O Halloran Hill (SA)

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Based on analysis of ABS population updates for the broader area, and new addresses validated by Districts since the Census O'Halloran Hill's population is estimated at around 2,807 as of May 2026. This reflects an increase of 85 people (3.1%) since the 2021 Census, which reported a population of 2,722 people. The change is inferred from the resident population of 2,807, estimated by Districts following examination of the latest ERP data release by the ABS (June 2025) and an additional 7 validated new addresses since the Census date. This level of population equates to a density ratio of 359 persons per square kilometer, providing significant space per person and potential room for further development. Population growth for the area was primarily driven by natural growth that contributed approximately 53.0% of overall population gains during recent periods.

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O'Halloran Hill features a skilled workforce, with essential services sectors well represented, an unemployment rate of just 2.3%, and 5.4% in estimated employment growth over the past year, based on Districts aggregation of statistical area data. As of March 2026, 1,622 residents are in work while the unemployment rate is 1.5% below Greater Adelaide's rate of 3.8%, and workforce participation is fairly standard (71.3% compared to Greater Adelaide's 66.6%). Based on Census responses, a low 10.7% of residents were found to work from home, though Covid-19 lockdown impacts should be considered.

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Districts' latest postcode level ATO data for financial year 2023 reveals that income in the suburb of O'Halloran Hill is below the national average, with the median assessed at $54,181 while the average income stands at $62,571. This contrasts to Greater Adelaide's figures of a median income of $54,808 and an average income of $66,852. Based on Wage Price Index growth of 10.17% since financial year 2023, current estimates would be approximately $59,691 (median) and $68,934 (average) as of March 2026. Census data reveals household, family and personal incomes all rank modestly in O'Halloran Hill, between the 38th and 48th percentiles. Income brackets indicate 37.4% of the population (1,049 individuals) fall within the $1,500 - 2,999 income range, aligning with the metropolitan region where this cohort likewise represents . After housing, of income remains for other expenses and the area's SEIFA income ranking places it in the th decile.

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Dwelling structure within O'Halloran Hill, as evaluated at the latest Census, comprised 91.8% houses and 8.2% other dwellings (semi-detached, apartments, 'other' dwellings), in comparison to Adelaide metro's 75.2% houses and 24.9% other dwellings. Meanwhile, the level of home ownership within O'Halloran Hill was in line with that of Adelaide metro, at 33.3%, with the remainder of dwellings either mortgaged (48.5%) or rented (18.2%). The median monthly mortgage repayment in the area was below the Adelaide metro average at $1,500, while the median weekly rent figure was recorded at $350, compared to Adelaide metro's $1,562 and $320. Nationally, O'Halloran Hill's mortgage repayments are significantly lower than the Australian average of $1,863, while rents are less than the national figure of $375.

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Family households dominate at 74.1% of all households, comprising 31.5% couples with children, 28.9% couples without children, and 13.0% single parent families. Non-family households make up the remaining 25.9%, with lone person households at 23.2% and group households comprising 2.5% of the total. The median household size of 2.5 people matches the Greater Adelaide average.

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Educational qualifications in O'Halloran Hill trail regional benchmarks, with 23.3% of residents aged 15+ holding university degrees compared to 30.4% in Australia. This gap highlights potential for educational development and skills enhancement. Bachelor degrees lead at 16.7%, followed by postgraduate qualifications (4.1%) and graduate diplomas (2.5%). Trade and technical skills feature prominently, with 40.0% of residents aged 15+ holding vocational credentials – advanced diplomas (11.4%) and certificates (28.6%).

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Public transport analysis reveals 31 active transport stops operating within O'Halloran Hill comprising a mix of buses. These stops are serviced by 15 individual routes, collectively providing 896 weekly passenger trips. Transport accessibility is rated as excellent, with residents typically located 158 meters from the nearest transport stop. As a primarily residential area, most residents commute outward - car remains the dominant mode at 90%. Vehicle ownership averages 1.6 per dwelling, above the regional average. A relatively low 10.7% of residents work from home (2021 Census; may reflect COVID-19 conditions).

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O'Halloran Hill faces significant health challenges, based on Districts' assessment of mortality rates and chronic condition prevalence with common health conditions somewhat prevalent across both JavaScript younger and older age cohorts , and the rate of private health cover found to be relatively low at approximately 52% of the total population (~1,452 people).

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O'Halloran Hill was found to be roughly in line with the wider region's average in terms of cultural diversity, with 79.4% of its population born in Australia, 92.0% being citizens, and 91.0% speaking English only at home. The main religion in O'Halloran Hill was found to be Christianity, which makes up 36.7% of people in O'Halloran Hill. However, the most apparent overrepresentation was in Other, which comprises 1.0% of the population, compared to 1.8% across Greater Adelaide.

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The 40-year median age in O'Halloran Hill is similar to Greater Adelaide's average of 39 similarly somewhat older than Australia's 38 years. The 75 - 84 age group shows strong representation at 9.3% compared to Greater Adelaide, whereas the 55 - 64 cohort is less prevalent at 9.7%. Post-2021 Census data shows the 75 to 84 age group has grown from 7.0% to 9.3% of the population, while the 15 to 24 cohort increased from 9.9% to 11.1%. Conversely, the 55 to 64 cohort has declined from 11.6% to 9.7%. Population forecasts for indicate substantial demographic changes for O'Halloran Hill. Leading the demographic shift, the to group will grow by ( people), reaching from . Notably, the combined + age groups will account for of total population growth, reflecting the area's aging demographic profile. In contrast, the to and to cohorts are expected to experience population declines.

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O'Halloran Hill currently has an estimated 154 children under 5 years old, comprising approximately 94 children aged 0-2 and 62 children aged 3-4. This cohort grew by an estimated 1% since the previous census. though population forecasts indicate future decline, with an anticipated decrease of 3% by 2041 (to approximately 150 children). Meanwhile the 5-12 cohort currently amounts to 245. While growth has been positive birth rates observed in the area have been moderate, with approximately 10.5 births per 1,000 residents recorded over the latest two-year period analysed which ranks the area within the middle tier nationally. This rate has slowed down slightly in recent years however.