Marmion

Marmion has seen population growth performance typically on par with national averages when looking at short and medium term trends

Based on ABS population updates and AreaSearch validation, Marmion's estimated population as of Nov 2025 is around 2,635. This reflects a growth of 245 people since the 2021 Census, which reported a population of 2,390. The increase is inferred from an estimated resident population of 2,582 by AreaSearch following ABS's June 2024 ERP data release and six additional validated new addresses since the Census date. This results in a density ratio of 2,291 persons per square kilometer, above national averages assessed by AreaSearch. Marmion's 10.3% growth since the 2021 census exceeds the national average of 9.7%. Overseas migration contributed approximately 85.0% of overall population gains during recent periods.

AreaSearch uses ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022. For areas not covered by this data and post-2032 growth estimation, AreaSearch utilises ABS's Greater Capital Region projections released in 2023 based on 2022 data. Future population trends project an above median growth for the area, with an expected increase of 355 persons to 2041, reflecting a total increase of 10.5% over the 17 years.

Residential development activity is slightly higher than average within Marmion when compared nationally

AreaSearch analysis of ABS building approval numbers allocated from statistical area data shows Marmion averaging around 9 new dwelling approvals each year over the past five financial years, totalling an estimated 48 homes. As of FY-26, 4 approvals have been recorded. Over these five years, an average of 3 new residents per year was associated with each dwelling, reflecting robust demand that supports property values. New homes were built at an average expected construction cost value of $918,000, indicating a developer focus on the premium segment with upmarket properties.

This financial year, $3.4 million in commercial approvals have been registered, demonstrating Marmion's primarily residential nature. Compared to Greater Perth, Marmion has slightly more development, at 21.0% above the regional average per person over the five-year period, maintaining good buyer choice while supporting existing property values. Recent construction comprises 60.0% detached houses and 40.0% medium and high-density housing, marking a significant shift from the current pattern of 83.0% houses, suggesting diminishing developable land availability and responding to evolving lifestyle preferences and housing affordability needs. The location has approximately 187 people per dwelling approval, indicating an expanding market.

According to AreaSearch's latest quarterly estimate, Marmion is expected to grow by 277 residents through to 2041. Existing development levels seem aligned with future requirements, maintaining stable market conditions without significant price pressures.

Marmion has moderate levels of nearby infrastructure activity, ranking in the 48thth percentile nationally

No changes can significantly affect a region's performance like alterations to its local infrastructure, large-scale projects, and planning initiatives. AreaSearch has identified zero projects expected to impact this area. Notable projects include Ora Sorrento, Seacrest Village Redevelopment, Harbour Rise Masterplanned Community (final stages), and Duncraig Senior High School Redevelopment, with the following list detailing those most relevant.

Professional plan users can use the search below to filter and access additional projects.

Denotes AI-based impression for illustrative purposes only, not to be taken as definitive under any circumstances. Please follow links and conduct other investigations from the project's source for actual imagery. Developers and project owners wishing us to use original imagery please Contact Us and we will do so.

AreaSearch analysis of employment trends sees Marmion performing better than 90% of local markets assessed across Australia

Marmion has an educated workforce with professional services well represented. The unemployment rate was 0.9% in the past year, with estimated employment growth of 3.5%.

As of September 2025, 1,425 residents are employed, with an unemployment rate of 3.1%, below Greater Perth's 4.0%. Workforce participation is equal to Greater Perth's 65.2%. Employment is concentrated in education & training, health care & social assistance, and construction, notably high in the former at 1.5 times the regional average. Retail trade shows lower representation at 7.4% versus the regional average of 9.3%.

Limited local employment opportunities are indicated by Census working population vs resident population counts. In the past year, employment increased by 3.5%, labour force by 3.4%, reducing unemployment by 0.1 percentage points. This contrasts with Greater Perth's 2.9% employment growth and marginal unemployment rise. State-level data to 25-Nov shows WA employment contracted by 0.27%, unemployment rate at 4.6%. National employment forecasts from May-25 project a 6.6% increase over five years and 13.7% over ten years, varying significantly between sectors. Applying these projections to Marmion's employment mix suggests local employment should increase by 6.7% over five years and 13.7% over ten years.

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

In AreaSearch's aggregation of ATO data released for financial year 2023, Marmion suburb had a median income among taxpayers of $65,526 and an average level of $103,275. Nationally, these figures are in the top percentile, compared to Greater Perth's levels of $60,748 and $80,248 respectively. As of September 2025, estimated incomes would be approximately $71,830 (median) and $113,210 (average), based on a 9.62% Wage Price Index growth since financial year 2023. In the 2021 Census, Marmion's household, family, and personal incomes ranked highly nationally, between the 80th and 88th percentiles. Income analysis showed that 30.8% of individuals earned over $4,000 per week (811 individuals), contrasting with the region where the $1,500 - 2,999 bracket led at 32.0%. The suburb demonstrated affluence with 43.0% earning over $3,000 per week, supporting premium retail and service offerings. After housing costs, residents retained 87.8% of income, reflecting strong purchasing power, and the area's SEIFA income ranking placed it in the 9th decile.

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

Marmion's dwelling structure, as per the latest Census, consisted of 83.2% houses and 16.9% other dwellings (semi-detached, apartments, 'other' dwellings). In comparison, Perth metro had 88.7% houses and 11.3% other dwellings. Home ownership in Marmion was 48.7%, with the rest being mortgaged (40.0%) or rented (11.4%). The median monthly mortgage repayment in Marmion was $2,600, higher than Perth metro's average of $2,080. The median weekly rent in Marmion was $495, compared to Perth metro's $400. Nationally, Marmion's mortgage repayments were significantly higher than the Australian average of $1,863, and rents were substantially above the national figure of $375.

Marmion features high concentrations of family households, with a fairly typical median household size

Family households constitute 81.4% of all households, including 39.0% couples with children, 32.2% couples without children, and 8.1% single parent families. Non-family households account for 18.6%, comprising 17.5% lone person households and 1.8% group households. The median household size is 2.7 people, aligning with the Greater Perth average.

Educational achievement in Marmion places it within the top 10% nationally, reflecting strong academic performance and high qualification levels across the community

Educational attainment in Marmion is notably high, with 40.3% of residents aged 15 and above holding university qualifications as of the latest data. This compares to state figures of 27.9% in Western Australia and 29.0% in the SA4 region. The most common university qualification is a Bachelor degree, held by 28.6%. Postgraduate qualifications are held by 7.3%, and graduate diplomas by 4.4%.

Vocational credentials are also prevalent, with 31.1% of residents aged 15 and above holding them. This includes advanced diplomas (10.9%) and certificates (20.2%). Educational participation is high, with 30.3% currently enrolled in formal education. This includes 11.3% in primary education, 9.4% in secondary education, and 5.4% pursuing tertiary education.

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

Marmion has nine active public transport stops operating, all of which are bus stops. These stops are served by two different routes that together facilitate 480 weekly passenger trips. The accessibility of these services is rated as good, with residents typically located 214 meters away from the nearest stop.

On average, there are 68 trips per day across all routes, which amounts to approximately 53 weekly trips per individual stop.

Marmion's residents are extremely healthy with both young and old age cohorts seeing low prevalence of common health conditions

Analysis shows Marmion's health metrics are strong across all ages. Both young and old age cohorts have low prevalence of common conditions. Private health cover is high at approximately 68%, with 1,797 people covered, compared to Greater Perth's 60.2% and the national average of 55.7%.

The most common conditions are arthritis (7.8%) and asthma (6.8%), while 73.6% report no medical ailments, slightly higher than Greater Perth's 71.5%. Marmion has 24.8% residents aged 65 and over (653 people), more than Greater Perth's 20.1%. Health outcomes among seniors are particularly strong, outperforming the general population in health metrics.

Marmion ranks below the Australian average when compared to other local markets across a number of language and cultural background related metrics

Marmion's cultural diversity was found to be below average, with 78.3% of its population born in Australia, 93.6% being citizens, and 94.6% speaking English only at home. Christianity was the main religion in Marmion, comprising 50.9% of people, while Judaism was overrepresented at 0.3%, compared to 0.1% across Greater Perth. The top three ancestry groups were English (32.8%), Australian (26.2%), and Irish (8.2%).

Notably, South African (2.1%) and Dutch (2.0%) ethnicities were overrepresented in Marmion compared to the regional averages of 1.8% and 1.7%, respectively, while Macedonian ethnicity was also higher at 0.7%.

Marmion hosts a notably older demographic compared to the national average

The median age in Marmion is 45 years, which is significantly higher than Greater Perth's average of 37 years and Australia's national average of 38 years. Compared to Greater Perth, Marmion has a higher proportion of residents aged 65-74 (13.1%) but fewer residents aged 25-34 (5.7%). According to the 2021 Census, the age group of 75 to 84 has grown from 5.9% to 9.3%, while the 15 to 24 cohort increased from 10.6% to 12.0%. Conversely, the 65 to 74 cohort has declined from 14.4% to 13.1%, and the 45 to 54 age group dropped from 14.2% to 13.1%. By 2041, demographic projections indicate significant shifts in Marmion's age structure. The 75 to 84 age group is expected to grow by 63%, reaching 400 people from the current 245. Notably, the combined age groups of 65 and above will account for 73% of total population growth, reflecting Marmion's aging demographic trend. In contrast, both the 65 to 74 and 0 to 4 age groups are projected to decrease in numbers.