Baulkham Hills · Suburb / Locality

Demographics & Identity in Baulkham Hills

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

Well over 21% of the 37,415 people in Baulkham Hills are children, a figure far higher than the national average. This creates a family-focused atmosphere where the typical resident is 39 years old. While it is one of the largest areas in the region, it has a notably younger age profile than many similar suburbs.

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📍 Baulkham Hills, Suburb / Locality

Where Baulkham Hills sits — Total population

37,415 ▲ +10.2%
  • 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 Baulkham Hills — higher than 93% of areas.

Total population compared with the state and national average
Baulkham Hills37,415
2153, NSW 62,610
New South Wales 8,072,163
Australia 25,422,788

Population

How many people, and the typical age.

The total population of Baulkham Hills is 37,415, making it one of the largest areas at this level. The typical resident is 39 years old, which is about the same as the New South Wales figure.

37,415 ▲ +10.2%

Higher than 93% of suburb / locality areas.

  • 2011: 33,945
  • 2016: 37,050
  • 2021: 37,415

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

39 yrs ▲ +5.4%

Younger than 74% of suburb / locality areas.

  • 2011: 37 yrs
  • 2016: 38 yrs
  • 2021: 39 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 21.7% of the population, which is well above the national figure of 18.2%. This high number of young people helps explain why those aged 65 and over (16.2%) are fewer than in most other areas.

16.2% ▲ +25.3%

Lower than 62% of suburb / locality areas.

  • 2011: 12.9%
  • 2016: 15.1%
  • 2021: 16.2%

Share of the population aged 65 years and over.

21.7% ▲ +0.8%

Higher than 78% of suburb / locality areas.

  • 2011: 21.5%
  • 2016: 21.6%
  • 2021: 21.7%

Share of the population aged under 15 years.

Age structure

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Baulkham Hills splits fairly evenly between Young adults (25–44) (27%) and Older adults (45–64) (24%), with Children (0–14) at 22%.

Identity & relationships

First Nations identity and marital status.

Married couples make up 60.5% of the population, while people in de facto relationships (5.6%) are well below the New South Wales average of 10.6%. Aboriginal and Torres Strait Islander people make up 0.6% of the area, which is a little below the national figure.

5.6% ▲ +9.8%

Lower than 88% of suburb / locality areas.

  • 2011: 5.1%
  • 2016: 5.4%
  • 2021: 5.6%

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

Marital status

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In Baulkham Hills, Married is the majority at 61%; Never married is next at 27%.

Age & sex structure

  • 85+: 85+: 285 males; 85+: 409 females
  • 80–84: 80–84: 372 males; 80–84: 419 females
  • 75–79: 75–79: 589 males; 75–79: 603 females
  • 70–74: 70–74: 753 males; 70–74: 955 females
  • 65–69: 65–69: 764 males; 65–69: 907 females
  • 60–64: 60–64: 864 males; 60–64: 950 females
  • 55–59: 55–59: 1,052 males; 55–59: 1,015 females
  • 50–54: 50–54: 1,171 males; 50–54: 1,203 females
  • 45–49: 45–49: 1,389 males; 45–49: 1,401 females
  • 40–44: 40–44: 1,672 males; 40–44: 1,613 females
  • 35–39: 35–39: 1,514 males; 35–39: 1,772 females
  • 30–34: 30–34: 945 males; 30–34: 1,136 females
  • 25–29: 25–29: 741 males; 25–29: 747 females
  • 20–24: 20–24: 1,017 males; 20–24: 834 females
  • 15–19: 15–19: 1,149 males; 15–19: 1,074 females
  • 10–14: 10–14: 1,458 males; 10–14: 1,318 females
  • 5–9: 5–9: 1,616 males; 5–9: 1,495 females
  • 0–4: 0–4: 1,129 males; 0–4: 1,087 females

Sources

  • Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).

More for Baulkham Hills

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Baulkham Hills [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sal/SAL10233/baulkham-hills/topic/demographics-identity