Mount St John · Suburb / Locality

Demographics & Identity in Mount St John

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

Far fewer children live in Mount St John than in most similar areas, with none under the age of 15 recorded. The community is small, with just 103 people, and has a typical resident age of 42, which is noticeably older than the national figure.

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📍 Mount St John, Suburb / Locality

Where Mount St John sits — Total population

103
  • 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 Mount St John — lower than 58% of areas.

Total population compared with the state and national average
Mount St John103
4818, QLD 32,004
Queensland 5,156,138
Australia 25,422,788

Population

How many people, and the typical age.

The population of 103 people is smaller than about 58% of similar areas. Residents here are generally older than those in the rest of the state and country.

103

Lower than 58% of suburb / locality areas.

  • 2016: 62
  • 2021: 103

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

42 yrs

Younger than 62% of suburb / locality areas.

  • 2016: 57 yrs
  • 2021: 42 yrs

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

Age profile

How the population splits across age groups.

There are no children under 15, a figure far below the national average of 18.2%. Adults aged 45 to 64 make up the largest group at 28.2%, while seniors account for 16.5%, which is about the same as the Queensland figure.

16.5%

Lower than 60% of suburb / locality areas.

  • 2016: 24.2%
  • 2021: 16.5%

Share of the population aged 65 years and over.

0.0%

Lower than 99% of suburb / locality areas.

  • 2016: 0.0%
  • 2021: 0.0%

Share of the population aged under 15 years.

Age structure

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In Mount St John, the largest group is Older adults (45–64) at 33%, followed by Youth (15–24) (28%) and Young adults (25–44) (20%).

Identity & relationships

First Nations identity and marital status.

De facto relationships are much more common here than in most areas, at 19.4%, which is well above the national figure of 11.5%. No Aboriginal or Torres Strait Islander people live here, a rate well below the state and national averages.

19.4%

Higher than 87% of suburb / locality areas.

  • 2016: 5.9%
  • 2021: 19.4%

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

Marital status

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In Mount St John, Never married is the majority at 55%; Married is next at 19%.

Age & sex structure

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

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Mount St John [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sal/SAL32021/mount-st-john/topic/demographics-identity