Isabella Plains
ACTIsabella Plains is a declining suburb in ACT with 4,329 residents.
- SAL code
- 80079
- SA2
- 801071081
- Population
- 4,329
- LGA
- Unincorporated ACT
Isabella Plains, ACT had 4,329 residents at the 2021 Census, with the broader statistical area roughly steady over the last five years. The predominant age group is 25-34 years, and the median age sits at 36. Households are most often couples with children, and those with a mortgage repay a median of $1,880 a month. Around 79.8% of homes are owner-occupied, with the largest single tenure being owned with a mortgage at 50.4%. Most dwellings are separate houses, making up 75.5% of the suburb's housing stock. The suburb has 2 parks and reserves mapped within its boundary. Source: ABS Census 2021 and Estimated Resident Population, with amenity counts from state Open Data and OpenStreetMap.
Population
?4,329
Suburb · Census 2021
5-Year Growth
-0.4%
3yr: +0.1% · 10yr: -2.0%
SA2 · 5yr
Household Income
$2,131/wk
Suburb · Census 2021 median
Median Age
36
Suburb · Census 2021
Socio-Economic Index
?7/10
SA2 · middle-range
Unemployment
?5.5%
SA4 · Q4 2025
Schools
2
1 primary, 1 secondary
Hospitals
No data for this suburb
Childcare services
?3
2 long day, 1 OSHC
Parks & green space
OpenStreetMap parks data not yet loaded for ACT
Transport stops
?25
GTFS stops
Dwelling approvals
No council coverage for this area
Unincorporated ACT
Median Weekly Rent
state rental-bond data not yet loaded for ACT
Median House Sale Price
state Valuer-General sale price data not yet loaded for ACT
Safety & Crime
2025 Q2Reported incidents from ACT police. Offence rates may not reflect all crime.
Population over time — Isabella Plains (SA2)
ABS publishes annual estimates only at SA2; Isabella Plains suburb alone is ~4,329 (Census 2021).
Growth at a Glance
Population grew from 4,590 to 4,324 over 24 years, averaging -0.2% per year.
Schools
2 in suburbGovernment school catchment
Intake zonePrimary
Monash Primary School100.0%
- Richardson Primary School 99.9%
- Bonython Primary School 99.9%
- Calwell Primary School 0.0%
- Gowrie Primary School 0.0%
- Gordon Primary School 0.0%
Secondary
Calwell High School99.9%
- Wanniassa School (7-10) 0.1%
- Lanyon High School 0.0%
- Caroline Chisholm School (7-10) 0.0%
Source: ACT Education Directorate (via ACTMAPi). Boundaries can be amended without notice; confirm with the school before relying on enrolment.
Profile
Census snapshot
Housing
Public housing 2.4%Almost entirely detached houses (75.5%), owner-occupied (80%), built for families (60% are 3 bed).
Dwelling mix
Tenure
Number of bedrooms
Bushfire & flood risk
Bushfire
Source: ACT ESA Bushfire Prone Areas (SBMP)
As of May 2026
Flood
Source: ACT Floodplain Mapping
As of May 2026
Overlap is the percentage of the suburb's land area inside the mapped hazard polygons. Always verify the exact property address with the relevant authority before making decisions.
Planning zones
6 zones in suburb| Code | Zone | % covered | Area |
|---|---|---|---|
| RZ1 | SUBURBANResidential | 45.3% | 1.13 km² |
| PRZ1 | URBAN OPEN SPACERecreation | 19.5% | 0.49 km² |
| TSZ1 | TRANSPORTSpecial use | 16.2% | 0.40 km² |
| RZ2 | SUBURBAN COREResidential | 10.1% | 0.25 km² |
| CF | COMMUNITY FACILITIESSpecial use | 8.6% | 0.21 km² |
| CZ4 | LOCAL CENTREBusiness | 0.3% | 7,424 m² |
Source: ACT Territory Plan 2023 Zones (ZONE_ACT/2026-04-30/5851ce8c0d6a6718) · As of Apr 2026. Zone boundaries are amended periodically; verify the exact property with the relevant council before relying on permitted use.