400,997 ▲ +32.1%
Higher than 83% of region (sa4) areas.
- 2011: 303,528
- 2016: 339,637
- 2021: 400,997
The number of people who usually live in the area, counted on Census night.
Sydney - Blacktown · Region (SA4)
Demographics & Identity in Sydney - Blacktown
Who lives here — how many people, how old they are, and how communities identify.
About 97,000 more people have moved to Sydney - Blacktown since 2011, causing the population to grow by 32%. It is a noticeably young area where the typical resident is 34, which is five years younger than the New South Wales average.
400,997
▲ +32.1%
- 1–2: 3 areas
- 2–3: 0 areas
- 3–4: 0 areas
- 4–7: 0 areas
- 7–11: 1 area
- 11–19: 1 area
- 19–30: 1 area
- 30–50: 1 area
- 50–81: 0 areas
- 81–132: 1 area
- 132–214: 1 area
- 214–349: 0 areas
- 349–569: 1 area
- 569–927: 1 area
- 927–1,511: 1 area
- 1,511–2,461: 0 areas
- 2,461–4,010: 2 areas
- 4,010–6,532: 1 area
- 6,532–10,641: 2 areas
- 10,641–17,336: 2 areas
- 17,336–28,242: 0 areas
- 28,242–46,009: 1 area
- 46,009–74,953: 0 areas
- 74,953–122,107: 9 areas
- 122,107–198,924: 21 areas
- 198,924–324,066: 28 areas
- 324,066–527,936: 21 areas
- 527,936–860,060: 8 areas
All region (sa4) areas, 2021. The marker is Sydney - Blacktown — higher than 83% of areas.
| Sydney - Blacktown | 400,997 |
|---|---|
| Greater Sydney | 5,231,147 |
| New South Wales | 8,072,163 |
| Australia | 25,422,788 |
Population
How many people, and the typical age.
The total population reached 400,997 people in 2021, making it larger than about 84% of similar areas. While the typical age rose by two years since 2011, it remains much lower than most other areas.
34 yrs ▲ +6.3%
Younger than 99% of region (sa4) areas.
- 2011: 32 yrs
- 2016: 33 yrs
- 2021: 34 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 22.7% of the population, which is well above the national figure of 18.2%. In contrast, seniors aged 65 and over are much less common here than in most areas, sitting well below the state average at 11.0%.
11.0% ▲ +22.3%
Lower than 87% of region (sa4) areas.
- 2011: 9.0%
- 2016: 10.3%
- 2021: 11.0%
Share of the population aged 65 years and over.
22.7% ▼ -4.3%
Higher than 99% of region (sa4) areas.
- 2011: 23.7%
- 2016: 22.8%
- 2021: 22.7%
Share of the population aged under 15 years.
Age structure
View on map →In Sydney - Blacktown, the largest group is Young adults (25–44) at 32%, followed by Children (0–14) (23%) and Older adults (45–64) (21%).
Identity & relationships
First Nations identity and marital status.
Aboriginal and Torres Strait Islander people make up 3.0% of the population, which is about the same as the national figure. Those in de facto relationships account for 6.8%, a figure that is well below both the state and national averages.
3.0% ▲ +9.1%
Lower than 53% of region (sa4) areas.
- 2011: 2.7%
- 2016: 2.8%
- 2021: 3.0%
Share of people who identify as Aboriginal and/or Torres Strait Islander.
6.8% ▲ +11.7%
Lower than 96% of region (sa4) areas.
- 2011: 6.1%
- 2016: 6.6%
- 2021: 6.8%
Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).
Marital status
View on map →In Sydney - Blacktown, Married is the majority at 53%; Never married is next at 34%.
Age & sex structure
Sources
- Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).
More for Sydney - Blacktown
Cite this page
Australian Bureau of Statistics. (2021). Demographics & Identity in Sydney - Blacktown [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sa4/116/sydney-blacktown/topic/demographics-identity