Suburb profile · ABS Census 2021
Mount Gambier suburb profile
Mount Gambier, SA · Postcode 5290
This Mount Gambier suburb profile summarises official Australian Bureau of Statistics Census 2021 data for Mount Gambier, SA (postcode 5290). Use it as a free suburb report covering population, median rent, household income, age, housing tenure and employment, plus how those figures changed since Census 2016— then compare Mount Gambier with nearby suburbs.
Mount Gambier at a glance
Population
25,591
Median rent
$220/wk
Household income
$1,197/wk
Median age
41
Mount Gambier trends (2016 → 2021)
Change since the previous Census. Historical figures are mapped from State Suburbs (SSC) to today's suburb boundaries.
Population
Census 2011 → 2016 → 2021
+3% over 10 years
Population
25,591
was 25,512 in 2016
+79 · +0.3%
Median rent
$220/wk
was $190/wk in 2016
+$30 · +15.8%
Household income
$1,197/wk
was $1,034/wk in 2016
+$163 · +15.8%
Median age
41
was 40 in 2016
+1 · +2.5%
Dig deeper: Mount Gambier population growth · Mount Gambier then and now
Mount Gambier vs nearby & SA
Median Census 2021 figures for Mount Gambier, nearby suburbs (8), and the SA state median (suburbs with 1,000+ people).
Rent
-31.2% vs area
- Mount Gambier$220/wk
- Nearby$227.5/wk
- SA$320/wk
Household income
-23.2% vs area
- Mount Gambier$1,197/wk
- Nearby$1,962/wk
- SA$1,559/wk
Median age
0% vs area
- Mount Gambier41
- Nearby42.5
- SA41
Personal income
-11.5% vs area
- Mount Gambier$691/wk
- Nearby$803.5/wk
- SA$781/wk
Nearby uses the same postcode first, then larger suburbs in SA.
Socio-economic profile
How Mount Gambier compares to other Australian suburbs on income, education and occupation — from official ABS SEIFA 2021 data.
Mount Gambier ranks among Australia's most disadvantaged suburbs. It shows limited economic resources and lower education and occupation levels.
Relative disadvantage (IRSD)
Decile 2916.7
Lower score / decile = more relative disadvantage
Advantage & disadvantage (IRSAD)
Decile 1887.4
Higher score / decile = more relative advantage
Economic resources (IER)
Decile 1920.2
Access to economic resources (income, housing)
Education & occupation (IEO)
Decile 1879.6
Education and occupational skill levels
Source: ABS SEIFA 2021. See methodology.
Mount Gambier on the map
OpenStreetMap outline for Mount Gambier, SA.
Map data © OpenStreetMap contributors. Boundary matching is approximate.
Mount Gambier people
- Population
- 25,591
- Median age
- 41
- Born overseas
- 11.5%
- Average household size
- 2.2
Total usual residents (Census 2021)
Median age of residents in years
Percentage born outside Australia
Average number of people per household
Mount Gambier income
- Median household income
- $1,197/wk
- Median personal income
- $691/wk
Median total weekly household income
Median total weekly personal income
Mount Gambier housing
- Median rent
- $220/wk
- Median mortgage repayment
- $1,083/mo
- Separate houses
- 69.2%
- Flats & apartments
- 8%
- Owned outright
- 27.5%
- Mortgaged
- 29%
- Rented
- 29.3%
- Unoccupied dwellings
- 9.9%
Median weekly rent for rented dwellings
Median monthly mortgage repayment
Percentage of dwellings that are separate houses
Percentage of dwellings that are flats or apartments
Percentage of dwellings owned without a mortgage
Percentage of dwellings with a mortgage
Percentage of dwellings rented
Percentage of private dwellings unoccupied on Census night
Mount Gambier work
- Employment to population
- 55.3%
- Unemployment rate
- 4.9%
- Year 12 or above
- 39.3%
Employed persons as a percentage of population aged 15+
Unemployed persons as a percentage of the labour force
Percentage with Year 12 or equivalent as highest school level
Nearby suburb profiles (near 5290)
Compare Mount Gambier with nearby suburbs
Mount Gambier in numbers
Mount Gambier had 25,591 residents at the 2021 Census, making it the 1st most populous suburb or locality in SA out of 1,624. The median age is 41, close to the typical SA suburb. The average household has 2.2 people. 11.5% of residents were born overseas.
Among occupied homes, 27.5% own their home outright, 29% are paying a mortgage, 29.3% rent. Separate houses make up 69.2% of dwellings, with 8% in flats or apartments. Median rent was $220/wk, 29% below the typical SA suburb.
Median household income was $1,197/wk, 22% below the typical SA suburb. The unemployment rate on Census night was 4.9%. 39.3% of adults had completed Year 12 or above. On the ABS SEIFA index of relative socio-economic disadvantage it sits in decile 2 nationally (1 is most disadvantaged, 10 least).
Between the 2016 and 2021 Censuses the population grew 0.3% (from 25,512 to 25,591). Median rent moved from $190/wk to $220/wk (+15.8%).
Mount Gambier suburb FAQs
- What is the median rent in Mount Gambier, SA?
- The median weekly rent in Mount Gambier was $220/wk at the 2021 Census (ABS).
- How many people live in Mount Gambier, SA?
- Mount Gambier had 25,591 residents at the 2021 Census, up 0.3% from 2016.
- What is the median household income in Mount Gambier?
- Median household income in Mount Gambier was $1,197/wk at the 2021 Census.
- Do most people rent or own in Mount Gambier?
- 29.3% of occupied homes in Mount Gambier were rented, 27.5% were owned outright and 29% were owned with a mortgage.
About this Mount Gambier suburb profile
Figures are from the ABS Census of Population and Housing 2021 (General Community Profile) for the Suburbs and Localities boundary matching Mount Gambier. Where shown, 2016 values come from the 2016 State Suburbs (SSC) profile, linked via ABS geographic correspondence — boundaries are not always identical. Medians may be suppressed for very small areas. This is not financial or relocation advice — use it alongside current market data.
Source: ABS Census 2021. Methodology