29,446 ▲ +6.1%
Lower than 52% of urban area areas.
- 2011: 27,756
- 2016: 28,684
- 2021: 29,446
The number of people who usually live in the area, counted on Census night.
Mount Gambier · Urban Area
Demographics & Identity in Mount Gambier
Who lives here — how many people, how old they are, and how communities identify.
A growing population has aged since 2011 in Mount Gambier, where the typical resident is now 41. The area has seen a notable increase in seniors, with the 65 and over group rising by 5.7 percentage points over the last decade.
29,446
▲ +6.1%
- 1,666–2,215: 1 area
- 2,215–2,944: 0 areas
- 2,944–3,914: 0 areas
- 3,914–5,203: 1 area
- 5,203–6,917: 0 areas
- 6,917–9,196: 0 areas
- 9,196–12,225: 6 areas
- 12,225–16,252: 16 areas
- 16,252–21,605: 17 areas
- 21,605–28,721: 14 areas
- 28,721–38,182: 7 areas
- 38,182–50,758: 12 areas
- 50,758–67,478: 4 areas
- 67,478–89,704: 6 areas
- 89,704–119,252: 4 areas
- 119,252–158,533: 3 areas
- 158,533–210,752: 2 areas
- 210,752–280,172: 2 areas
- 280,172–372,458: 4 areas
- 372,458–495,142: 2 areas
- 495,142–658,237: 1 area
- 658,237–875,054: 3 areas
- 875,054–1,163,289: 1 area
- 1,163,289–1,546,466: 1 area
- 1,546,466–2,055,858: 0 areas
- 2,055,858–2,733,039: 2 areas
- 2,733,039–3,633,278: 0 areas
- 3,633,278–4,830,047: 2 areas
All urban area areas, 2021. The marker is Mount Gambier — lower than 52% of areas.
| Mount Gambier | 29,446 |
|---|---|
| 5290, SA | 25,591 |
| South Australia | 1,781,516 |
| Australia | 25,422,788 |
Population
How many people, and the typical age.
The population grew by 6.1% since 2011, adding about 1,690 people to reach a total of 29,446. The typical resident is now 41, which is noticeably older than the national figure of 38.
41 yrs ▲ +7.9%
Older than 52% of urban area areas.
- 2011: 38 yrs
- 2016: 40 yrs
- 2021: 41 yrs
Half the population is older than this age, and half younger.
Age profile
How the population splits across age groups.
Seniors aged 65 and over make up 20.9% of the area, which is well above the national figure of 17.2%. Meanwhile, the proportion of children under 15 fell 2.8 percentage points since 2011 to 18.2%.
20.9% ▲ +37.8%
Higher than 57% of urban area areas.
- 2011: 15.2%
- 2016: 18.2%
- 2021: 20.9%
Share of the population aged 65 years and over.
18.2% ▼ -13.2%
Higher than 51% of urban area areas.
- 2011: 21.0%
- 2016: 19.8%
- 2021: 18.2%
Share of the population aged under 15 years.
Age structure
View on map →Mount Gambier splits fairly evenly between Older adults (45–64) (26%) and Young adults (25–44) (24%), with Seniors (65+) at 21%.
Identity & relationships
First Nations identity and marital status.
People in de facto relationships rose to 12.5% since 2011, which is a little above the state figure. Aboriginal and Torres Strait Islander people make up 2.7% of the population, which is about the same as the national figure.
2.7% ▲ +29.7%
Lower than 79% of urban area areas.
- 2011: 2.1%
- 2016: 2.2%
- 2021: 2.7%
Share of people who identify as Aboriginal and/or Torres Strait Islander.
12.5% ▲ +16.9%
Lower than 54% of urban area areas.
- 2011: 10.7%
- 2016: 11.1%
- 2021: 12.5%
Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).
Marital status
View on map →In Mount Gambier, the largest group is Married at 45%, followed by Never married (35%) and Divorced (10%).
Age & sex structure
Sources
- Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).
More for Mount Gambier
Cite this page
Australian Bureau of Statistics. (2021). Demographics & Identity in Mount Gambier [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sua/4002/mount-gambier/topic/demographics-identity