Suburb profile · ABS Census 2021
Isabella Plains suburb profile
Isabella Plains, ACT · Postcode 2905
This Isabella Plains suburb profile summarises official Australian Bureau of Statistics Census 2021 data for Isabella Plains, ACT (postcode 2905). 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 Isabella Plains with nearby suburbs.
Isabella Plains at a glance
Population
4,329
Median rent
$450/wk
Household income
$2,131/wk
Median age
36
Isabella Plains 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
+0.3% over 10 years
Population
4,329
was 4,405 in 2016
-76 · -1.7%
Median rent
$450/wk
was $381/wk in 2016
+$69 · +18.1%
Household income
$2,131/wk
was $1,841/wk in 2016
+$290 · +15.8%
Median age
36
was 35 in 2016
+1 · +2.9%
Dig deeper: Isabella Plains population growth · Isabella Plains then and now
Isabella Plains vs nearby & ACT
Median Census 2021 figures for Isabella Plains, nearby suburbs (8), and the ACT state median (suburbs with 1,000+ people).
Rent
0% vs area
- Isabella Plains$450/wk
- Nearby$430/wk
- ACT$450/wk
Household income
-11.3% vs area
- Isabella Plains$2,131/wk
- Nearby$2,306.5/wk
- ACT$2,403.5/wk
Median age
-4% vs area
- Isabella Plains36
- Nearby37
- ACT37.5
Personal income
-9.2% vs area
- Isabella Plains$1,084/wk
- Nearby$1,146/wk
- ACT$1,193.5/wk
Nearby uses the same postcode first, then larger suburbs in ACT.
Socio-economic profile
How Isabella Plains compares to other Australian suburbs on income, education and occupation — from official ABS SEIFA 2021 data.
Isabella Plains sits above average for socio-economic advantage compared with suburbs Australia-wide.
Relative disadvantage (IRSD)
Decile 71,045.6
Lower score / decile = more relative disadvantage
Advantage & disadvantage (IRSAD)
Decile 81,032.6
Higher score / decile = more relative advantage
Economic resources (IER)
Decile 61,040.5
Access to economic resources (income, housing)
Education & occupation (IEO)
Decile 81,023.7
Education and occupational skill levels
Source: ABS SEIFA 2021. See methodology.
Isabella Plains on the map
OpenStreetMap outline for Isabella Plains, ACT.
Map data © OpenStreetMap contributors. Boundary matching is approximate.
Isabella Plains people
- Population
- 4,329
- Median age
- 36
- Born overseas
- 23%
- Average household size
- 2.6
Total usual residents (Census 2021)
Median age of residents in years
Percentage born outside Australia
Average number of people per household
Isabella Plains income
- Median household income
- $2,131/wk
- Median personal income
- $1,084/wk
Median total weekly household income
Median total weekly personal income
Isabella Plains housing
- Median rent
- $450/wk
- Median mortgage repayment
- $1,880/mo
- Separate houses
- 72%
- Flats & apartments
- 0%
- Owned outright
- 26.9%
- Mortgaged
- 46.1%
- Rented
- 18.5%
- Unoccupied dwellings
- 4%
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
Isabella Plains work
- Employment to population
- 66.5%
- Unemployment rate
- 3.4%
- Year 12 or above
- 64.6%
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 2905)
Compare Isabella Plains with nearby suburbs
Isabella Plains in numbers
Isabella Plains had 4,329 residents at the 2021 Census, making it the 43rd most populous suburb or locality in ACT out of 127. The median age is 36, 4% below the typical ACT suburb. The average household has 2.6 people. 23% of residents were born overseas.
Among occupied homes, 26.9% own their home outright, 46.1% are paying a mortgage, 18.5% rent. Separate houses make up 72% of dwellings, with 0% in flats or apartments. Median rent was $450/wk, close to the typical ACT suburb.
Median household income was $2,131/wk, 11% below the typical ACT suburb. The unemployment rate on Census night was 3.4%. 64.6% of adults had completed Year 12 or above. On the ABS SEIFA index of relative socio-economic disadvantage it sits in decile 7 nationally (1 is most disadvantaged, 10 least).
Between the 2016 and 2021 Censuses the population fell 1.7% (from 4,405 to 4,329). Median rent moved from $381/wk to $450/wk (+18.1%).
Isabella Plains suburb FAQs
- What is the median rent in Isabella Plains, ACT?
- The median weekly rent in Isabella Plains was $450/wk at the 2021 Census (ABS).
- How many people live in Isabella Plains, ACT?
- Isabella Plains had 4,329 residents at the 2021 Census, down 1.7% from 2016.
- What is the median household income in Isabella Plains?
- Median household income in Isabella Plains was $2,131/wk at the 2021 Census.
- Do most people rent or own in Isabella Plains?
- 18.5% of occupied homes in Isabella Plains were rented, 26.9% were owned outright and 46.1% were owned with a mortgage.
About this Isabella Plains suburb profile
Figures are from the ABS Census of Population and Housing 2021 (General Community Profile) for the Suburbs and Localities boundary matching Isabella Plains. 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