Marmion
An established coastal suburb with 2,390 residents, Marmion combines a median age of 45, a household income percentile of 91.3, and an 83.2% separate-house share. Age sits 5.0 years above the national figure, while 64.2% of homes have 4 or more bedrooms, helping explain the settled, family-oriented profile. Unlike the broader settings around Sorrento and Karrinyup, Marmion is compact at 1.15 square kilometres and 48.5% of residents own outright. That combination supports stability, but buyers need to assess individual homes because a current median sale price is unavailable.
Local council: Joondalup
Population
2,390
Median Age
45.0
Household IncomeiMedian weekly household income (ABS Census)
$2,435/wk
DAs (12 months)iDevelopment Applications lodged in the past year
5
Buyers are choosing a detached, established market rather than an apartment-led one: 83.2% of dwellings are separate houses versus 1.2% apartments, and 64.2% contain 4 or more bedrooms. A current median house price is unavailable, so recent comparable sales matter more than a headline estimate. Monthly mortgage costs are $2,600, equal to 24.7% of household income, while rent is $495 a week and rent-to-income is 20.3%, with both stress flags false. With 48.5% owned outright and 40.2% mortgaged, Marmion suits long-term households, although its 1.15 square kilometre footprint can limit choice compared with larger suburbs.
For Buyers
Buyers are choosing a detached, established market rather than an apartment-led one: 83.2% of dwellings are separate houses versus 1.2% apartments, and 64.2% contain 4 or more bedrooms. A current median house price is unavailable, so recent comparable sales matter more than a headline estimate. Monthly mortgage costs are $2,600, equal to 24.7% of household income, while rent is $495 a week and rent-to-income is 20.3%, with both stress flags false. With 48.5% owned outright and 40.2% mortgaged, Marmion suits long-term households, although its 1.15 square kilometre footprint can limit choice compared with larger suburbs.
For Investors
Rental investors face a small tenant pool, with only 10.7% of dwellings rented, but the weekly rent is $495 and vacancy is 7.9%, giving renters more choice than in a tightly supplied market. Rent growth reached 12.9%, while 3 development approvals were recorded across the latest 12 months, so competing new supply is limited. Household income ranks at the 91.3 percentile, above national norms, which can support payment capacity, and overseas migration is the primary forecast growth driver. Compared with rental-heavy markets, Marmion's owner base may reduce leasing depth, making property condition and exact street position important.
Development Activity
Total DAs
5
Last 12 Months
5
YoY ChangeiYear-over-year change in DA lodgements
—
Avg DA CostiAverage estimated cost per DA in the past year
N/A
Monthly DA Lodgements
DA Categories
Schools in Marmion
Open-register school locations for education access. This is not a school-quality ranking.
MARMION PRIMARY SCHOOL
Demographics
Marmion's median age is 45, or 5.0 years above the national figure, and its forecast trajectory is Aging. Couples with children make up 47.9% of families, while couples without children account for 40.4%, consistent with 2.7 people per household. University attainment is 45.6%, 15.5 percentage points above national, supporting 402 professionals and 215 managers. Overseas-born residents represent 21.7%, only 0.1 percentage points above the national comparison. English ancestry leads at 1,116 responses, followed by Irish at 278 and Scottish at 252, giving Marmion an Anglo-leaning profile.
Age Distribution
Bedrooms
Dwelling Structure
83.2%
Houses
15.7%
Townhouse
1.2%
Apartment
Tenure
Detached housing defines Marmion: 83.2% of dwellings are separate houses, 15.7% are semi-detached and just 1.2% are apartments. The bedroom mix is similarly spacious, with 64.2% containing 4 or more bedrooms, 25.0% three bedrooms and 9.3% two bedrooms. Tenure is more ownership-focused than rental-focused, with 48.5% owned outright, 40.2% under mortgage and 10.7% rented. That structure supports residential stability because 84.0% of residents stayed at the same address, while the 7.9% vacancy rate gives some flexibility. Compared with higher-density housing markets, Marmion provides fewer compact options, and the missing median price means buyers should compare recent sales by land, condition and bedroom count.
Mortgage / mo
$2,600
Rent / wkiABS Census 2021 median across all dwelling types. Current market rents are typically higher.
$495
Census 2021
HH Size
2.7
Personal Income / wk
$1,014
Vacancy Ratei% of dwellings unoccupied on Census night (ABS 2021)
7.9%
Unoccupied
72
Rent / IncomeiMedian rent as % of household income. Over 30% = housing stress
20.3%
Mortgage / IncomeiMedian mortgage as % of household income. Over 30% = housing stress
24.7%
Community Profile
Languages Spoken at Home
Ancestry
Household Composition
47.9%
Couples with children
40.4%
Couples, no children
10.7%
Single parent
691
Total families
Economy & Employment
Education leads Marmion's employment base at 15.7% and 139 workers, followed by healthcare at 14.4% and 127, professional or technical work at 13.2% and 117, construction at 11.5% and 102, and mining at 8.8% and 78. Professionals number 402 and managers 215, matching a household income percentile of 91.3. The unemployment rate is 3.6% across a labour force of 1,249, while participation is 65.0%. SEIFA is strong across all four measures: IEO decile 9, IER decile 10, IRSD decile 10 and IRSAD decile 10, placing Marmion above national socioeconomic levels. The 612 people not in the labour force likely reflects the older profile, with age 45 sitting 5.0 years above national.
Unemployment
3.6%
Labour Force
1,249
Unemployed
45
Source: ABS Census 2021
Socio-Economic Indexes (SEIFA)iABS index ranking suburbs from 1 (most disadvantaged) to 10 (most advantaged)
Full-time
54.1%
Part-time
40.9%
Participation
65.0%
Employed
1,204
Full-time and part-time are shares of the employed. Source: ABS Census 2021
Occupations
Top Industries
University
45.6%
Postgraduate
9.2%
Born Overseas
21.7%
Dwellings
837
Transport to Work
Daily life is car-oriented: 75.5% travel as car drivers versus 2.6% using public transport, while 17.1% work from home. Marmion Primary School provides government primary schooling locally; families should check enrolment zones and secondary access against the exact address. An IRSAD decile of 10 and IRSD decile of 10 place Marmion in the top national socioeconomic tier, while 22.2% volunteering supports local participation. No suburb-level crime rate is available, so current WA Police information and an inspection at different times are sensible checks. With 3.3% needing assistance and 2,390 residents, the compact 1.15 square kilometre setting suits short local trips better than households seeking broad public transport choice.
Drive
75.5%
Public Transport
2.6%
Walk / Cycle
1.4%
Work from Home
17.1%
Growth Outlook
Growth runs at 0.56% a year, driven primarily by overseas migration, while population change across the wider area is 6.9% over 10 years. Marmion's forecast trajectory is Aging: the senior share rises 9.4 percentage points and the working share falls 7.1 points, consistent with a median age 5.0 years above national. Gentrification is labelled Not gentrifying, with a score of 15, although the wider shift signal is Early signs at 20. This points to incremental renewal rather than rapid transformation, with 3 development approvals in 12 months. The measured growth rate means demand rests mainly on established housing, limited turnover and overseas migration.
Population trend: Joondalup council area
Marmion sits in the Joondalup council area. These are the council area's residents, not Marmion's.
Residents 2025
176,595
Growth, 5 yr average
+1.5%/yr
2020 to 2025
Growth, last year
+1.4%
2024 to 2025
ABS Estimated Resident Population by LGA, 30 June each year; council area, not this suburb
National Ranking iPercentile rank among ~15,000 AU suburbs. 90% = higher than 90% of suburbs
How Marmion compares to ~15,000 Australian suburbs
Frequently Asked Questions
Is Marmion a good suburb to live in?
Marmion suits households that prefer established detached housing and can rely on a car. The suburb has a median age of 45, 83.2% separate houses, 64.2% with 4 or more bedrooms and an IRSAD decile of 10. Public transport use is 2.6%, so daily convenience depends more on driving than in transit-oriented areas.
What is the median house price in Marmion?
A current median house price is not available. Buyers can assess the market through recent comparable sales, noting that 83.2% of dwellings are separate houses, 64.2% have 4 or more bedrooms and monthly mortgage costs are $2,600. Land size, condition and renovation level will materially affect each result.
What schools are in Marmion?
Marmion Primary School is the local government primary school. Families should confirm the enrolment zone for the exact address and investigate secondary options nearby, because school access can cross suburb boundaries. Marmion has 2,390 residents and a median age of 45, so household needs vary from family schooling to later-life convenience.
Is Marmion safe?
No suburb-level crime rate is available, so safety should be checked using current WA Police information and by visiting the street during daytime and evening. Marmion's 84.0% resident retention and 48.5% outright ownership indicate a settled housing base, but current address-level checks remain important.
Is Marmion good for property investment?
Marmion can suit investors seeking an established, owner-oriented market, but the rental base is only 10.7%. Weekly rent is $495, vacancy is 7.9%, rent growth is 12.9% and just 3 development approvals were recorded in 12 months. Overseas migration drives forecast growth at 0.56% annually, while the 91.3 household income percentile supports a strong-income environment.
How is Marmion's population changing?
The suburb has 2,390 residents today. Growth runs at 0.56% annually and population change across the wider area is 6.9% over 10 years, with overseas migration the primary driver. The trajectory is Aging: the senior share has risen 9.4 percentage points while the working share has fallen 7.1 points. Gentrification is currently labelled Not gentrifying, with a score of 15.
How to read these comparisons
Phrases like "above the national average" reference the unweighted median across Australian suburbs with more than 1,000 residents, not population-weighted national figures. Suburb-level medians are more useful for ranking suburbs against each other; ABS census headlines are population-weighted (so dominated by Sydney and Melbourne) and can read very differently.
Current baseline (refreshed 2026-05-10): median age 40, university-educated 30.1%, born overseas 21.6%, average household size 2.5 people.
Data sources: ABS 2021 Census (demographics, income, tenure), state education open registers (school locations), state Crime Statistics agencies (offences), council DA portals (development applications).
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