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This analysis uses Suburbs and Localities (SAL) boundaries, which can materially differ from Statistical Areas (SA2) even when sharing the same name.
SAL boundaries are defined by Australia Post and the Australian Bureau of Statistics to represent commonly-known suburb names used in postal addresses.
Statistical Areas (SA2) are designed for census data collection and may combine multiple suburbs or use different geographic boundaries. For comprehensive analysis, consider reviewing both boundary types if available.
est. as @ -- *
2021 Census | -- people
Sales Activity
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Sales Detail
Population
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 May 2026, the estimated population of the suburb of O'Halloran Hill is around 2,807, reflecting an increase of 85 people since the 2021 Census. This growth represents a 3.1% rise from the previous population count of 2,722. AreaSearch's analysis, based on the latest ERP data release by the ABS (June 2025) and additional validated new addresses since the Census date, indicates this increase. The current density ratio is 359 persons per square kilometer. Natural growth contributed approximately 53.0% of overall population gains during recent periods.
For projections, AreaSearch uses ABS/Geoscience Australia data released in 2024 with a base year of 2022 for SA2 areas. For other areas and years post-2032, the SA State Government's Regional/LGA projections are adopted with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. Based on aggregated SA2-level projections, the suburb is expected to increase by 147 persons to 2041, reflecting an increase of 5.2% in total over the 16 years.
Frequently Asked Questions - Population
Development
AreaSearch analysis of residential development drivers sees O'Halloran Hill recording a relatively average level of approval activity when compared to local markets analysed countrywide
AreaSearch analysis of ABS building approval numbers in O'Halloran Hill shows approximately 7 dwellings receiving development approval annually. Between FY-21 and FY-25, around 36 homes were approved, with an additional 4 approved in FY-26. Each dwelling built attracted an average of 3.9 people over the past five financial years.
This has led to significant demand exceeding new supply, potentially driving price growth and increased buyer competition. The average construction value of new homes is $411,000, indicating a focus on the premium market segment with higher-end properties.
In FY-26, there have been $695,000 in commercial approvals, reflecting the area's residential nature. All new constructions have been standalone homes, maintaining O'Halloran Hill's traditional low density character and appealing to those seeking space. The area has around 296 people per approval. Future projections estimate O'Halloran Hill will add 147 residents by 2041, with current development rates comfortably meeting demand and potentially supporting growth beyond current population projections.
Frequently Asked Questions - Development
Development applications around O'Halloran Hill
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| Lodged | Address | Description | Type | Distance | Status |
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SOURCE: Planning portals and council registers, compiled by AreaSearch. Distance & bearing measured from the suburb midpoint.
Infrastructure
O'Halloran Hill has limited levels of nearby infrastructure activity, ranking in the 19thth percentile nationally
Six projects identified by AreaSearch are expected to impact the area significantly. These include the 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 details those anticipated to have the most relevance.
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INFRASTRUCTURE SEARCH
Denotes AI-based impression for illustrative purposes only, not to be taken as definitive under any circumstances. Please follow links and conduct other investigations from the project's source for actual imagery. Developers and project owners wishing us to use original imagery please Contact Us and we will do so.
Frequently Asked Questions - Infrastructure
Flinders Medical Centre Southern Redevelopment Stage 1 (Acute Services Building)
Stage 1 of the Southern Adelaide Local Health Network redevelopment, anchored by a new seven-storey Acute Services Building at the front of Flinders Medical Centre. The tower delivers 17,000 square metres of new built area plus 3,000 square metres of refurbishment, adding 98 clinical spaces. It will house two 32-bed adult inpatient units, an 18-bay Medical Day Unit, a 16-bed Intensive Care Unit with a dedicated CT scanner suite, four operating theatres with a 14-bay recovery area, a Day of Surgery Admissions area, a new Podiatry department, and a dedicated floor for the FMC Eye Surgery Clinic which integrates the network's ophthalmology services into a single facility (a first for South Australia's public health system). The new building will form the hospital's main entrance with a large lobby, retail outlet and undercover drop-off zone. The wider Stage 1 program also includes a 12-bed Psychiatric Intensive Care Unit at Margaret Tobin Centre (opening March 2026), 48 new beds at Noarlunga Hospital (opened November 2025), 32 beds across two wards at the Repat Health Precinct (opened 2024), and supporting upgrades to mortuary (completed October 2025), kitchen, sterilisation services and electrical infrastructure. More than 20 million dollars of new major medical equipment will be installed including advanced imaging, automated pharmacy dispensing cabinets and a new CT scanner. Designed by ARM Architecture with Silver Thomas Hanley, with Built Environs as Managing Contractor and Aurecon providing structural and civil engineering. The Acute Services Building is expected to open in early 2028.
Zero Cost Energy Future - Happy Valley Reservoir Solar Project
World's largest fully moveable solar array featuring 33,750 5B Maverick pre-fabricated solar panels with 12.8MW capacity at Happy Valley Reservoir Reserve. Generates 17 gigawatt hours of renewable energy annually to power the water treatment plant serving over 40% of Adelaide's drinking water. Part of SA Water's $300 million Zero Cost Energy Future initiative. The innovative relocatable system uses ballasted design requiring minimal ground penetration, allowing the array to be moved if needed for maintenance or site works.
Happy Valley Reservoir Reserve Access Project
First-time public opening of the 120-year-old Happy Valley Reservoir Reserve featuring 20 kilometres of walking, cycling and mountain biking trails, 110 hectares of water for kayaking and fishing, two kayak launch areas (one with disability access), picnic facilities with BBQs and shelters, car parking, and visitor amenities. The reserve connects to Glenthorne National Park creating over 1,500 hectares of accessible outdoor recreation space. Opened December 11, 2021 after extensive water treatment upgrades to enable safe public access while maintaining drinking water quality for over 40% of metropolitan Adelaide.
Adelaide Public Transport Capacity and Access
State-led program work to increase public transport capacity and access to, through and within central Adelaide. Current work is focused on the City Access Strategy (20-year movement plan for the CBD and North Adelaide) and the State Transport Strategy program, which together will shape options such as bus priority, interchange upgrades, tram and rail enhancements, and better first/last mile access.
Seaview High School Upgrade
Facility upgrade delivering a new 2 storey multi purpose Creative Design building, a new single storey Performing Arts facility with associated performance spaces, and refurbishment of an existing building to provide contemporary STEM learning areas. Project value reported at $17.65 million. Architect: Flightpath Architects. Builder: Badge Constructions. Construction completed, with completion reported by industry sources at end of 2022.
Flagstaff Road Upgrade
Road infrastructure improvements along Flagstaff Road including widening, new intersections, improved drainage, enhanced safety features, and upgraded pedestrian and cycling infrastructure to support growing residential development in the area.
Flagstaff Pines Residential Development
A 37 hectare residential community at Flagstaff Hill delivered by Adelaide Development Company, with open space, wildlife corridors, landscaped reserves, watercourses and walking trails. Around 300 home sites were created with a focus on preserving the natural setting. Estate fully delivered and occupied.
Happy Valley Drive Intersections Planning Study
Planning study to develop potential upgrade options for the intersections at Chandlers Hill Road and Windebanks Road on Happy Valley Drive to improve safety and address traffic delays. Community consultation was completed in March-April 2024. The Department for Infrastructure and Transport is coordinating with the City of Onkaparinga. There is currently no funding allocated to deliver the proposed upgrades. Future funding decisions will be considered based on community feedback and further technical investigations. Happy Valley Drive north of Chandlers Hill Road and Chandlers Hill Road are under care and control of DIT, while Happy Valley Drive south of Chandlers Hill Road and Windebanks Road are under care and control of the City of Onkaparinga.
Employment
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 in the area was 2.2% as of December 2025. This is lower than Greater Adelaide's rate of 3.8%.
Employment growth over the past year was estimated at 4.8%, based on AreaSearch aggregation of statistical area data. As of December 2025, 1,606 residents were in work and workforce participation was 70.5%, compared to Greater Adelaide's 66.0%. According to Census responses, 10.7% of residents worked from home. The dominant employment sectors among residents include health care & social assistance, construction, and retail trade.
Construction is particularly notable with employment levels at 1.3 times the regional average. Manufacturing, however, is under-represented with only 5.0% of O'Halloran Hill's workforce compared to Greater Adelaide's 7.0%. Many residents commute elsewhere for work based on Census working population data. During the year to December 2025, employment levels increased by 4.8%, labour force grew by 4.6%, and unemployment fell by 0.2 percentage points in O'Halloran Hill. In contrast, Greater Adelaide saw employment rise by 4.2%, labour force grow by 3.9%, and unemployment fall by 0.3 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. 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, based on a simple weighting extrapolation for illustrative purposes.
Frequently Asked Questions - Employment
Income
Income levels sit below national averages according to AreaSearch assessment
O'Halloran Hill suburb has a median taxpayer income of $54,181 and an average of $62,571 based on the latest postcode level ATO data aggregated by AreaSearch for financial year 2023. This is lower than the national average, with Greater Adelaide's median income being $54,808 and average income being $66,852. Using a Wage Price Index growth of 10.17% since financial year 2023, estimated incomes for March 2026 would be approximately $59,691 (median) and $68,934 (average). Census 2021 income data shows household, family, and personal incomes in O'Halloran Hill rank modestly, between the 38th and 48th percentiles. The largest earnings segment comprises 37.4% earning $1,500 - $2,999 weekly (1,049 residents), similar to regional levels at 31.8%. After housing expenses, 85.1% of income remains for other expenses. The area's SEIFA income ranking places it in the fifth decile.
Frequently Asked Questions - Income
Housing
O'Halloran Hill is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership
Dwelling structure in O'Halloran Hill, as evaluated at the latest Census, consisted of 91.8% houses and 8.2% other dwellings (semi-detached, apartments, 'other' dwellings). This compares to Adelaide metro's 75.2% houses and 24.9% other dwellings. Home ownership in O'Halloran Hill was at 33.3%, with the rest being mortgaged (48.5%) or rented (18.2%). The median monthly mortgage repayment in the area was $1,500, below Adelaide metro's average of $1,562. Median weekly rent was recorded at $350, compared to Adelaide metro's $320. Nationally, O'Halloran Hill's mortgage repayments were significantly lower than the Australian average of $1,863, while rents were less than the national figure of $375.
Frequently Asked Questions - Housing
Household Composition
O'Halloran Hill has a typical household mix, with a fairly typical median household size
Family households comprise 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 make up the remaining 25.9%, with lone person households at 23.2% and group households comprising 2.5%. The median household size is 2.5 people, matching the Greater Adelaide average.
Frequently Asked Questions - Households
Local Schools & Education
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; 23.3% of residents aged 15+ hold university degrees compared to the national average of 30.4%. 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+ 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.
Educational participation is notably 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.
Frequently Asked Questions - Education
Schools Detail
Nearby Services & Amenities
Transport
Transport servicing is good compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility
O'Halloran Hill has 31 active public transport stops, all of which are bus stops. These stops are served by 15 different routes that together facilitate 896 weekly passenger trips. The area's transport accessibility is rated as excellent, with residents on average located 158 meters from the nearest stop. Most residents commute outward due to its residential nature. Cars remain the primary mode of transport at 90%. On average, there are 1.6 vehicles per dwelling, higher than the regional average.
According to the 2021 Census, only 10.7% of residents work from home, which may be influenced by COVID-19 conditions. The service frequency averages 128 trips per day across all routes, equating to approximately 28 weekly trips per individual stop.
Frequently Asked Questions - Transport
Transport Stops Detail
Health
Health performance in O'Halloran Hill is lower than average with common health conditions somewhat prevalent across both younger and older age cohorts
O'Halloran Hill faces significant health challenges based on AreaSearch's assessment.
Mortality rates and chronic condition prevalence are high, with common health conditions prevalent across both younger and older age cohorts. Private health cover is relatively low at approximately 52% of the total population (~1,452 people). The most common medical conditions are asthma and arthritis, impacting 9.5% and 9.4% of residents respectively. 63.7% of residents declare themselves completely clear of medical ailments compared to 67.9% across Greater Adelaide. Working-age residents show above average prevalence of chronic health conditions. The area has 20.9% of residents aged 65 and over (586 people), which is higher than the 19.2% in Greater Adelaide. Health outcomes among seniors present some challenges, with national rankings broadly in line with the general population.
Frequently Asked Questions - Health
Cultural Diversity
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 was found to be roughly aligned with the broader area's average in cultural diversity, with 79.4% born in Australia, 92.0% being citizens, and 91.0% speaking English only at home. Christianity was the predominant religion in O'Halloran Hill, comprising 36.7% of its population. Notably, the category 'Other' made up 1.0%, which is lower than Greater Adelaide's average of 1.8%.
In terms of ancestry, the top three groups were English at 35.7%, Australian at 23.0%, and Scottish at 8.2%. Some ethnic groups showed significant differences: Welsh was overrepresented at 0.9% compared to 0.6% regionally, Polish at 1.1% versus 1.0%, and German at 6.2% compared to 5.1%.
Frequently Asked Questions - Diversity
Age
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 average of 38 years. The 75-84 age group represents 9.3% of the population in O'Halloran Hill, higher than Greater Adelaide's percentage. Conversely, the 55-64 cohort makes up 9.7%, which is less prevalent compared to Greater Adelaide. According to post-2021 Census data, the 75 to 84 age group has increased from 7.0% to 9.3%, while the 15 to 24 cohort has risen from 9.9% to 11.1%. However, 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 projected to grow by 33%, adding 86 people, reaching a total of 348 from 261. Notably, the combined 65+ age groups are expected to account for 66% of the total population growth, reflecting the area's aging demographic profile. In contrast, the 15 to 24 and 55 to 64 cohorts are anticipated to experience population declines.