20,405 ▲ +10.3%
Higher than 84% of postcode areas.
- 2011: 18,504
- 2016: 19,218
- 2021: 20,405
The number of people who usually live in the area, counted on Census night.
5125, SA · Postcode
Demographics & Identity in 5125, SA
Who lives here — how many people, how old they are, and how communities identify.
A typical resident in postcode 5125 is 42 years old, making the area noticeably older than the national average. The population has grown by 10% since 2011 to reach 20,405 people, with a resident profile that has aged by five years over the last decade.
20,405
▲ +10.3%
- 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 5125, SA — higher than 84% of areas.
| 5125, SA | 20,405 |
|---|---|
| Tea Tree Gully | 101,174 |
| South Australia | 1,781,516 |
| Australia | 25,422,788 |
Population
How many people, and the typical age.
The total population reached 20,405 people in 2021, which is larger than about 85% of similar areas. This represents a growth of 1,901 people since 2011.
42 yrs ▲ +13.5%
Younger than 52% of postcode areas.
- 2011: 37 yrs
- 2016: 40 yrs
- 2021: 42 yrs
Half the population is older than this age, and half younger.
Age profile
How the population splits across age groups.
Older adults aged 45 to 64 make up the largest group at 29.3%. While the proportion of children has fallen by 3.3 percentage points since 2011, the number of seniors aged 65 and over has risen by 7.3 percentage points to 17.4%.
17.4% ▲ +72.8%
Lower than 63% of postcode areas.
- 2011: 10.1%
- 2016: 13.9%
- 2021: 17.4%
Share of the population aged 65 years and over.
17.8% ▼ -15.8%
Higher than 56% of postcode areas.
- 2011: 21.1%
- 2016: 19.2%
- 2021: 17.8%
Share of the population aged under 15 years.
Age structure
View on map →In 5125, SA, the largest group is Older adults (45–64) at 29%, followed by Young adults (25–44) (22%) and Children (0–14) (18%).
Identity & relationships
First Nations identity and marital status.
Most residents are married (53.0%), while those in de facto relationships make up 8.6%, which is much lower than most areas. Aboriginal and Torres Strait Islander people account for 1.0% of the population, a little below the state and national figures.
1.0% ▲ +44.8%
Lower than 73% of postcode areas.
- 2011: 0.7%
- 2016: 0.8%
- 2021: 1.0%
Share of people who identify as Aboriginal and/or Torres Strait Islander.
8.6% ▲ +11.4%
Lower than 86% of postcode areas.
- 2011: 7.7%
- 2016: 8.1%
- 2021: 8.6%
Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).
Marital status
View on map →In 5125, SA, Married is the majority at 53%; Never married is next at 30%.
Age & sex structure
Sources
- Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).
More for 5125, SA
Cite this page
Australian Bureau of Statistics. (2021). Demographics & Identity in 5125, SA [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/poa/POA5125/5125-sa/topic/demographics-identity