2,981 ▲ +12.7%
Higher than 84% of suburb / locality areas.
- 2011: 2,646
- 2016: 2,755
- 2021: 2,981
The number of people who usually live in the area, counted on Census night.
Williamstown · Suburb / Locality
Demographics & Identity in Williamstown
Who lives here — how many people, how old they are, and how communities identify.
A mix of families and older adults shapes daily life in Williamstown, where 2,981 people live. The typical resident is 42, making the area noticeably older than the national figure. While it is larger than most similar areas, it has a distinct balance of age groups across the landscape.
2,981
▲ +12.7%
- 1–1: 689 areas
- 1–2: 0 areas
- 2–3: 119 areas
- 3–5: 108 areas
- 5–7: 243 areas
- 7–11: 241 areas
- 11–16: 514 areas
- 16–24: 579 areas
- 24–36: 898 areas
- 36–53: 1059 areas
- 53–79: 1168 areas
- 79–117: 1203 areas
- 117–174: 1171 areas
- 174–258: 1010 areas
- 258–384: 856 areas
- 384–571: 670 areas
- 571–850: 616 areas
- 850–1,263: 567 areas
- 1,263–1,879: 520 areas
- 1,879–2,794: 590 areas
- 2,794–4,154: 679 areas
- 4,154–6,177: 585 areas
- 6,177–9,186: 528 areas
- 9,186–13,659: 405 areas
- 13,659–20,311: 195 areas
- 20,311–30,202: 96 areas
- 30,202–44,910: 33 areas
- 44,910–66,781: 10 areas
All suburb / locality areas, 2021. The marker is Williamstown — higher than 84% of areas.
| Williamstown | 2,981 |
|---|---|
| 5351, SA | 6,195 |
| South Australia | 1,781,516 |
| Australia | 25,422,788 |
Population
How many people, and the typical age.
The population is larger than about 84% of similar areas. Residents here are a little older than the South Australian typical age of 41, and noticeably older than the Australian average of 38.
42 yrs ▲ +10.5%
Younger than 62% of suburb / locality areas.
- 2011: 38 yrs
- 2016: 40 yrs
- 2021: 42 yrs
Half the population is older than this age, and half younger.
Age profile
How the population splits across age groups.
Children under 15 make up 19.9% of the population, which is higher than most areas and the national figure. This helps explain why the proportion of seniors is well below the South Australian average, at just 16.5%.
16.5% ▲ +51.8%
Lower than 60% of suburb / locality areas.
- 2011: 10.9%
- 2016: 14.7%
- 2021: 16.5%
Share of the population aged 65 years and over.
19.9% ▼ -14.3%
Higher than 69% of suburb / locality areas.
- 2011: 23.2%
- 2016: 20.8%
- 2021: 19.9%
Share of the population aged under 15 years.
Age structure
View on map →In Williamstown, the largest group is Older adults (45–64) at 30%, followed by Young adults (25–44) (22%) and Children (0–14) (20%).
Identity & relationships
First Nations identity and marital status.
About 1.3% of residents identify as Aboriginal and Torres Strait Islander, which is a little below the state and national figures. Most people are married (54.7%), while those in de facto relationships sit at 11.9%, about the same as the national average.
1.3% ▲ +87.5%
Lower than 57% of suburb / locality areas.
- 2011: 0.7%
- 2016: 0.7%
- 2021: 1.3%
Share of people who identify as Aboriginal and/or Torres Strait Islander.
11.9% ▲ +3.1%
Lower than 53% of suburb / locality areas.
- 2011: 11.5%
- 2016: 11.9%
- 2021: 11.9%
Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).
Marital status
View on map →In Williamstown, Married is the majority at 55%; Never married is next at 30%.
Age & sex structure
Sources
- Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).
More for Williamstown
Cite this page
Australian Bureau of Statistics. (2021). Demographics & Identity in Williamstown [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sal/SAL41602/williamstown/topic/demographics-identity