25,591 ▲ +2.8%
Higher than 91% of suburb / locality areas.
- 2011: 24,905
- 2016: 25,512
- 2021: 25,591
The number of people who usually live in the area, counted on Census night.
Mount Gambier · Suburb / Locality
Demographics & Identity in Mount Gambier
Who lives here — how many people, how old they are, and how communities identify.
Among the largest areas of its kind, Mount Gambier is a significant regional hub with 25,591 residents. The typical person here is 41 years old, making the population noticeably older than the national figure. This age profile is reflected in a high number of seniors compared to most other Australian areas.
25,591
▲ +2.8%
- 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 Mount Gambier — higher than 91% of areas.
| Mount Gambier | 25,591 |
|---|---|
| 5290, SA | 25,591 |
| South Australia | 1,781,516 |
| Australia | 25,422,788 |
Population
How many people, and the typical age.
The total population of Mount Gambier is 25,591. While the typical resident's age of 41 is about the same as across South Australia, it is noticeably older than the Australian typical age of 38.
41 yrs ▲ +10.8%
Younger than 67% of suburb / locality areas.
- 2011: 37 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 21.8% of the population, which is well above the national figure of 17.2%. Children under 15 account for 17.9%, a figure that is about the same as both the state and the rest of the country.
21.8% ▲ +38.9%
Higher than 63% of suburb / locality areas.
- 2011: 15.7%
- 2016: 18.8%
- 2021: 21.8%
Share of the population aged 65 years and over.
17.9% ▼ -13.4%
Higher than 56% of suburb / locality areas.
- 2011: 20.7%
- 2016: 19.7%
- 2021: 17.9%
Share of the population aged under 15 years.
Age structure
View on map →Mount Gambier splits fairly evenly between Older adults (45–64) (25%) and Young adults (25–44) (24%), with Seniors (65+) at 22%.
Identity & relationships
First Nations identity and marital status.
About 2.8% of residents identify as Aboriginal and Torres Strait Islander, which is about the same as the national figure. Regarding relationships, 42.4% of people are married and 12.7% are in a de facto relationship, the latter being a little above the state and national figures.
2.8% ▲ +24.3%
Higher than 59% of suburb / locality areas.
- 2011: 2.3%
- 2016: 2.3%
- 2021: 2.8%
Share of people who identify as Aboriginal and/or Torres Strait Islander.
12.7% ▲ +14.7%
Higher than 54% of suburb / locality areas.
- 2011: 11.1%
- 2016: 11.1%
- 2021: 12.7%
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 42%, followed by Never married (36%) and Divorced (11%).
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/sal/SAL40947/mount-gambier/topic/demographics-identity