Isabella Plains

Isabella Plains has shown very soft population growth performance across periods assessed by AreaSearch

As of May 2026, the estimated population of the suburb of Isabella Plains is around 4,324 people. This figure reflects a decrease of 5 people since the 2021 Census, which recorded a population of 4,329. The current estimate is based on AreaSearch's validation of new addresses following the latest ERP data release by the ABS in June 2025. This results in a population density ratio of 1,729 persons per square kilometer, higher than the average seen across national locations assessed by AreaSearch. While Isabella Plains experienced a 0.1% decline since the census, the broader SA3 area saw 1.4% growth, indicating divergent trends within the region. Natural growth contributed approximately 65.0% of overall population gains in recent periods.

For projections, AreaSearch uses ABS/Geoscience Australia data released in 2024 with a base year of 2022 for each SA2 area. For areas not covered by this data and years post-2032, age group growth rates from the ACT Government's SA2 area projections are adopted, using 2022 as the base year. Looking ahead, lower quartile growth is anticipated nationally, with the suburb of Isabella Plains expected to increase by 60 persons to a total population of around 4,384 by 2041, reflecting an approximate 1.4% increase over the 16-year period.

The level of residential development activity in Isabella Plains is very low in comparison to the average area assessed nationally by AreaSearch

AreaSearch analysis of ABS building approval numbers allocated from statistical area data shows Isabella Plains had approximately one new home approved each year over the past five financial years, totalling an estimated five homes. As of FY-26, two approvals have been recorded. The population has fallen during this period, but development activity has been adequate relative to population changes.

There were $67,000 in commercial approvals this financial year, indicating a predominantly residential focus. Compared to the Australian Capital Territory average, Isabella Plains shows significantly reduced construction, with 90.0% fewer approvals per person. This constrained new construction typically reinforces demand and pricing for existing properties. The area's development is also below the national average, suggesting its established nature and potential planning limitations. Recent development has consisted entirely of detached dwellings, maintaining Isabella Plains' suburban identity and catering to buyers seeking space.

Interestingly, developers are building more traditional houses than the current mix suggests at Census, indicating strong demand for family homes. With around 4271 people per dwelling approval, Isabella Plains reflects a highly mature market. According to AreaSearch's latest quarterly estimate, the area is expected to grow by approximately 60 residents by 2041. If current development rates continue, housing supply may not keep pace with population growth, potentially increasing competition among buyers and supporting stronger price growth.

Isabella Plains has moderate levels of nearby infrastructure activity, ranking in the 49thth percentile nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch identified five projects expected to influence the area. Major initiatives include Tuggeranong Public Housing Development, Canberra Light Rail Stage 4 from Woden to Tuggeranong, Banks Gateway Estate, and Dairy Farmers Hill Precinct at 1 Dairy Road. The following list details those most relevant.

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Isabella Plains shows employment indicators that trail behind approximately 70% of regions assessed across Australia

Isabella Plains has a skilled workforce with prominent representation in essential services sectors. The unemployment rate was 5.5% as of the past year, with an estimated employment growth of 0.5%. As of December 2025, 2,283 residents were employed while the unemployment rate stood at 1.7% above the Australian Capital Territory's rate of 3.8%.

Workforce participation was similar to the ACT's 70.5%. According to Census responses, 9.5% of residents worked from home, considering Covid-19 lockdown impacts. Key industries for employment among residents were public administration & safety, health care & social assistance, and construction, with notable concentration in construction at 1.5 times the regional average. Professional & technical services had limited presence with 7.1% employment compared to the regional average of 11.1%.

The area offered limited local employment opportunities as indicated by the Census working population vs resident population count. In the 12-month period ending December 2025, employment increased by 0.5%, labour force by 1.3%, resulting in an unemployment rise of 0.7 percentage points. By comparison, the ACT recorded employment growth of 0.9%, labour force growth of 1.2%, and an unemployment rise of 0.3 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 project national employment to expand by 6.6% over five years and 13.7% over ten years, with varying growth rates between industry sectors. Applying these projections to Isabella Plains' employment mix suggests local employment should increase by 6.5% over five years and 13.3% over ten years, based on a simple weighting extrapolation for illustrative purposes only.

Income metrics indicate excellent economic conditions, with the area achieving higher performance than 75% of national locations assessed by AreaSearch

AreaSearch's latest postcode level ATO data for financial year ending June 2023 shows median income in Isabella Plains is $64,002 and average income is $70,933. This compares to Australian Capital Territory's median of $72,206 and average of $85,981. By March 2026, estimated median income would be approximately $70,684 and average income $78,338, based on Wage Price Index growth of 10.44%. The 2021 Census ranks Isabella Plains' incomes highly nationally, between the 74th and 85th percentiles for household, family, and personal incomes. Income brackets indicate 36.0% of residents (1,556 people) earn $1,500-$2,999 weekly, mirroring broader metropolitan trends at 34.3%. Notably, 31.4% exceed $3,000 weekly. Housing consumes 14.5% of income, and residents rank in the 76th percentile for disposable income. The area's SEIFA income ranking places it in the 6th decile.

Isabella Plains is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership

The dwelling structure in Isabella Plains, as per the latest Census, comprised 75.5% houses and 24.5% other dwellings (semi-detached, apartments, 'other' dwellings). In comparison, Australian Capital Territory had 63.3% houses and 36.7% other dwellings. Home ownership in Isabella Plains stood at 29.3%, with mortgaged dwellings at 50.4% and rented ones at 20.3%. The median monthly mortgage repayment was $1,880, below the Australian Capital Territory average of $2,080. The median weekly rent figure was recorded at $450, similar to the Australian Capital Territory's figure. Nationally, Isabella Plains' mortgage repayments were higher than the Australian average of $1,863, while rents were substantially above the national figure of $375.

Isabella Plains has a typical household mix, with a higher-than-average median household size

Family households constitute 74.3% of all households, including 35.5% couples with children, 24.4% couples without children, and 13.2% single parent families. Non-family households account for the remaining 25.7%, with lone person households at 23.3% and group households comprising 2.3% of the total. The median household size is 2.6 people, which is larger than the Australian Capital Territory average of 2.5.

The educational profile of Isabella Plains exceeds national averages, with above-average qualification levels and academic performance metrics

The area's university qualification rate is 26.3%, significantly lower than the SA4 region average of 46.8%. Bachelor degrees are most common at 17.7%, followed by postgraduate qualifications (5.7%) and graduate diplomas (2.9%). Vocational credentials are held by 36.2% of residents aged 15+, with advanced diplomas at 12.1% and certificates at 24.1%. Educational participation is high, with 29.2% of residents currently enrolled in formal education.

This includes 10.7% in primary education, 7.2% in secondary education, and 4.6% pursuing tertiary education.

Transport servicing is high compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility

Isabella Plains has 24 operational public transport stops, all serving buses. These stops are covered by 52 unique routes, facilitating a total of 3032 weekly passenger trips. The area's transport accessibility is deemed good, with residents residing an average of 226 meters from the nearest stop. Predominantly residential, most Isabella Plains commuters travel outward. Cars remain the primary mode of transport at 93%, while buses account for 5%. Each dwelling owns an average of 1.6 vehicles, exceeding regional averages.

According to the 2021 Census, only 9.5% of residents work from home, which may be influenced by COVID-19 conditions. Across all routes, service frequency stands at 433 trips daily, equating to about 126 weekly trips per individual stop.

Health performance in Isabella Plains is lower than average with common health conditions somewhat prevalent across both younger and older age cohorts

Isabella Plains faces significant health challenges based on AreaSearch's assessment. Mortality rates and chronic condition prevalence are high, with common health conditions prevalent across both younger and older age cohorts.

Private health cover is very high at approximately 55% of the total population (~2,387 people), compared to 62.4% in Australian Capital Territory. The most common medical conditions are asthma (9.3%) and mental health issues (9.2%). 67.1% of residents declare themselves completely clear of medical ailments, compared to 70.2% across Australian Capital Territory. Working-age residents show above average prevalence of chronic health conditions. As of 2021, the area has 17.5% of residents aged 65 and over (756 people), higher than the 14.3% in Australian Capital Territory. Health outcomes among seniors present some challenges, with national rankings broadly in line with the general population.

The level of cultural diversity witnessed in Isabella Plains was found to be slightly above average when compared nationally for a number of language and cultural background related metrics

Isabella Plains, surveyed from July 2016 to June 2021, had a higher cultural diversity than most local markets, with 23.6% of its population born overseas and 20.8% speaking a language other than English at home. Christianity was the predominant religion, accounting for 47.8% of Isabella Plains' population as of June 2021. Notably, the 'Other' religious category comprised 2.3%, higher than the Australian Capital Territory's average of 1.4%.

Regarding ancestry, Australians made up 26.1%, English 25.6%, and Other 9.5% of Isabella Plains' population during this period. Some ethnic groups showed significant differences: Spanish (0.9% vs regional 0.5%), Serbian (0.7% vs 0.4%), and Macedonian (0.5% vs 0.2%) were notably overrepresented in Isabella Plains compared to the region.

Isabella Plains's population is slightly younger than the national pattern

Isabella Plains's median age is nearly 36 years, close to the Australian Capital Territory average of 35 but younger than Australia's average of 38. Compared to the Australian Capital Territory, Isabella Plains has a higher percentage of residents aged 65-74 (9.7%) but fewer residents aged 25-34 (14.3%). Between the 2021 Census and the present, the proportion of residents aged 65-74 has grown from 7.5% to 9.7%, while those aged 75-84 have increased from 4.3% to 5.8%. Conversely, the proportion of residents aged 25-34 has decreased from 15.9% to 14.3%, and the proportion of those aged 55-64 has dropped from 13.0% to 11.6%. By 2041, population forecasts indicate significant demographic changes for Isabella Plains. The 65-74 age group is projected to grow by 21%, adding 89 residents and reaching a total of 509. Residents aged 65 and above are expected to drive 64% of the population growth, highlighting the trend towards an aging demographic. Conversely, population declines are projected for the 0-4 and 55-64 age groups.