Trigg
High household incomes, detached housing and an older age profile shape Trigg more than rapid redevelopment. The suburb has 2,855 residents, a median age of 43, and household income at the 96th percentile nationally. Separate houses account for 86.8% of dwellings, while 50.9% hold a university qualification, 20.8 percentage points above the national level. Compared with nearby Karrinyup and Scarborough, Trigg reads as a smaller, established coastal market: 75.0% drive to work and only 1.6% use public transport. That profile supports a settled, professional household base rather than a high-turnover renter market.
Local council: Stirling
Population
2,855
Median Age
43.0
Household IncomeiMedian weekly household income (ABS Census)
$2,779/wk
DAs (12 months)iDevelopment Applications lodged in the past year
60
Trigg suits buyers prioritising detached space and established ownership over apartment living. Separate houses make up 86.8% of dwellings, with 51.1% containing 4 or more bedrooms and 36.7% containing 3 bedrooms; apartments account for 0.3%, so stock is more family-sized than compact. Outright ownership is 46.6%, higher than the 37.3% mortgaged share and 11.1% renting. The $3,000 monthly mortgage figure should be tested against deposit, rates and maintenance, while mortgage costs equal 24.9% of household income compared with 17.5% for rent. Buyers should use recent settled sales to judge value rather than rely on a suburb-wide average.
For Buyers
Trigg suits buyers prioritising detached space and established ownership over apartment living. Separate houses make up 86.8% of dwellings, with 51.1% containing 4 or more bedrooms and 36.7% containing 3 bedrooms; apartments account for 0.3%, so stock is more family-sized than compact. Outright ownership is 46.6%, higher than the 37.3% mortgaged share and 11.1% renting. The $3,000 monthly mortgage figure should be tested against deposit, rates and maintenance, while mortgage costs equal 24.9% of household income compared with 17.5% for rent. Buyers should use recent settled sales to judge value rather than rely on a suburb-wide average.
For Investors
Trigg has a narrow rental pool but a meaningful cash-flow test. Only 11.1% of households rent, while weekly rent is $485 and vacancy is 8.0%; compared with a rental-led suburb, that points to a smaller tenant base but potentially more leasing choice when vacancies rise. Development activity is material, with 52 applications in 12 months, including an ancillary dwelling check, a patio and a single-house application. Rent growth of 22.7% supports recent income momentum, while forecast growth is 0.99% annually and driven by overseas migration. Investors should weigh that slower growth rate against the suburb's predominantly detached stock.
Development Activity
Total DAs
60
Last 12 Months
60
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
Demographics
Trigg's demographic profile is older and more university educated than the national pattern. Median age is 43, which is 3 years above the national figure, and university attainment is 50.9%, or 20.8 percentage points higher. Overseas-born residents account for 22.7%, just 1.1 points above national, so the suburb is internationally connected without a migrant-majority profile. Reported ancestry is led by English 1,193, Irish 348, Scottish 313 and Italian 259, while Christianity totals 1,393 and no religion 1,262. Average household size is 2.7, 0.2 above national, and 79.5% stayed at the same address, supporting a settled household pattern. The age and education mix helps explain demand for larger homes and professional services.
Age Distribution
Bedrooms
Dwelling Structure
86.8%
Houses
12.9%
Townhouse
0.3%
Apartment
Tenure
Trigg's housing stock is overwhelmingly detached and skewed toward larger dwellings, which matters more than a simple suburb average for buyers. Separate houses represent 86.8% of homes, versus 0.3% apartments and 12.9% semi-detached dwellings. Four or more bedrooms account for 51.1%, compared with 36.7% for 3 bedrooms. Tenure is also ownership-heavy: 46.6% own outright and 37.3% have a mortgage, while 11.1% rent. The $485 weekly rent sits alongside an 8.0% vacancy rate, and housing costs are 17.5% of renter income compared with 24.9% for mortgage holders. That lower rent burden than mortgage burden may support retention, while the 22.7% rent growth rate warrants close monitoring.
Mortgage / mo
$3,000
Rent / wkiABS Census 2021 median across all dwelling types. Current market rents are typically higher.
$485
Census 2021
HH Size
2.7
Personal Income / wk
$1,110
Vacancy Ratei% of dwellings unoccupied on Census night (ABS 2021)
8.0%
Unoccupied
87
Rent / IncomeiMedian rent as % of household income. Over 30% = housing stress
17.5%
Mortgage / IncomeiMedian mortgage as % of household income. Over 30% = housing stress
24.9%
Community Profile
Languages Spoken at Home
Ancestry
Household Composition
52.7%
Couples with children
38.2%
Couples, no children
7.7%
Single parent
791
Total families
Economy & Employment
Trigg's economic base is led by healthcare at 16.6% with 178 workers, Professional/Tech at 15.5% with 166, and Education at 12.8% with 137. Construction contributes 10.9% and 117 workers, while Mining contributes 8.5% and 91. Occupations reinforce a skilled profile: Professionals number 520 and Managers 268, ahead of Clerical/Admin at 158 and Trades at 141. Unemployment is 3.4%, participation is 65.8%, and full-time employment is 53.1%, supporting household income of $2,779 weekly. SEIFA is in decile 9 for IEO, IER and IRSAD, with IRSD in decile 10, all above the national midpoint. That signals stronger socioeconomic conditions than lower-decile areas, although sector exposure still matters.
Unemployment
3.4%
Labour Force
1,532
Unemployed
52
Source: ABS Census 2021
Socio-Economic Indexes (SEIFA)iABS index ranking suburbs from 1 (most disadvantaged) to 10 (most advantaged)
Full-time
53.1%
Part-time
41.1%
Participation
65.8%
Employed
1,480
Full-time and part-time are shares of the employed. Source: ABS Census 2021
Occupations
Top Industries
University
50.9%
Postgraduate
11.8%
Born Overseas
22.7%
Dwellings
999
Transport to Work
Trigg's compact 2.38 sq km footprint and density of 1,200.7 residents per sq km support a concentrated local setting, but daily travel is car-oriented. About 75.0% drive to work, compared with 1.6% using public transport and 2.1% walking or cycling; 17.0% work from home. That pattern makes parking, road access and car costs more important than transit frequency. Families should confirm school options and enrolment zones against the exact address, then compare travel times and sector choices. Volunteering is 22.9%, while 3.1% need assistance. IRSAD is decile 9 and IRSD decile 10, above the national midpoint. Check current local safety information before making a street-level decision, as conditions can vary.
Drive
75.0%
Public Transport
1.6%
Walk / Cycle
2.1%
Work from Home
17.0%
Growth Outlook
Trigg is an established suburb with measured growth rather than a rapid expansion profile. Forecast trend is 0.99% annually, with overseas migration identified as the primary driver. The wider area records 15.0% population change over 10 years, while the shift trajectory is Aging: senior share has increased 6.1 percentage points and working share has fallen 5.5 points. Gentrification is scored at 22 and classified as Early signs, so renewal appears incremental rather than transformative. Rent growth of 22.7% and real income growth of 5.9% show stronger movement in household economics than the annual population trend. Compared with growth corridors, Trigg's appeal rests on established housing and gradual change.
Population trend: Stirling council area
Trigg sits in the Stirling council area. These are the council area's residents, not Trigg's.
Residents 2025
254,821
Growth, 5 yr average
+1.9%/yr
2020 to 2025
Growth, last year
+1.6%
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 Trigg compares to ~15,000 Australian suburbs
Frequently Asked Questions
Is Trigg a good suburb to live in?
Trigg can suit households seeking a settled, higher-income area with detached homes. It has 2,855 residents, a median age of 43 and 86.8% separate houses. Compared with more apartment-focused locations, its 51.1% share of 4 or more bedroom homes supports family-sized living, while 75.0% car commuting makes transport planning important.
What is the median house price in Trigg?
Buyers should use recent settled sales to establish the current median because a single figure can hide differences across Trigg's mostly detached stock. Separate houses account for 86.8% of dwellings, 51.1% have 4 or more bedrooms and 46.6% are owned outright. The outright ownership share is higher than the 37.3% mortgaged share.
What schools are in Trigg?
School options and enrolment zones should be confirmed for the exact address, as boundaries can affect access. Trigg has 2,855 residents, 17.0% work from home and 75.0% drive to work, so families should compare school travel times, transport needs and sector choices rather than rely on suburb name alone.
Is Trigg safe?
Street-level safety should be checked through current WA Police and council information before purchase or renting. Trigg has 2,855 residents and a density of 1,200.7 people per sq km, while 75.0% drive to work. Compare the exact street's traffic, parking and incident context with nearby areas before making a decision.
Is Trigg good for property investment?
It can suit investors seeking established detached housing and recent rental momentum, but the numbers need careful weighing. Weekly rent is $485, vacancy is 8.0% and rent growth is 22.7%. Only 11.1% rent, so the tenant pool is smaller than in rental-led suburbs; forecast growth is 0.99% annually.
How is Trigg's population changing?
Trigg's population is changing gradually, with forecast growth of 0.99% a year and 15.0% population change across the wider area over 10 years. Overseas migration is the primary driver, but the trajectory is Aging: senior share is up 6.1 points and working share is down 5.5 points. Compared with younger growth areas, the shift is more mature.
What development is occurring in Trigg?
Recent applications include an ancillary dwelling check, a patio project and a single-house application with 1 dwelling. There were 52 applications in 12 months. Compared with a major redevelopment pipeline, this points to incremental additions that may refresh existing properties without changing the suburb's detached character quickly.
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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