5151, SA · Postcode

Demographics & Identity in 5151, SA

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

Fewer children and more seniors have shifted the demographic balance in postcode 5151 since 2011. The population has grown by 10% to reach 405 people, while the typical resident is now 41. This makes the area noticeably older than the national figure of 38.

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📍 5151, SA, Postcode

Where 5151, SA sits — Total population

405 ▲ +10.1%
  • 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 5151, SA — lower than 84% of areas.

Total population compared with the state and national average
5151, SA405
Adelaide Hills 40,879
South Australia 1,781,516
Australia 25,422,788

Population

How many people, and the typical age.

There are 405 people living here, a total that is smaller than about 83% of similar areas. This population grew by 37 people between 2011 and 2021.

405 ▲ +10.1%

Lower than 84% of postcode areas.

  • 2011: 368
  • 2016: 369
  • 2021: 405

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

41 yrs ▼ -2.4%

Younger than 57% of postcode areas.

  • 2011: 42 yrs
  • 2016: 44 yrs
  • 2021: 41 yrs

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

Age profile

How the population splits across age groups.

The area is aging, with the proportion of people aged 65 and over rising by 8.0 percentage points to 17.5%. Meanwhile, children under 15 fell to 16.3%, which is a little below the national figure.

17.5% ▲ +84.3%

Lower than 62% of postcode areas.

  • 2011: 9.5%
  • 2016: 14.4%
  • 2021: 17.5%

Share of the population aged 65 years and over.

16.3% ▼ -21.1%

Lower than 62% of postcode areas.

  • 2011: 20.7%
  • 2016: 18.2%
  • 2021: 16.3%

Share of the population aged under 15 years.

Age structure

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In 5151, SA, the largest group is Older adults (45–64) at 29%, followed by Young adults (25–44) (20%) and Seniors (65+) (18%).

Identity & relationships

First Nations identity and marital status.

About 1.0% of residents are Aboriginal and Torres Strait Islander, which is a little below the state and national figures. Most residents are married (52.1%), while those in de facto relationships are much lower than most areas at 9.6%.

1.0% ▲ —

Lower than 73% of postcode areas.

  • 2011: 0.0%
  • 2016: 1.6%
  • 2021: 1.0%

Share of people who identify as Aboriginal and/or Torres Strait Islander.

9.6% ▲ +14.6%

Lower than 79% of postcode areas.

  • 2011: 8.3%
  • 2016: 7.5%
  • 2021: 9.6%

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

Marital status

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In 5151, SA, 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: 4 females
  • 75–79: 75–79: 7 males; 75–79: 4 females
  • 70–74: 70–74: 17 males; 70–74: 7 females
  • 65–69: 65–69: 10 males; 65–69: 13 females
  • 60–64: 60–64: 12 males; 60–64: 12 females
  • 55–59: 55–59: 12 males; 55–59: 20 females
  • 50–54: 50–54: 21 males; 50–54: 11 females
  • 45–49: 45–49: 12 males; 45–49: 17 females
  • 40–44: 40–44: 11 males; 40–44: 12 females
  • 35–39: 35–39: 13 males; 35–39: 18 females
  • 30–34: 30–34: 13 males; 30–34: 6 females
  • 25–29: 25–29: 6 males; 25–29: 9 females
  • 20–24: 20–24: 12 males; 20–24: 12 females
  • 15–19: 15–19: 25 males; 15–19: 14 females
  • 10–14: 10–14: 9 males; 10–14: 17 females
  • 5–9: 5–9: 9 males; 5–9: 15 females
  • 0–4: 0–4: 8 males; 0–4: 6 females

Sources

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

More for 5151, SA

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in 5151, SA [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/poa/POA5151/5151-sa/topic/demographics-identity