Collinswood (SA)

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Analysis of ABS demographic statistics and post-Census address verification by Districts suggests that Collinswood has a population of approximately 1,537 as of May 2026. This indicates a rise of 41 residents (2.7%) from the 1,496 citizens documented in the 2021 Census. This adjustment is calculated from a resident count of 1,537, determined by Districts using the June 2025 ERP release from the ABS alongside 10 validated new addresses established after the Census. The suburb of Collinswood has a population density of 2,955 persons per square kilometer, which ranks in the top quartile of all Australian locations analyzed by Districts. The primary driver of this demographic expansion was overseas migration, which accounted for roughly 72.0% of the overall population rise in recent times.

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A highly qualified labor force characterizes Collinswood, with strong representation in essential service sectors, a low unemployment rate of 2.1%, and an estimated job growth rate of 5.6% over the previous year, according to aggregated statistical area data from Districts. In March 2026, there were 986 employed residents, with the unemployment rate sitting 1.7% lower than the Greater Adelaide figure of 3.8%. The labor participation rate is high at 77.9%, compared to 66.6% across Greater Adelaide. According to Census records, a minor proportion of 10.6% of the workforce operated from home, though this period was influenced by COVID-19 containment measures.

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According to the latest ATO postcode statistics from the 2023 financial year, local incomes in Collinswood are exceptionally high compared to national standards, with a median of $59,589 and an average of $83,831. This is higher than the Greater Adelaide median of $54,808 and average of $66,852. Factoring in Wage Price Index growth of 10.17% since the 2023 financial year, current estimates as of March 2026 are approximately $65,649 for the median and $92,357 for the average. In the 2021 Census, individual earnings placed at the 79th percentile ($1,012 per week), while household earnings were at the 61st percentile. The most common weekly earning bracket is $1,500 - 2,999, containing 31.0% of the population ( people), mirroring the wider regional trend where of residents fall into this group. After housing costs, residents retain of their income for other spending, and the suburb ranks in the th decile on the SEIFA income index.

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The mix of residences in Collinswood at the time of the latest Census consisted of 46.6% standalone houses and 53.4% alternative options such as townhouses, units, and other dwellings, differing from the Adelaide metro breakdown of 75.2% houses and 24.9% other properties. Home ownership in the area was lower than the Adelaide metropolitan average at 25.4%, with the remaining dwellings split between mortgaged properties (30.0%) and rental homes (44.6%). Monthly mortgage costs were high compared to the Adelaide metro average, sitting at a median of $2,077, while weekly rent was recorded at a median of $300, compared to regional medians of $1,562 and $320 respectively. On a national scale, mortgage payments in Collinswood are higher than the Australian median of $1,863, while weekly rents are lower than the national median of $375.

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Families make up the majority of households at 61.7%, consisting of couples with children at 30.7%, couples without children at 22.6%, and single parents at 8.2%. The remaining 38.3% are non-family households, which include single person households at 33.4% and group living situations at 4.6%. The median household size is 2.4 residents, slightly below the Greater Adelaide average of 2.5.

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The level of education in Collinswood is high compared to broader averages, with 48.3% of residents aged 15+ holding a university degree, compared to 25.7% throughout SA and 28.9% in Greater Adelaide. This strong qualification profile positions the local workforce well for professional opportunities. Bachelor degrees are the most common at 29.9%, followed by postgraduate degrees at 13.4% and graduate diplomas at 5.0%. Vocational courses represent 23.4% of qualifications for residents aged 15+, consisting of advanced diplomas at 9.5% and certificates at 13.9%.

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Public transit options in Collinswood include 6 active stops served by buses. These stops accommodate 16 different routes, supporting a total of 1,425 weekly passenger trips. Transport links are rated as good, with residents living an average of 232 meters from their nearest transit stop. Given the residential nature of the suburb, most workers travel elsewhere for employment, with private cars remaining the primary travel mode at 83%, followed by bus transit at 12% and bicycle travel at 3%. Households own an average of 1.2 vehicles, which is lower than the metropolitan average. A relatively low proportion of 10.6% of residents worked from home, according to the 2021 Census, which was influenced by COVID-19 circumstances.

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Based on Districts assessments of mortality and chronic illness rates, health profiles are strong in Collinswood, showing low rates of common medical conditions across all age brackets. Private health insurance coverage is high, with approximately 60% of residents (923 people) holding policies, compared to 52.7% across Greater Adelaide.

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Collinswood shows greater cultural diversity than most comparable property markets, with 32.8% of residents born outside Australia and 31.3% speaking a non-English language at home. Christianity is the most common religious affiliation, representing 41.9% of the local population. However, Hinduism shows the most significant variation from regional norms, accounting for 9.4% of residents compared to the Greater Adelaide average of 2.8%.

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The median age of 36 years in Collinswood is slightly below the Greater Adelaide average of 39 and the national median of 38. Compared to the wider metropolitan area, Collinswood has a higher proportion of young adults aged 25 - 34 (17.0%) but fewer seniors aged 75 - 84 (5.0%). Since the 2021 Census, the 65 to 74 demographic has increased from 7.6% to 10.0% of the population, and the 75 to 84 bracket has risen from 3.5% to 5.0%. In contrast, the 55 to 64 group decreased from 11.7% to 10.7%. By 2041, the age structure is projected to shift. The to age bracket is expected to increase by ( people), growing from to residents. This aging trend is marked, with residents aged + accounting for of the projected growth. Conversely, population drops are expected in the to and to age groups.

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Collinswood currently has an estimated 69 children under 5 years old, comprising approximately 45 children aged 0-2 and 29 children aged 3-4. This cohort declined by an estimated 13% since the previous census. while population forecasts indicate future decline, with an anticipated decrease of 9% by 2041 (to approximately 63 children). Meanwhile the 5-12 cohort currently amounts to 136. Birth rates in the area have averaged 8.7 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.