St Marys · Suburb / Locality

Demographics & Identity in St Marys

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

A typical resident in St Marys is 56, making the population far older than the national figure. This shift is seen in the daily life of the town, where seniors make up nearly 29% of the people living here. With a total population of 738, it is larger than most similar areas in the region.

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📍 St Marys, Suburb / Locality

Where St Marys sits — Total population

738 ▼ -7.8%
  • 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 St Marys — higher than 71% of areas.

Total population compared with the state and national average
St Marys738
7215, TAS 4,066
Tasmania 557,571
Australia 25,422,788

Population

How many people, and the typical age.

The typical person living here is 56 years old, which is far older than the average for Tasmania and Australia. This age profile is much higher than most similar areas.

738 ▼ -7.8%

Higher than 71% of suburb / locality areas.

  • 2011: 800
  • 2016: 682
  • 2021: 738

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

56 yrs ▲ +21.7%

Older than 87% of suburb / locality areas.

  • 2011: 46 yrs
  • 2016: 53 yrs
  • 2021: 56 yrs

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

Age profile

How the population splits across age groups.

Older adults and seniors dominate the town, with 28.7% of people aged 65 and over, a figure far above the national average. This helps explain why children under 15 make up only 12.1% of the population, which is well below the state and national figures.

28.7% ▲ +49.2%

Higher than 84% of suburb / locality areas.

  • 2011: 19.3%
  • 2016: 24.2%
  • 2021: 28.7%

Share of the population aged 65 years and over.

12.1% ▼ -38.2%

Lower than 77% of suburb / locality areas.

  • 2011: 19.5%
  • 2016: 14.5%
  • 2021: 12.1%

Share of the population aged under 15 years.

Age structure

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In St Marys, the largest group is Older adults (45–64) at 38%, followed by Seniors (65+) (29%) and Young adults (25–44) (14%).

Identity & relationships

First Nations identity and marital status.

About 3.5% of residents identify as Aboriginal or Torres Strait Islander, which is higher than most similar areas. Nearly half of the population is married, while 14.1% are in de facto relationships, a rate a little above the national figure.

14.1% ▼ -2.4%

Higher than 65% of suburb / locality areas.

  • 2011: 14.5%
  • 2016: 16.4%
  • 2021: 14.1%

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

Marital status

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In St Marys, the largest group is Married at 47%, followed by Never married (32%) and Divorced (12%).

Age & sex structure

  • 85+: 85+: 10 males; 85+: 11 females
  • 80–84: 80–84: 14 males; 80–84: 14 females
  • 75–79: 75–79: 23 males; 75–79: 23 females
  • 70–74: 70–74: 28 males; 70–74: 23 females
  • 65–69: 65–69: 46 males; 65–69: 22 females
  • 60–64: 60–64: 66 males; 60–64: 46 females
  • 55–59: 55–59: 25 males; 55–59: 37 females
  • 50–54: 50–54: 25 males; 50–54: 35 females
  • 45–49: 45–49: 18 males; 45–49: 33 females
  • 40–44: 40–44: 10 males; 40–44: 17 females
  • 35–39: 35–39: 16 males; 35–39: 17 females
  • 30–34: 30–34: 12 males; 30–34: 10 females
  • 25–29: 25–29: 8 males; 25–29: 14 females
  • 20–24: 20–24: 14 males; 20–24: 13 females
  • 15–19: 15–19: 11 males; 15–19: 11 females
  • 10–14: 10–14: 21 males; 10–14: 18 females
  • 5–9: 5–9: 12 males; 5–9: 20 females
  • 0–4: 0–4: 8 males; 0–4: 11 females

Sources

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

More for St Marys

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in St Marys [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sal/SAL60634/st-marys/topic/demographics-identity