Isabella Plains, ACT
By Lauren McCaleb · Reviewed by Dylan Duncan ·
More advantaged than the national average
Isabella Plains is more socio-economically advantaged than about 75% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 1033, where about 1000 is the national average).
A socio-economic measure from ABS Census data — not a measure of how good a suburb is to live in or visit. How we calculate this.
Isabella Plains at a glance
- Population (2021)
- 4,329
- Median age
- 36
- Median weekly household income
- $2,131
- SEIFA score
- 1033
- Coordinates
- -35.4292, 149.0951
Isabella Plains demographics (2021 Census)
The figures below profile Isabella Plains using the Australian Bureau of Statistics 2021 Census; every percentage is a share of a clearly stated Census count, so each one traces back to the source. At a glance, the largest age group is young adults (25–44) at 30%, 19% of homes are rented, and 24% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 905 | 21% |
| Youth (15–24) | 479 | 11% |
| Young adults (25–44) | 1,289 | 30% |
| Mid-life (45–64) | 1,067 | 25% |
| Seniors (65+) | 596 | 14% |
Share of the 4,336 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 453 | 28% |
| Owned with a mortgage | 776 | 48% |
| Rented | 311 | 19% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 1,211 | 75% |
| Townhouses & semis | 394 | 25% |
| Flats & apartments | 0 | 0% |
Tenure and dwelling shares are of the roughly 1,605 occupied private dwellings in Isabella Plains.
- Median weekly rent
- $450
- Median monthly mortgage
- $1,880
- Average household size
- 2.6 people
- Median weekly family income
- $2,502
- Median weekly personal income
- $1,084
Community and culture
- Born overseas
- 997 (24%)
- Speaks a language other than English at home
- 875 (21%)
- Aboriginal and/or Torres Strait Islander
- 162 (4%)
Work and education
- Completed Year 12
- 2,119 (65%)
- Labour-force participation
- 68.8%
- Unemployment rate
- 3.4%
- Employed full-time
- 1,516
- Employed part-time
- 593
Source: ABS Census of Population and Housing, 2021 (General Community Profile, by Suburb and Locality). © Australian Bureau of Statistics, released under CC BY 4.0. How we group bands and derive each share is set out on our methodology page.
Weather and climate in Isabella Plains
Based on 2014–2023 records, the warmest month in Isabella Plains is January (average daytime high around 25.4°C) and the coolest is July (around 8.9°C). The area receives roughly 890 mm of rain across the year.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 25.4°C | 13.1°C | 89 mm |
| Feb | 23.9°C | 12.1°C | 71 mm |
| Mar | 20.8°C | 10.4°C | 88 mm |
| Apr | 17°C | 7.1°C | 61 mm |
| May | 12.6°C | 2.9°C | 46 mm |
| Jun | 9.5°C | 1.2°C | 66 mm |
| Jul | 8.9°C | 0.3°C | 42 mm |
| Aug | 10.1°C | 0.3°C | 70 mm |
| Sep | 13.9°C | 2.6°C | 68 mm |
| Oct | 17.6°C | 5.8°C | 87 mm |
| Nov | 20.4°C | 8.2°C | 106 mm |
| Dec | 23.4°C | 10.9°C | 96 mm |
Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).
Common questions about Isabella Plains
Where is Isabella Plains?
Isabella Plains is a suburb of Australian Capital Territory, Australia.
What is the population of Isabella Plains?
At the 2021 Census, Isabella Plains had a population of about 4,329.
Is Isabella Plains an advantaged area?
Isabella Plains has an ABS SEIFA score of 1033, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 75 out of 100 — more socio-economically advantaged than about 75% of Australian suburbs.
What is the weather like in Isabella Plains?
Isabella Plains has average daytime highs of about 17°C and overnight lows of about 6.2°C, with roughly 890 mm of rain across the year (based on 2014–2023 climate normals).
Nearby suburbs in Australian Capital Territory
More suburb guides in Australian Capital Territory
Other hand-written, cited guides — browse all guides.