Bletchley · Suburb / Locality

Demographics & Identity in Bletchley

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

A small population of just 76 people now lives in Bletchley, where the age profile has shifted towards a mix of young families and seniors. This community is notably different from the national average, with a very high proportion of children and a strong presence of married couples.

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📍 Bletchley, Suburb / Locality

Where Bletchley sits — Total population

76 —
  • 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 Bletchley — lower than 65% of areas.

Total population compared with the state and national average
Bletchley76
5255, SA 10,143
South Australia 1,781,516
Australia 25,422,788

Population

How many people, and the typical age.

The typical resident here is 41 years old, which is about the same as the South Australian figure but noticeably older than the Australian typical age of 38.

76 —

Lower than 65% of suburb / locality areas.

  • 2016: 77
  • 2021: 76

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

41 yrs —

Younger than 67% of suburb / locality areas.

  • 2016: 41 yrs
  • 2021: 41 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 30.3% of the population, which is far above the national figure of 18.2%. This high number of children exists alongside a senior population (22.4%) that is well above the Australian average.

22.4% —

Higher than 66% of suburb / locality areas.

  • 2016: 6.5%
  • 2021: 22.4%

Share of the population aged 65 years and over.

30.3% —

Higher than 95% of suburb / locality areas.

  • 2016: 26.0%
  • 2021: 30.3%

Share of the population aged under 15 years.

Age structure

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Bletchley splits fairly evenly between Children (0–14) (29%) and Older adults (45–64) (25%), with Seniors (65+) at 21%.

Identity & relationships

First Nations identity and marital status.

Married couples are the most common relationship status at 70.4%, while those in de facto relationships (5.6%) are well below the national figure. No residents identify as Aboriginal or Torres Strait Islander, which is well below the Australian average.

5.6% —

Lower than 88% of suburb / locality areas.

  • 2016: 10.7%
  • 2021: 5.6%

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

Marital status

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In Bletchley, Married is the majority at 69%; Never married is next at 25%.

Age & sex structure

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

Sources

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

More for Bletchley

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Bletchley [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sal/SAL40125/bletchley/topic/demographics-identity