103,905 ▲ +31.9%
Higher than 92% of state electorate areas.
- 2011: 78,770
- 2016: 79,826
- 2021: 103,905
The number of people who usually live in the area, counted on Census night.
Castle Hill · State Electorate
Demographics & Identity in Castle Hill
Who lives here — how many people, how old they are, and how communities identify.
A population of 103,905 makes Castle Hill one of the largest areas at this level. The neighborhood is notably young, with a typical resident aged 37 and a high proportion of children under 15. This family-focused profile is clear in the local age structure, where children and young adults make up nearly half the population.
103,905
▲ +31.9%
- 1–2: 3 areas
- 2–2: 0 areas
- 2–4: 0 areas
- 4–5: 0 areas
- 5–8: 0 areas
- 8–13: 2 areas
- 13–19: 1 area
- 19–29: 0 areas
- 29–44: 1 area
- 44–68: 0 areas
- 68–103: 1 area
- 103–158: 0 areas
- 158–240: 1 area
- 240–366: 1 area
- 366–559: 1 area
- 559–852: 1 area
- 852–1,299: 0 areas
- 1,299–1,980: 1 area
- 1,980–3,018: 0 areas
- 3,018–4,602: 2 areas
- 4,602–7,016: 2 areas
- 7,016–10,696: 28 areas
- 10,696–16,307: 5 areas
- 16,307–24,861: 5 areas
- 24,861–37,902: 41 areas
- 37,902–57,783: 150 areas
- 57,783–88,095: 162 areas
- 88,095–134,306: 43 areas
All state electorate areas, 2021. The marker is Castle Hill — higher than 92% of areas.
| Castle Hill | 103,905 |
|---|---|
| Greater Sydney | 5,231,147 |
| New South Wales | 8,072,163 |
| Australia | 25,422,788 |
Population
How many people, and the typical age.
The area has grown quickly, adding about 25,135 people since 2011 for a total increase of 32%. Residents here are a little younger than the national figure.
37 yrs ▼ -2.6%
Younger than 64% of state electorate areas.
- 2011: 38 yrs
- 2016: 37 yrs
- 2021: 37 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 22.0% of the population, which is well above the national figure of 18.2%. Meanwhile, seniors aged 65 and over are much less common here than in most other areas, making up just 13.0%.
13.0% ▼ -8.4%
Lower than 76% of state electorate areas.
- 2011: 14.2%
- 2016: 12.5%
- 2021: 13.0%
Share of the population aged 65 years and over.
22.0% ▲ +26.1%
Higher than 87% of state electorate areas.
- 2011: 17.5%
- 2016: 22.2%
- 2021: 22.0%
Share of the population aged under 15 years.
Age structure
View on map →Castle Hill splits fairly evenly between Young adults (25–44) (27%) and Older adults (45–64) (25%), with Children (0–14) at 22%.
Identity & relationships
First Nations identity and marital status.
Married couples are the most common relationship status at 61.3%. People in de facto relationships make up 5.2% of the population, which is well below the national figure of 11.5%.
0.7% ▼ -3.0%
Lower than 85% of state electorate areas.
- 2011: 0.7%
- 2016: 0.5%
- 2021: 0.7%
Share of people who identify as Aboriginal and/or Torres Strait Islander.
5.2% ▼ -22.5%
Lower than 98% of state electorate areas.
- 2011: 6.7%
- 2016: 4.5%
- 2021: 5.2%
Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).
Marital status
View on map →In Castle Hill, Married is the majority at 61%; Never married is next at 28%.
Age & sex structure
Sources
- Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).
More for Castle Hill
Cite this page
Australian Bureau of Statistics. (2021). Demographics & Identity in Castle Hill [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sed/SED10016/castle-hill/topic/demographics-identity