Australian Demographic Profile
Williamstown (SA), SA 5351
Census-grade demographic profile. ABS Census 2021, adjusted to 2026.
Population
~2,954
Median age
42
Median income
Mid-high
$800-$999/wk
Top profile
Retired
24%
Profile composition (top three)
- Retired and semi-retired24%
- Established partnered households21%
- Trades and technical workers19%
Full 8-profile breakdown in the suburb report.
Population overview
- Synthetic individuals
- ~2,954
- Sex split
- F 51% / M 49%
- Tertiary-qualified
- 20%
Generated from ABS Census 2021 conditionals using Bayesian reconstruction, adjusted to 2026.
Age structure
- Children (0-14)20%
- Young adults (15-24)12%
- Early career (25-39)18%
- Mid career (40-59)27%
- Senior (60+)24%
Income distribution
Median individual income bracket in Williamstown (SA): Mid-high ($800-$999/wk).
- No / not stated29%
- Low ($1-$499/wk)20%
- Mid ($500-$1.5k)36%
- High ($1.5k-$3k)15%
- Very high ($3k+)1.3%
Top occupations
- Technicians and Trades Workers19%
- Professionals16%
- Managers13%
Full occupation breakdown in the suburb report.
Compared to SA and Australia
| Williamstown (SA) | SA avg | AUS avg | |
|---|---|---|---|
| Median age | 42 | 42 | 42 |
| Tertiary-qualified | 20% | 20% | 19% |
What's in the full report
- ✓ Full 8-profile composition with percentages
- ✓ All 47 demographic variables broken down
- ✓ Income vs occupation cross-tabulation
- ✓ Family composition by age group
- ✓ Country of birth and language distributions
- ✓ Educational attainment by age cohort
- ✓ Branded HTML, PDF, CSV exports
- ✓ Citation-ready format
Nearby suburbs
Explore demographics for areas close to Williamstown (SA):
Methodology
Generated from ABS Census 2021 conditional tables using Bayesian reconstruction. Validated against real Census distributions with a median person-level SRMSE of 0.05 across 7,780 suburbs. Read the full methodology →