Trigg

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

Based on analysis of ABS population updates for the broader area, and new addresses validated by AreaSearch, the population of Trigg is estimated at around 3146 as of Feb 2026. This reflects an increase of 291 people (10.2%) since the 2021 Census, which reported a population of 2855 people. The change is inferred from the resident population of 3144, estimated by AreaSearch following examination of the latest ERP data release by the ABS in June 2024 and an additional 18 validated new addresses since the Census date. This level of population equates to a density ratio of 1321 persons per square kilometer, which is above the average seen across national locations assessed by AreaSearch. Trigg's 10.2% growth since the 2021 census exceeded the national average (9.9%), marking it as a growth leader in the region. Population growth for the area was primarily driven by overseas migration that contributed approximately 72.0% of overall population gains during recent periods, although all drivers including natural growth and interstate migration were positive factors.

AreaSearch is adopting ABS/Geoscience Australia projections for each SA2 area, as released in 2024 with 2022 as the base year. For any SA2 areas not covered by this data, and to estimate growth across all areas in the years post-2032, AreaSearch is utilising the growth rates by age cohort provided by the ABS in its latest Greater Capital Region projections (released in 2023, based on 2022 data). As we examine future population trends, an above median population growth of national statistical areas is projected, with the suburb expected to increase by 608 persons to 2041 based on aggregated SA2-level projections, reflecting a gain of 19.2% in total over the 17 years.

Recent residential development output has been above average within Trigg when compared nationally

AreaSearch analysis of ABS building approval numbers for Trigg shows around 10 new homes approved annually over the past five financial years, totalling an estimated 54 homes. As of FY26, 7 approvals have been recorded. On average, 4.4 people move to the area per year for each dwelling built between FY21 and FY25, indicating substantial demand-supply mismatch leading to heightened buyer competition and pricing pressures.

Developers target the premium market segment with new dwellings averaging $1,442,000 in construction cost value. Compared to Greater Perth, Trigg has 18.0% less new development per person but ranks among the 70th percentile nationally. Recent activity is below national average, suggesting established nature and potential planning limitations. New development consists of 83.0% detached dwellings and 17.0% attached dwellings, maintaining Trigg's traditional suburban character focused on family homes.

With around 188 people per dwelling approval, Trigg exhibits growth area characteristics. By 2041, AreaSearch estimates Trigg will grow by 603 residents. At current development rates, housing supply may struggle to match population growth, potentially intensifying buyer competition and supporting price increases.

Trigg has moderate levels of nearby infrastructure activity, ranking in the 45thth percentile nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch identified four projects potentially affecting this region: Sorrento Beach Estate - Stage 3 Release, Karrinyup Bus Depot Transformation, Coastal Boardwalk Feasibility Study, and Star Swamp Bushland Reserve Conservation Upgrades. The following list details those most relevant.

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

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The exceptional employment performance in Trigg places it among Australia's strongest labour markets

Trigg has an educated workforce with professional services well represented. Its unemployment rate was 1.0% in the past year, with an estimated growth of 4.0%. As of September 2025, 1,812 residents were employed, with a 3.0% lower unemployment rate than Greater Perth's 4.0%.

Workforce participation was at 71.6%, similar to Greater Perth. Around 15.9% of residents worked from home, potentially influenced by Covid-19 lockdowns. Key industries included health care & social assistance, professional & technical services, and education & training. The area had a strong specialization in professional & technical services with an employment share 1.6 times the regional level, but transport, postal & warehousing had limited presence at 1.6% compared to 4.7% regionally.

Employment opportunities locally appeared limited based on Census data comparisons of working population and resident population. Between September 2024 and September 2025, employment increased by 4.0%, labour force grew by 3.5%, reducing the unemployment rate by 0.5 percentage points. In Greater Perth, employment grew by 2.9%, labour force expanded by 3.0%, with a marginal rise in unemployment. Jobs and Skills Australia's national employment forecasts from May-25 project national employment growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Trigg's employment mix suggests local employment should increase by 7.0% over five years and 14.2% over ten years, though this is a simple extrapolation for illustrative purposes and does not account for localized population projections.

The economic profile demonstrates exceptional strength, placing the area among the top 10% nationally based on comprehensive AreaSearch income analysis

AreaSearch's aggregation of ATO data for financial year 2023 shows Trigg suburb had a median taxpayer income of $70,223 and an average income of $111,312. These figures place Trigg in the top percentile nationally, compared to Greater Perth's median of $60,748 and average of $80,248. Considering Wage Price Index growth of 9.62% since financial year 2023, estimated incomes for September 2025 would be approximately $76,978 (median) and $122,020 (average). Census data indicates Trigg's household, family, and personal incomes rank highly, between the 86th and 94th percentiles nationally. The earnings profile shows that 35.9% of residents (1,129 people) fall into the $4000+ bracket, unlike surrounding regions where 32.0% earn within the $1,500 - 2,999 range. A substantial proportion of high earners (47.5%) indicates strong economic capacity in Trigg. After housing costs, residents retain 88.2% of income, reflecting strong purchasing power and the area's SEIFA income ranking places it in the 10th decile.

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

The dwelling structure in Trigg, as per the latest Census, consisted of 86.8% houses and 13.2% other dwellings (semi-detached, apartments, 'other' dwellings). This contrasted with Perth metro's figures of 77.8% houses and 22.1% other dwellings. Home ownership in Trigg stood at 49.0%, with mortgaged dwellings at 39.3% and rented ones at 11.6%. The median monthly mortgage repayment was $3,000, higher than Perth metro's average of $1,907. The median weekly rent in Trigg was $485, compared to Perth metro's $350. Nationally, Trigg's mortgage repayments were significantly higher than the Australian average of $1,863, and rents were substantially above the national figure of $375.

Trigg features high concentrations of family households, with a higher-than-average median household size

Family households account for 78.0% of all households, including 41.9% couples with children, 29.7% couples without children, and 6.2% single parent families. Non-family households constitute the remaining 22.0%, with lone person households at 18.4% and group households comprising 3.5%. The median household size is 2.7 people, which is larger than the Greater Perth average of 2.6.

Trigg demonstrates exceptional educational outcomes, ranking among the top 5% of areas nationally based on AreaSearch's comprehensive analysis of qualification and performance metrics

Educational attainment in Trigg is significantly higher than broader benchmarks. As of 2021, 44.9% of residents aged 15 and above hold university qualifications, compared to 27.9% in Western Australia (WA) and 29.0% in the SA4 region. Bachelor degrees are the most common at 31.0%, followed by postgraduate qualifications at 9.4% and graduate diplomas at 4.5%. Trade and technical skills are also prominent, with 26.9% of residents holding vocational credentials – advanced diplomas at 11.5% and certificates at 15.4%.

Educational participation is high, with 30.4% of residents currently enrolled in formal education as of the latest available data. This includes 10.3% in primary education, 9.1% in secondary education, and 6.5% pursuing tertiary education.

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

Transport analysis shows 12 active public transport stops in Trigg, all serving buses. These stops are covered by two routes, offering a total of 356 weekly passenger trips. Transport accessibility is deemed good, with residents usually located 233 meters from the nearest stop. Most residents commute outward due to Trigg's residential nature. Cars remain the primary mode at 86%, while trains account for 7%. Vehicle ownership averages 1.8 per dwelling, surpassing regional averages.

According to the 2021 Census, 15.9% of residents work from home, potentially influenced by COVID-19 conditions. Service frequency averages 50 trips daily across all routes, equating to roughly 29 weekly trips per individual stop.

Trigg's residents boast exceedingly positive health performance metrics with very low prevalence of common health conditions across all age groups

Trigg's health outcomes show excellent results based on AreaSearch's assessment. Mortality rates and chronic condition prevalence are very low across all age groups. Private health cover is exceptionally high at approximately 71% of Trigg's total population of 2,245 people, compared to 59.0% in Greater Perth and the national average of 55.7%.

The most prevalent medical conditions are arthritis (6.8%) and asthma (5.8%). 75.2% of residents report being completely clear of medical ailments, compared to 71.9% across Greater Perth. Working-age residents have low chronic condition prevalence. Trigg has a higher proportion of seniors aged 65 and over at 22.4% (704 people), compared to 16.3% in Greater Perth. Health outcomes among seniors are strong, with national rankings broadly in line with the general population.

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

Trigg's cultural diversity was found to be below average, with 77.3% of its population born in Australia, 92.0% being citizens, and 93.2% speaking English only at home. Christianity is the predominant religion in Trigg, comprising 51.8% of people. However, Judaism is overrepresented, making up 0.2% of Trigg's population compared to 0.3% across Greater Perth.

The top three ancestry groups are English (29.7%), Australian (27.1%), and Irish (8.7%). Notably, French (0.9%) and South African (1.0%) ethnicities are also overrepresented in Trigg compared to regional averages.

Trigg hosts a notably older demographic compared to the national average

The median age in Trigg is 43 years, considerably higher than Greater Perth's average of 37 years and substantially exceeding the national average of 38 years. The age profile shows that those aged 75-84 years are particularly prominent, making up 8.6% of the population, while those aged 25-34 years comprise only 6.5%. Since 2021, the percentage of the population aged 75-84 has grown from 6.7% to 8.6%, and the 85+ cohort has increased from 2.6% to 3.7%. Conversely, the percentage of those aged 65-74 years has declined from 11.5% to 10.1%, and the 25-34 age group has dropped from 7.6% to 6.5%. By 2041, demographic projections reveal significant shifts in Trigg's age structure. The 85+ age cohort is projected to grow exceptionally, expanding by 184 people (159%) from 116 to 301. Notably, the combined 65+ age groups will account for 58% of total population growth, reflecting Trigg's aging demographic profile. Conversely, the 0-4 and 35-44 age cohorts are expected to experience population declines.