side-by-side ABS Census comparison for Birnam, QLD (postcode 4285) — how the suburb looked across Census years from 2011 to 2021.
Population
Census 2011 → 2016 → 2021
-1.8% over 10 years
| Metric | 2011 | 2016 | 2021 | Change (→2021) |
|---|---|---|---|---|
| Population | 111 | 106 | 109 | -2 · -1.8% |
| Median age | 43 | 45 | 44 | +1 · +2.3% |
| Median household income | $1,211/wk | $1,899/wk | $2,107/wk | +$896 · +74% |
| Median personal income | $531/wk | $858/wk | $844/wk | +$313 · +58.9% |
| Median rent | $194/wk | $460/wk | $490/wk | +$296 · +152.6% |
| Median mortgage | $1,592/mo | $2,000/mo | $2,134/mo | +$542 · +34% |
| Average household size | 2.7 | 2.4 | 2.9 | +0.2 · +7.4% |
Change is measured from the earliest available Census year to 2021 for each metric.
Birnam trends (2016 → 2021)
Change since the previous Census. Historical figures are mapped from State Suburbs (SSC) to today's suburb boundaries.
Population
109
was 106 in 2016
+3 · +2.8%
Median rent
$490/wk
was $460/wk in 2016
+$30 · +6.5%
Household income
$2,107/wk
was $1,899/wk in 2016
+$208 · +11%
Median age
44
was 45 in 2016
-1 · -2.2%
Dig deeper: Birnam population growth · Birnam then and now
2011 and 2016 values are mapped from State Suburbs (SSC) to 2021 suburb boundaries — see methodology.