Summer Hill · Suburb / Locality

Demographics & Identity in Summer Hill

Who lives here — how many people, how old they are, and how communities identify.

Noticeably younger residents define Summer Hill, where the typical age is 36 compared to 39 across New South Wales. With over 7,000 people, it is one of the largest areas of its kind in the region. The local population is skewed heavily toward working-age adults.

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📍 Summer Hill, Suburb / Locality

Where Summer Hill sits — Total population

7,288 —
  • 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 Summer Hill — higher than 87% of areas.

Total population compared with the state and national average
Summer Hill7,288
2130, NSW 7,288
New South Wales 8,072,163
Australia 25,422,788

Population

How many people, and the typical age.

The typical resident here is 36 years old, which is noticeably younger than the New South Wales figure of 39. With 7,288 people, it is among the largest areas at this level.

7,288 —

Higher than 87% of suburb / locality areas.

  • 2016: 7,311
  • 2021: 7,288

The number of people who usually live in the area, counted on Census night.

36 yrs —

Younger than 83% of suburb / locality areas.

  • 2016: 36 yrs
  • 2021: 36 yrs

Half the population is older than this age, and half younger.

Age profile

How the population splits across age groups.

Young adults aged 25 to 44 make up nearly 40% of the population. This helps explain why the area has a much lower share of children and seniors than both the state and national figures.

12.5% —

Lower than 76% of suburb / locality areas.

  • 2016: 10.8%
  • 2021: 12.5%

Share of the population aged 65 years and over.

13.8% —

Lower than 71% of suburb / locality areas.

  • 2016: 15.4%
  • 2021: 13.8%

Share of the population aged under 15 years.

Age structure

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In Summer Hill, the largest group is Young adults (25–44) at 40%, followed by Older adults (45–64) (24%) and Children (0–14) (14%).

Identity & relationships

First Nations identity and marital status.

A high number of people live in de facto relationships, at 20.1%, which is well above the 11.5% national figure. Those who have never married make up 52.5% of the population, while 0.8% identify as Aboriginal and Torres Strait Islander.

20.1% —

Higher than 88% of suburb / locality areas.

  • 2016: 15.9%
  • 2021: 20.1%

Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).

Marital status

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In Summer Hill, Never married is the majority at 52%; Married is next at 34%.

Age & sex structure

  • 85+: 85+: 53 males; 85+: 92 females
  • 80–84: 80–84: 32 males; 80–84: 58 females
  • 75–79: 75–79: 69 males; 75–79: 73 females
  • 70–74: 70–74: 119 males; 70–74: 130 females
  • 65–69: 65–69: 133 males; 65–69: 144 females
  • 60–64: 60–64: 171 males; 60–64: 173 females
  • 55–59: 55–59: 215 males; 55–59: 208 females
  • 50–54: 50–54: 207 males; 50–54: 232 females
  • 45–49: 45–49: 270 males; 45–49: 293 females
  • 40–44: 40–44: 249 males; 40–44: 297 females
  • 35–39: 35–39: 350 males; 35–39: 367 females
  • 30–34: 30–34: 396 males; 30–34: 447 females
  • 25–29: 25–29: 352 males; 25–29: 438 females
  • 20–24: 20–24: 196 males; 20–24: 272 females
  • 15–19: 15–19: 134 males; 15–19: 117 females
  • 10–14: 10–14: 152 males; 10–14: 173 females
  • 5–9: 5–9: 164 males; 5–9: 143 females
  • 0–4: 0–4: 178 males; 0–4: 197 females

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/sal/SAL13702/summer-hill/topic/demographics-identity