O'Halloran Hill

An assessment of population growth drivers in O'Halloran Hill reveals an overall ranking slightly below national averages considering recent, and medium term trends

As of Feb 2026, the estimated population of the suburb of O'Halloran Hill is around 2,847. This reflects an increase of 125 people since the 2021 Census, which reported a population of 2,722. The change was inferred from AreaSearch's estimate of the resident population at 2,828 in June 2024, based on the latest ERP data release by the ABS, and an additional 7 validated new addresses since the Census date. This results in a density ratio of 364 persons per square kilometer. The suburb's growth rate of 4.6% since the census is within 2.8 percentage points of the SA4 region's growth rate of 7.4%. Natural growth contributed approximately 53.0% of overall population gains during recent periods.

AreaSearch adopts ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022. For areas not covered by this data and years post-2032, the SA State Government's Regional/LGA projections are adopted, based on 2021 data and adjusted using weighted aggregation methods from LGA to SA2 levels. According to aggregated SA2-level projections, the suburb is expected to increase by 157 persons to reach a total population of approximately 3,004 by 2041, reflecting an overall increase of 4.7% over the 17-year period.

Residential development activity is lower than average in O'Halloran Hill according to AreaSearch's national comparison of local real estate markets

AreaSearch analysis of ABS building approval numbers, allocated from statistical area data, indicates O'Halloran Hill has experienced approximately 8 dwellings receiving development approval annually. Around 41 homes were approved between financial years FY-21 and FY-25, with an additional 1 approved in FY-26. Each dwelling built over the past five financial years (FY-21 to FY-25) resulted in approximately 2.2 new residents per year on average.

This robust demand supports property values, with new homes being constructed at an average expected cost of $402,000, targeting the premium market segment. In FY-26, there have been $695,000 in commercial approvals, reflecting the area's residential nature.

All new construction has comprised standalone homes, maintaining O'Halloran Hill's traditional low density character with a focus on family homes. The area reflects a low density population, with around 256 people per approval. Future projections estimate O'Halloran Hill to add approximately 133 residents by 2041, based on the latest AreaSearch quarterly estimate. At current development rates, new housing supply should comfortably meet demand, providing good conditions for buyers and potentially supporting growth beyond current population projections.

O'Halloran Hill has limited levels of nearby infrastructure activity, ranking in the 12thth percentile nationally

AreaSearch has identified six projects that could impact the local area. Key projects include: Happy Valley Reservoir Reserve Access Project, Zero Cost Energy Future - Happy Valley Reservoir Solar Project, Happy Valley Drive Intersections Planning Study, and Southern Expressway Duplication. The following list details those likely to be most relevant.

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

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The labour market strength in O'Halloran Hill positions it well ahead of most Australian regions

O'Halloran Hill has a skilled workforce with essential services sectors well represented. The unemployment rate was 2.3% in the past year, with an estimated employment growth of 3.6%. As of September 2025, 1,593 residents were employed, with an unemployment rate of 1.6% below Greater Adelaide's rate of 3.9%.

Workforce participation was 69.7%, compared to Greater Adelaide's 66.4%. According to Census responses, 10.7% of residents worked from home. The dominant employment sectors were health care & social assistance, construction, and retail trade. Construction had particularly notable concentration, with employment levels at 1.3 times the regional average.

Manufacturing was under-represented, with only 5.0% of O'Halloran Hill's workforce compared to 7.0% in Greater Adelaide. Many residents commute elsewhere for work based on Census data. Between September 2024 and September 2025, employment levels increased by 3.6%, labour force grew by 3.5%, with unemployment remaining essentially unchanged. In contrast, Greater Adelaide saw employment rise by 3.0%, labour force grow by 2.9%, and unemployment fall by 0.1 percentage points. 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, with varying rates between industry sectors. Applying these projections to O'Halloran Hill's employment mix suggests local employment should increase by 6.7% over five years and 13.9% over ten years, though this is a simple weighting extrapolation for illustrative purposes and does not consider localised population projections.

Income levels sit below national averages according to AreaSearch assessment

The suburb of O'Halloran Hill has a median taxpayer income of $54,181 and an average income of $62,571 according to the latest postcode level ATO data aggregated by AreaSearch for financial year 2023. This is below the national average, with Greater Adelaide having a median income of $54,808 and an average income of $66,852. Based on Wage Price Index growth of 8.8% since financial year 2023, current estimates would be approximately $58,949 (median) and $68,077 (average) as of September 2025. Census 2021 income data shows household, family and personal incomes all rank modestly in O'Halloran Hill, between the 38th and 48th percentiles. The earnings profile indicates that the largest segment comprises 37.4% earning $1,500 - $2,999 weekly (1,064 residents), aligning with regional levels where this cohort likewise represents 31.8%. After housing, 85.1% of income remains for other expenses and the area's SEIFA income ranking places it in the 5th decile.

O'Halloran Hill is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership

In O'Halloran Hill, as per the latest Census evaluation, 91.8% of dwellings were houses, with the remaining 8.2% comprising semi-detached homes, apartments, and other dwelling types. This contrasts with Adelaide metro's figures of 75.2% houses and 24.9% other dwellings. Home ownership in O'Halloran Hill stood at 33.3%, mirroring the Adelaide metro average. Mortgaged dwellings accounted for 48.5%, while rented properties made up 18.2%. The median monthly mortgage repayment in the area was $1,500, lower than the Adelaide metro average of $1,562. The median weekly rent figure in O'Halloran Hill was $350, compared to Adelaide metro's $320. Nationally, O'Halloran Hill's monthly mortgage repayments were significantly below the Australian average of $1,863, and rents were less than the national figure of $375.

O'Halloran Hill has a typical household mix, with a fairly typical median household size

Family households account for 74.1% of all households, including 31.5% couples with children, 28.9% couples without children, and 13.0% single parent families. Non-family households constitute the remaining 25.9%, with lone person households at 23.2% and group households comprising 2.5% of the total. The median household size is 2.5 people, which aligns with the Greater Adelaide average.

The educational profile of O'Halloran Hill exceeds national averages, with above-average qualification levels and academic performance metrics

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

Educational participation is high, with 26.0% of residents currently enrolled in formal education. This includes 10.3% in primary education, 5.7% in secondary education, and 4.7% pursuing tertiary education.

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

Public transport analysis shows 31 active transport stops in O'Halloran Hill, consisting of buses. These stops are served by 15 individual routes, offering a total of 896 weekly passenger trips. Transport accessibility is rated excellent, with residents typically located 158 meters from the nearest stop. Most residents commute outward due to the area's residential nature. Cars remain the dominant mode at 90%, with an average vehicle ownership of 1.6 per dwelling, above the regional average. Only 10.7% of residents work from home (2021 Census).

Service frequency averages 128 trips per day across all routes, equating to approximately 28 weekly trips per stop.

Health outcomes in O'Halloran Hill are marginally below the national average with common health conditions somewhat prevalent across both younger and older age cohorts

O'Halloran Hill shows below-average health outcomes according to AreaSearch's assessment of mortality rates and chronic condition prevalence.

Common health conditions are prevalent across both younger and older age groups. Approximately 52% (~1,473 people) have private health cover, which is relatively low compared to the area's total population. The most common medical conditions are asthma (9.5%) and arthritis (9.4%). A majority of residents (63.7%) claim to be completely clear of medical ailments, lower than Greater Adelaide's 67.9%. Working-age residents have an above-average prevalence of chronic health conditions. The area has a higher proportion of seniors aged 65 and over at 21.1% (600 people) compared to Greater Adelaide's 19.3%. Health outcomes among seniors present some challenges, with national rankings generally in line with the general population.

In terms of cultural diversity, O'Halloran Hill records figures broadly comparable to the national average, as found in AreaSearch's assessment of a number of language and cultural background related metrics

O'Halloran Hill's population, born in Australia, was 79.4%, with 92.0% being citizens and 91.0% speaking English only at home. Christianity was the predominant religion, accounting for 36.7%. The 'Other' religious category comprised 1.0%, compared to 1.8% in Greater Adelaide.

In terms of ancestry, English was the highest at 35.7%, Australian was second at 23.0%, and Scottish third at 8.2%. Welsh (0.9%) and Polish (1.1%) were slightly overrepresented compared to regional averages of 0.6% and 1.0% respectively. German ancestry was notably higher at 6.2% versus the region's 5.1%.

O'Halloran Hill's population is slightly older than the national pattern

The median age in O'Halloran Hill is 40 years, similar to Greater Adelaide's average of 39 years, but somewhat older than Australia's median age of 38 years. The 75-84 age group represents 9.5% of the population in O'Halloran Hill, compared to Greater Adelaide, while the 55-64 cohort makes up 9.7%. According to post-2021 Census data, the 75 to 84 age group has increased from 7.0% to 9.5%, and the 15 to 24 cohort has risen from 9.9% to 11.1%. Conversely, the 55 to 64 cohort has decreased from 11.6% to 9.7%. Population forecasts for 2041 suggest significant demographic changes in O'Halloran Hill. The 75 to 84 age group is expected to grow by 35%, adding 93 people, reaching a total of 364 from the current 270. Notably, the combined 65+ age groups will account for 72% of the total population growth, reflecting the area's aging demographic profile. In contrast, the 15 to 24 and 55 to 64 cohorts are projected to experience population declines.