2,429 ▲ +7.9%
Higher than 81% of suburb / locality areas.
- 2011: 2,251
- 2016: 2,299
- 2021: 2,429
The number of people who usually live in the area, counted on Census night.
Underdale · Suburb / Locality
Demographics & Identity in Underdale
Who lives here — how many people, how old they are, and how communities identify.
A typical resident in Underdale is 38, making the area noticeably younger than the South Australian average. This small suburb houses 2,429 people and stands out for having far fewer seniors and children than most similar areas.
2,429
▲ +7.9%
- 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 Underdale — higher than 81% of areas.
| Underdale | 2,429 |
|---|---|
| 5032, SA | 13,452 |
| South Australia | 1,781,516 |
| Australia | 25,422,788 |
Population
How many people, and the typical age.
The population of 2,429 is larger than about 82% of similar areas. While the typical resident is 38, this is noticeably younger than the South Australian figure of 41.
38 yrs ▲ +8.6%
Younger than 77% of suburb / locality areas.
- 2011: 35 yrs
- 2016: 36 yrs
- 2021: 38 yrs
Half the population is older than this age, and half younger.
Age profile
How the population splits across age groups.
Underdale has a smaller proportion of children and seniors than most areas. For example, those aged 65 and over make up 16.0% of the population, which is well below the South Australian figure of 20.0%.
16.0% ▲ +15.6%
Lower than 62% of suburb / locality areas.
- 2011: 13.9%
- 2016: 14.3%
- 2021: 16.0%
Share of the population aged 65 years and over.
14.7% ▼ -8.1%
Lower than 66% of suburb / locality areas.
- 2011: 15.9%
- 2016: 15.2%
- 2021: 14.7%
Share of the population aged under 15 years.
Age structure
View on map →In Underdale, the largest group is Young adults (25–44) at 32%, followed by Older adults (45–64) (26%) and Seniors (65+) (16%).
Identity & relationships
First Nations identity and marital status.
About 1.6% of residents identify as Aboriginal or Torres Strait Islander, which is about the same as the state average. Those in de facto relationships make up 9.1% of the population, a little below the national figure of 11.5%.
1.6% ▲ +80.8%
Lower than 53% of suburb / locality areas.
- 2011: 0.9%
- 2016: 1.0%
- 2021: 1.6%
Share of people who identify as Aboriginal and/or Torres Strait Islander.
9.1% ▲ +12.3%
Lower than 73% of suburb / locality areas.
- 2011: 8.1%
- 2016: 8.2%
- 2021: 9.1%
Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).
Marital status
View on map →In Underdale, the largest group is Married at 46%, followed by Never married (38%) and Divorced (8%).
Age & sex structure
Sources
- Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).
More for Underdale
Cite this page
Australian Bureau of Statistics. (2021). Demographics & Identity in Underdale [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sal/SAL41488/underdale/topic/demographics-identity