Marion Bay · Suburb / Locality

Demographics & Identity in Marion Bay

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

A typical resident of Marion Bay is far older than most people in similar areas. With a typical age of 54, the population is much older than the state and national figures. This reflects a community where adults aged 45 to 64 make up the largest age group at 42.4%.

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📍 Marion Bay, Suburb / Locality

Where Marion Bay sits — Total population

210 ▼ -12.9%
  • 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 Marion Bay — higher than 55% of areas.

Total population compared with the state and national average
Marion Bay210
5575, SA 2,391
South Australia 1,781,516
Australia 25,422,788

Population

How many people, and the typical age.

The population totals 210 people, which is larger than about 55% of similar areas. The typical resident is 54, making the area far older than the national figure by 16 years.

210 ▼ -12.9%

Higher than 55% of suburb / locality areas.

  • 2011: 241
  • 2016: 172
  • 2021: 210

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

54 yrs ▲ +17.4%

Older than 83% of suburb / locality areas.

  • 2011: 46 yrs
  • 2016: 50 yrs
  • 2021: 54 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 11% of the population, which is well below the national figure of 18.2%. Meanwhile, seniors aged 65 and over account for 19.5%, a figure about the same as the state average.

19.5% ▲ +12.5%

Higher than 54% of suburb / locality areas.

  • 2011: 17.4%
  • 2016: 17.4%
  • 2021: 19.5%

Share of the population aged 65 years and over.

11.0% ▼ -32.0%

Lower than 81% of suburb / locality areas.

  • 2011: 16.1%
  • 2016: 18.6%
  • 2021: 11.0%

Share of the population aged under 15 years.

Age structure

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In Marion Bay, the largest group is Older adults (45–64) at 43%, followed by Seniors (65+) (20%) and Young adults (25–44) (17%).

Identity & relationships

First Nations identity and marital status.

De facto relationships are much more common here than in most similar areas, at 15.7%. This is well above the 11.5% national figure, while 1.4% of residents identify as Aboriginal or Torres Strait Islander.

15.7% ▲ +12.2%

Higher than 74% of suburb / locality areas.

  • 2011: 14.0%
  • 2016: 11.2%
  • 2021: 15.7%

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

Marital status

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Marion Bay splits fairly evenly between Married (40%) and Never married (35%), with Divorced at 16%.

Age & sex structure

  • 85+: 85+: 0 males; 85+: 0 females
  • 80–84: 80–84: 3 males; 80–84: 0 females
  • 75–79: 75–79: 7 males; 75–79: 6 females
  • 70–74: 70–74: 0 males; 70–74: 6 females
  • 65–69: 65–69: 9 males; 65–69: 4 females
  • 60–64: 60–64: 17 males; 60–64: 11 females
  • 55–59: 55–59: 25 males; 55–59: 17 females
  • 50–54: 50–54: 13 males; 50–54: 9 females
  • 45–49: 45–49: 0 males; 45–49: 4 females
  • 40–44: 40–44: 8 males; 40–44: 6 females
  • 35–39: 35–39: 7 males; 35–39: 8 females
  • 30–34: 30–34: 0 males; 30–34: 4 females
  • 25–29: 25–29: 9 males; 25–29: 4 females
  • 20–24: 20–24: 0 males; 20–24: 4 females
  • 15–19: 15–19: 3 males; 15–19: 4 females
  • 10–14: 10–14: 6 males; 10–14: 3 females
  • 5–9: 5–9: 0 males; 5–9: 9 females
  • 0–4: 0–4: 0 males; 0–4: 4 females

Sources

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

More for Marion Bay

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Marion Bay [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sal/SAL40831/marion-bay/topic/demographics-identity