5131, SA · Postcode

Demographics & Identity in 5131, SA

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

Far older residents than most similar areas define postcode 5131, where the typical person is 49 years old. This is 11 years older than the national figure, reflecting a community that has aged significantly over the last decade.

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📍 5131, SA, Postcode

Where 5131, SA sits — Total population

979 ▲ +10.6%
  • 1–2: 1 area
  • 2–2: 0 areas
  • 2–4: 0 areas
  • 4–5: 2 areas
  • 5–8: 3 areas
  • 8–12: 2 areas
  • 12–19: 2 areas
  • 19–29: 12 areas
  • 29–44: 19 areas
  • 44–67: 35 areas
  • 67–102: 30 areas
  • 102–155: 70 areas
  • 155–237: 97 areas
  • 237–360: 129 areas
  • 360–549: 158 areas
  • 549–836: 168 areas
  • 836–1,273: 181 areas
  • 1,273–1,938: 179 areas
  • 1,938–2,951: 157 areas
  • 2,951–4,493: 179 areas
  • 4,493–6,842: 176 areas
  • 6,842–10,418: 210 areas
  • 10,418–15,865: 268 areas
  • 15,865–24,158: 254 areas
  • 24,158–36,786: 182 areas
  • 36,786–56,016: 93 areas
  • 56,016–85,299: 28 areas
  • 85,299–129,888: 8 areas

All postcode areas, 2021. The marker is 5131, SA — lower than 70% of areas.

Total population compared with the state and national average
5131, SA979
Adelaide Hills 40,879
South Australia 1,781,516
Australia 25,422,788

Population

How many people, and the typical age.

The population grew by 11% since 2011 to reach 979 people. This is smaller than about 69% of areas at this level.

979 ▲ +10.6%

Lower than 70% of postcode areas.

  • 2011: 885
  • 2016: 980
  • 2021: 979

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

49 yrs ▲ +14.0%

Older than 77% of postcode areas.

  • 2011: 43 yrs
  • 2016: 47 yrs
  • 2021: 49 yrs

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

Age profile

How the population splits across age groups.

A shrinking number of children under 15, now at 14.2%, helps explain the older profile, while the proportion of seniors aged 65 and over rose by 9.8 points since 2011 to reach 21.0%.

21.0% ▲ +86.4%

Higher than 58% of postcode areas.

  • 2011: 11.3%
  • 2016: 18.2%
  • 2021: 21.0%

Share of the population aged 65 years and over.

14.2% ▼ -20.9%

Lower than 78% of postcode areas.

  • 2011: 17.9%
  • 2016: 16.1%
  • 2021: 14.2%

Share of the population aged under 15 years.

Age structure

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In 5131, SA, the largest group is Older adults (45–64) at 36%, followed by Seniors (65+) (21%) and Young adults (25–44) (16%).

Identity & relationships

First Nations identity and marital status.

Married couples make up 60.0% of the area, while those in de facto relationships are at 8.5%, which is well below the national figure of 11.5%. Only 1.2% of residents identify as Aboriginal or Torres Strait Islander.

8.5% ▲ +4.8%

Lower than 86% of postcode areas.

  • 2011: 8.1%
  • 2016: 6.5%
  • 2021: 8.5%

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

Marital status

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In 5131, SA, Married is the majority at 60%; Never married is next at 28%.

Age & sex structure

  • 85+: 85+: 3 males; 85+: 0 females
  • 80–84: 80–84: 11 males; 80–84: 13 females
  • 75–79: 75–79: 15 males; 75–79: 19 females
  • 70–74: 70–74: 26 males; 70–74: 33 females
  • 65–69: 65–69: 47 males; 65–69: 35 females
  • 60–64: 60–64: 46 males; 60–64: 38 females
  • 55–59: 55–59: 51 males; 55–59: 53 females
  • 50–54: 50–54: 49 males; 50–54: 33 females
  • 45–49: 45–49: 32 males; 45–49: 50 females
  • 40–44: 40–44: 27 males; 40–44: 24 females
  • 35–39: 35–39: 15 males; 35–39: 27 females
  • 30–34: 30–34: 18 males; 30–34: 11 females
  • 25–29: 25–29: 20 males; 25–29: 16 females
  • 20–24: 20–24: 35 males; 20–24: 28 females
  • 15–19: 15–19: 34 males; 15–19: 44 females
  • 10–14: 10–14: 38 males; 10–14: 25 females
  • 5–9: 5–9: 25 males; 5–9: 21 females
  • 0–4: 0–4: 10 males; 0–4: 13 females

Sources

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

More for 5131, SA

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in 5131, SA [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/poa/POA5131/5131-sa/topic/demographics-identity