Trevallyn (Tas.)

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Based on data from ABS demographic updates for the wider region, alongside newly confirmed locations verified by Districts post-Census, the suburb of Trevallyn is home to roughly 4,878 people as of May 2026. This indicates a rise of 52 people (1.1%) from the 2021 Census, which registered a count of 4,826 individuals. The calculation relies on a resident population of 4,874, estimated by Districts using the most recent ERP statistics from the ABS (June 2025) plus an extra 21 validated new addresses identified after the Census date. This size of population results in a density of 500 persons per square kilometer, which offers substantial space per occupant and opportunities for future building. The 1.1% post-census growth rate for the suburb of Trevallyn is within 1.5 percentage points of the wider SA3 area (2.6%), showing stable growth indicators. Local population gains were mostly supported by overseas arrivals, which accounted for approximately 52.0% of the overall increases in recent times.

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The suburb of Trevallyn possesses a highly qualified workforce, with strong representation in vital services, and an unemployment rate of only 2.2%, based on Districts compilation of regional statistical data. As of March 2026, there are 2,656 working residents, with the local unemployment rate sitting 1.8% below the Regional Tas. level of 3.9%, and labor force participation is exceptionally high at 66.8% compared to 58.8% for Regional Tas. Census records show a modest 7.8% of residents worked from their homes, though the influence of Covid-19 pandemic restrictions should be kept in mind.

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The latest postcode-based ATO details from Districts for financial year 2023 show that taxpayers in the suburb of Trevallyn earn more than the national median, which is valued at $58,704, with the average taxpayer earning $73,830. This is higher than the Regional Tas. figures, where the median income is $49,689 and the average is $59,358. Applying Wage Price Index growth of 10.95% since financial year 2023, updated figures would be approximately $65,132 for the median and $81,914 for the average as of March 2026. The 2021 Census places individual income at the 58th percentile ($845 weekly), and household income at the 42nd percentile. Earnings brackets show that the $1,500 - 2,999 range is the most common, accounting for 32.6% of residents ( people), which aligns with the regional trend where fall into this bracket. Housing costs are manageable, with of income retained, though disposable income is below the national midpoint at the th percentile, and the local SEIFA income score falls in the th decile.

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Residential architecture in the suburb of Trevallyn, as measured in the most recent Census, consisted of 91.5% standalone houses and 8.4% other housing types (townhouses, flats, and alternative options), compared to 89.9% houses and 10.1% other options across Regional Tas. The home ownership rate in the suburb of Trevallyn was slightly lower than the Regional Tas. average, standing at 37.3%, with the remaining properties being purchased with a mortgage (36.8%) or occupied by tenants (25.9%). The median monthly home loan payment was higher than the Regional Tas. average at $1,387, while the median weekly rental cost was $300, compared to Regional Tas. figures of $1,274 and $250. Nationally, mortgage repayments in the suburb of Trevallyn are much lower than the Australian average of $1,863, while weekly rents are well below the national figure of $375.

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Family units represent the majority of local households at 68.5%, consisting of 29.4% couples with children, 28.1% couples without children, and 10.0% single parent families. Non-family households account for the remaining 31.5%, with single-person households at 27.9% and group households representing 3.6% of the total. The median household size of 2.4 people is slightly above the Regional Tas. average of 2.3.

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The level of education in the suburb of Trevallyn is higher than the broader region, with 35.2% of residents aged 15+ holding a university degree, compared to 19.3% in Rest of Tas. and 21.7% in the SA4 region. This education gap supports local readiness for professional and technical roles. Bachelor degrees are the most common qualification at 22.0%, followed by postgraduate degrees (9.1%) and graduate diplomas (4.1%). Vocational training is also common, with 33.1% of residents aged 15+ holding a trade qualification, consisting of advanced diplomas (11.7%) and certificates (21.4%).

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Public transport studies show 45 active transit stops in the suburb of Trevallyn, consisting of bus services. These stops are connected to 97 routes, which provide a combined total of 8,549 weekly passenger trips. Transport links are excellent, with residents living an average of 198 meters from the nearest stop. As this is primarily a residential area, most working residents commute to other locations, with private cars remaining the primary option at 92% and walking accounting for 4%. Residents own an average of 1.5 vehicles per household. A low 7.8% of residents worked from home, according to the 2021 Census, which may have been influenced by pandemic measures.

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Health records show generally favorable patterns for those living in the suburb of Trevallyn, with Districts analysis of death rates and illnesses indicating results that match national averages, showing typical rates of common medical conditions across young and old groups, while private health insurance coverage is high, representing approximately 56% of the population (~2,752 people). This compares to 49.1% of people across Regional Tas.

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The suburb of Trevallyn has a lower level of cultural diversity than average, with 83.3% of residents born in Australia, 90.7% holding citizenship, and 92.0% using only English at home. Christianity is the primary religion, followed by 38.0% of the population. The most visible demographic variance is in Hinduism, which represents 1.4% of local residents, compared to 1.1% across Regional Tas.

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The median age in the suburb of Trevallyn is 40 years, which is lower than the Regional Tas. average of 45 but slightly older than the Australian average of 38 years. Residents aged 45 - 54 are particularly common (14.5%), while the 65 - 74 age bracket is smaller (10.1%) than the regional average. Since 2021, the cohort aged 85 and over has increased from 1.6% to 2.7% of the population. Conversely, the 5 to 14 cohort has dropped from 13.6% to 12.3%. Projections for 2041 indicate demographic changes, with the 45 to 54 cohort expected to grow by 16%, adding 109 people to reach while the to and to groups are projected to decrease in size.

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Trevallyn currently has an estimated 224 children under 5 years old, comprising approximately 134 children aged 0-2 and 90 children aged 3-4. This cohort declined by an estimated 1% since the previous census. while population forecasts indicate future decline, with an anticipated decrease of 7% by 2041 (to approximately 209 children). Meanwhile the 5-12 cohort currently amounts to 478. Birth rates in the area have averaged 9.9 per 1,000 residents over the latest two-year period, a moderate rate (within the middle tier nationally). This rate has slowed down slightly in recent years however.