Millbrook · Suburb / Locality

Demographics & Identity in Millbrook

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

Older adults aged 45 to 64 make up the largest group in Millbrook, where the typical resident is 50. This makes the area far older than the national figure. With a total population of 133 people, it is a small community with a distinct age profile.

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📍 Millbrook, Suburb / Locality

Where Millbrook sits — Total population

133
  • 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 Millbrook — lower than 54% of areas.

Total population compared with the state and national average
Millbrook133
5231, SA 1,284
South Australia 1,781,516
Australia 25,422,788

Population

How many people, and the typical age.

The typical resident here is 50 years old, which is far older than the typical person in South Australia and the rest of Australia.

133

Lower than 54% of suburb / locality areas.

  • 2016: 106
  • 2021: 133

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

50 yrs

Older than 71% of suburb / locality areas.

  • 2016: 45 yrs
  • 2021: 50 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 only 9.8% of the population, a figure well below both the state and national averages. Those aged 65 and over are also well below the national figure at 13.5%.

13.5%

Lower than 73% of suburb / locality areas.

  • 2016: 10.4%
  • 2021: 13.5%

Share of the population aged 65 years and over.

9.8%

Lower than 85% of suburb / locality areas.

  • 2016: 9.4%
  • 2021: 9.8%

Share of the population aged under 15 years.

Age structure

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In Millbrook, the largest group is Older adults (45–64) at 41%, followed by Young adults (25–44) (19%) and Youth (15–24) (15%).

Identity & relationships

First Nations identity and marital status.

Half of the residents are married, while only 6.1% are in a de facto relationship, which is much lower than most similar areas. No Aboriginal or Torres Strait Islander people live here, a figure well below the national average.

6.1%

Lower than 86% of suburb / locality areas.

  • 2016: 13.6%
  • 2021: 6.1%

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

Marital status

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In Millbrook, Married is the majority at 51%; Never married is next at 36%.

Age & sex structure

  • 85+: 85+: 0 males; 85+: 0 females
  • 80–84: 80–84: 0 males; 80–84: 0 females
  • 75–79: 75–79: 0 males; 75–79: 0 females
  • 70–74: 70–74: 3 males; 70–74: 3 females
  • 65–69: 65–69: 6 males; 65–69: 0 females
  • 60–64: 60–64: 5 males; 60–64: 9 females
  • 55–59: 55–59: 6 males; 55–59: 7 females
  • 50–54: 50–54: 16 males; 50–54: 11 females
  • 45–49: 45–49: 8 males; 45–49: 3 females
  • 40–44: 40–44: 6 males; 40–44: 5 females
  • 35–39: 35–39: 0 males; 35–39: 0 females
  • 30–34: 30–34: 4 males; 30–34: 0 females
  • 25–29: 25–29: 5 males; 25–29: 0 females
  • 20–24: 20–24: 0 males; 20–24: 7 females
  • 15–19: 15–19: 4 males; 15–19: 5 females
  • 10–14: 10–14: 8 males; 10–14: 6 females
  • 5–9: 5–9: 0 males; 5–9: 0 females
  • 0–4: 0–4: 0 males; 0–4: 0 females

Sources

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

More for Millbrook

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Millbrook [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sal/SAL40877/millbrook/topic/demographics-identity