81,026 ▲ +21.0%
Higher than 83% of state electorate areas.
- 2011: 66,991
- 2016: 81,050
- 2021: 81,026
The number of people who usually live in the area, counted on Census night.
Summer Hill · State Electorate
Demographics & Identity in Summer Hill
Who lives here — how many people, how old they are, and how communities identify.
Nearly half of the 81,026 people in Summer Hill have never been married, reflecting a strong trend toward single living or non-traditional partnerships. This area has grown significantly, adding about 14,035 people since 2011. It is now notably younger than it used to be, with the typical resident aged 37.
81,026
▲ +21.0%
- 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 Summer Hill — higher than 83% of areas.
| Summer Hill | 81,026 |
|---|---|
| Greater Sydney | 5,231,147 |
| New South Wales | 8,072,163 |
| Australia | 25,422,788 |
Population
How many people, and the typical age.
The population grew by 21% since 2011 to reach 81,026, making it larger than about 82% of similar areas. The typical resident is 37, which is a little younger than the national figure of 38.
37 yrs ▼ -15.9%
Younger than 64% of state electorate areas.
- 2011: 44 yrs
- 2016: 36 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 just 13.4% of the population, a figure well below the national average of 18.2%. Seniors aged 65 and over also represent a smaller share than usual at 15.4%, which is a little below the New South Wales figure.
15.4% ▼ -27.9%
Lower than 63% of state electorate areas.
- 2011: 21.3%
- 2016: 13.7%
- 2021: 15.4%
Share of the population aged 65 years and over.
13.4% ▼ -26.0%
Lower than 89% of state electorate areas.
- 2011: 18.1%
- 2016: 14.6%
- 2021: 13.4%
Share of the population aged under 15 years.
Age structure
View on map →In Summer Hill, the largest group is Young adults (25–44) at 36%, followed by Older adults (45–64) (24%) and Seniors (65+) (15%).
Identity & relationships
First Nations identity and marital status.
De facto relationships are much more common here than in most areas, at 15.8%, which is well above the national figure of 11.5%. Meanwhile, the Aboriginal and Torres Strait Islander population is 1.2%, a little below the New South Wales average.
1.2% ▼ -56.4%
Lower than 71% of state electorate areas.
- 2011: 2.7%
- 2016: 1.2%
- 2021: 1.2%
Share of people who identify as Aboriginal and/or Torres Strait Islander.
15.8% ▲ +88.6%
Higher than 88% of state electorate areas.
- 2011: 8.4%
- 2016: 13.1%
- 2021: 15.8%
Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).
Marital status
View on map →In Summer Hill, the largest group is Never married at 48%, followed by Married (37%) and Divorced (8%).
Age & sex structure
Sources
- Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).
More for Summer Hill
Cite this page
Australian Bureau of Statistics. (2021). Demographics & Identity in Summer Hill [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sed/SED10078/summer-hill/topic/demographics-identity