Tea Tree Gully · Council (LGA)

Demographics & Identity in Tea Tree Gully

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

More than half of the 101,174 people in Tea Tree Gully are married, making it a community defined by established households. The typical resident is 41, which is noticeably older than the national figure. This population has grown by 6% since 2011, adding about 5,707 people to the area.

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📍 Tea Tree Gully, Council (LGA)

Where Tea Tree Gully sits — Total population

101,174 ▲ +6.0%
  • 1–2: 3 areas
  • 2–3: 0 areas
  • 3–4: 0 areas
  • 4–7: 0 areas
  • 7–12: 2 areas
  • 12–20: 1 area
  • 20–33: 0 areas
  • 33–55: 1 area
  • 55–91: 0 areas
  • 91–150: 5 areas
  • 150–248: 3 areas
  • 248–409: 13 areas
  • 409–675: 22 areas
  • 675–1,115: 38 areas
  • 1,115–1,840: 37 areas
  • 1,840–3,038: 30 areas
  • 3,038–5,014: 40 areas
  • 5,014–8,276: 49 areas
  • 8,276–13,661: 54 areas
  • 13,661–22,550: 57 areas
  • 22,550–37,223: 43 areas
  • 37,223–61,442: 49 areas
  • 61,442–101,420: 39 areas
  • 101,420–167,409: 37 areas
  • 167,409–276,336: 31 areas
  • 276,336–456,137: 8 areas
  • 456,137–752,926: 2 areas
  • 752,926–1,242,825: 1 area

All council (lga) areas, 2021. The marker is Tea Tree Gully — higher than 86% of areas.

Total population compared with the state and national average
Tea Tree Gully101,174
Greater Adelaide 1,387,290
South Australia 1,781,516
Australia 25,422,788

Population

How many people, and the typical age.

Tea Tree Gully is larger than about 86% of similar areas. The typical person here is 41, which is about the same as the South Australian figure but older than the national average.

101,174 ▲ +6.0%

Higher than 86% of council (lga) areas.

  • 2011: 95,467
  • 2016: 97,734
  • 2021: 101,174

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

41 yrs ▲ +2.5%

Younger than 57% of council (lga) areas.

  • 2011: 40 yrs
  • 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.

The area is ageing, with the proportion of people aged 65 and over rising 5.7 percentage points since 2011 to reach 20.5%. This is well above the national figure of 17.2%, while children under 15 remain steady at 17.3%.

20.5% ▲ +38.6%

Higher than 54% of council (lga) areas.

  • 2011: 14.8%
  • 2016: 18.2%
  • 2021: 20.5%

Share of the population aged 65 years and over.

17.3% ▼ -4.1%

Lower than 55% of council (lga) areas.

  • 2011: 18.0%
  • 2016: 17.6%
  • 2021: 17.3%

Share of the population aged under 15 years.

Age structure

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Tea Tree Gully splits fairly evenly between Older adults (45–64) (25%) and Young adults (25–44) (25%), with Seniors (65+) at 20%.

Identity & relationships

First Nations identity and marital status.

Aboriginal and Torres Strait Islander people make up 1.3% of the population, which is much lower than most areas. Those in de facto relationships account for 9.5%, a figure a little below both the state and national averages.

9.5% ▲ +14.7%

Lower than 88% of council (lga) areas.

  • 2011: 8.3%
  • 2016: 9.0%
  • 2021: 9.5%

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

Marital status

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In Tea Tree Gully, Married is the majority at 51%; Never married is next at 31%.

Age & sex structure

  • 85+: 85+: 990 males; 85+: 1,483 females
  • 80–84: 80–84: 1,259 males; 80–84: 1,477 females
  • 75–79: 75–79: 1,896 males; 75–79: 2,206 females
  • 70–74: 70–74: 2,588 males; 70–74: 2,974 females
  • 65–69: 65–69: 2,741 males; 65–69: 3,075 females
  • 60–64: 60–64: 2,845 males; 60–64: 3,244 females
  • 55–59: 55–59: 3,093 males; 55–59: 3,360 females
  • 50–54: 50–54: 3,269 males; 50–54: 3,450 females
  • 45–49: 45–49: 3,144 males; 45–49: 3,300 females
  • 40–44: 40–44: 3,252 males; 40–44: 3,268 females
  • 35–39: 35–39: 3,400 males; 35–39: 3,549 females
  • 30–34: 30–34: 3,054 males; 30–34: 3,213 females
  • 25–29: 25–29: 3,030 males; 25–29: 2,802 females
  • 20–24: 20–24: 3,132 males; 20–24: 2,762 females
  • 15–19: 15–19: 3,088 males; 15–19: 2,756 females
  • 10–14: 10–14: 3,195 males; 10–14: 2,980 females
  • 5–9: 5–9: 3,065 males; 5–9: 2,967 females
  • 0–4: 0–4: 2,721 males; 0–4: 2,544 females

Sources

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

More for Tea Tree Gully

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Tea Tree Gully [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/lga/LGA47700/tea-tree-gully/topic/demographics-identity