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Australian Capital Territory · Postcode 2905
Isabella Plains postcode and suburb data
Australian Capital Territory · Phone area code 02 · 17 km from Canberra
Suburb snapshot
Isabella Plains at a glance vs ACT
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against ACT
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Isabella Plains ranks: household income sits in the bottom 25% of ACT suburbs.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Isabella Plains vs the ACT average and the national average, using population-weighted 2021 Census data.
| Metric | Isabella Plains | ACT avg | AU avg | Greater Canberra |
|---|---|---|---|---|
| Household income/wk | $2,131 -ACT | $2,444 | $1,836 | $2,445 |
| Rent/wk | $450 ≈ACT | $446 | $390 | $447 |
| Mortgage/month | $1,880 -ACT | $2,115 | $1,958 | $2,115 |
| Median age | 36 | 37.5 | 45.0 | 37.0 |
| SEIFA decile | 8/10 -ACT | 10.0/10 | 6.0/10 | 10.0/10 |
| Unemployment | 3.4% -ACT | 4.0% | 5.0% | 4.0% |
Green pill = at least 10% above the ACT average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Postcode 2905 covers Isabella Plains, an inland suburb of Canberra about 17 km from the city centre. It forms part of the Australian Capital Territory region of Australian Capital Territory. Local government services are provided by Unincorporated ACT.
According to the 2021 Census, Isabella Plains has a population of 4,329 with a median age of 36. The median weekly household income is $2,131, below the ACT average. The unemployment rate is 3.4%, lower than the ACT average. The Indigenous population is 162 (3.7% of residents).
Housing in Isabella Plains includes a median weekly rent of $450, median monthly mortgage repayment of $1,880, with 1,613 total dwellings. Housing costs in the area sit below the ACT average. Owner-occupied dwellings (owned or mortgaged) make up 79.8% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Isabella Plains scores in decile 8 out of 10, which is above the national average.
Schools in Isabella Plains include St Mary MacKillop College and Isabella Plains Early Childhood School.
Isabella Plains is part of the Tuggeranong statistical area in Australian Capital Territory.
Isabella Plains details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 2905 |
| State | Australian Capital Territory (ACT) |
| Phone Area Code | 02 |
| Population (2021) | 4,329 |
| Median Age | 36 years |
| Median Household Income (Census 2021) | $2,131/week |
| Median Personal Income (Census 2021) | $1,084/week |
| Median Weekly Rent (Census 2021) | $450 |
| Median Monthly Mortgage (Census 2021) | $1,880 |
| Average Household Size | 2.6 persons |
| Area | 2.5 km² |
| Population Density | 1735/km² |
| Total Dwellings | 1,613 |
| Australian Citizens | 91.8% |
| Indigenous Population | 162 (3.7%) |
| Unemployment Rate | 3.4% |
| SEIFA IRSAD Decile | 8/10 (above average) |
| Latitude | -35.428 |
| Longitude | 149.095 |
| Distance from Canberra | 17 km |
| Region (SA4) | Australian Capital Territory |
| Area (SA3) | Tuggeranong |
| Local Government | Unincorporated ACT |
| Federal Electorate | Bean |
| State Electorate | Brindabella |
| Time Zone | AEST (UTC+10), Australia/Sydney (standard time) |
Age Profile
Show counts
| 0–14 years | 905 (20.9%) |
| 15–24 years | 479 (11.1%) |
| 25–44 years | 1,289 (29.8%) |
| 45–64 years | 1,067 (24.6%) |
| 65+ years | 596 (13.8%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 464 (10.7%) |
| Arthritis | 388 (9.0%) |
| Diabetes | 227 (5.2%) |
| Heart Disease | 138 (3.2%) |
| Cancer | 112 (2.6%) |
| Lung Condition | 84 (1.9%) |
| Dementia | 17 (0.4%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 61 (3.8%) |
| 1 vehicle | 542 (33.8%) |
| 2 vehicles | 636 (39.7%) |
| 3+ vehicles | 363 (22.7%) |
Schools in Isabella Plains
ACARA 2025 school profiles for schools located in Isabella Plains. ICSEA is shown where ACARA publishes it.
Suburbs Near Isabella Plains
Same Postcode (2905)
More Isabella Plains Data
Page last reviewed . Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 IRSAD, ACARA school profiles 2025. How this data is sourced.