Flagstaff Hill

Flagstaff Hill is positioned among the lower quartile of areas assessed nationally for population growth based on AreaSearch's assessment of recent, and medium term trends

The population of Flagstaff Hill is estimated at around 10,523 as of February 2026. This reflects an increase of 339 people since the 2021 Census, which reported a population of 10,184. The change was inferred from AreaSearch's estimation of the resident population at 10,480 following examination of ABS data released in June 2024, and an additional 15 validated new addresses since the Census date. This results in a density ratio of 1,338 persons per square kilometer, above the national average according to AreaSearch assessments. Overseas migration contributed approximately 71.0% 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 each SA2 area. For areas not covered and years post-2032, South Australian Government's Regional/LGA projections by age category, released in 2023 using 2021 data, are adopted with adjustments made employing weighted aggregation methods from LGA to SA2 levels. Future population dynamics anticipate an increase just below the national median, with Flagstaff Hill expected to expand by 1,208 persons to reach a total of around 11,731 by 2041, reflecting a gain of approximately 10.8% over the 17-year period.

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

Flagstaff Hill has averaged approximately 13 new dwelling approvals annually. Between financial years FY-21 and FY-25, about 67 homes were approved, with another 13 approved in FY-26 to date.

This results in an average of around 5.3 people moving to the area per year for each dwelling built over these five financial years. The demand significantly outpaces supply, which typically influences prices upwards and intensifies competition among buyers. The average construction value of new homes is approximately $391,000, indicating that developers target the premium market segment with higher-end properties. Comparatively, Flagstaff Hill has lower building activity than Greater Adelaide, recording 73.0% below the regional average per person. This constraint in new construction often reinforces demand and pricing for existing dwellings.

The area's population density is approximately 1304 people per dwelling approval, reflecting an established market. According to AreaSearch quarterly estimates, Flagstaff Hill is projected to gain around 1,137 residents by 2041. Given current development rates, housing supply may struggle to keep pace with population growth, potentially heightening buyer competition and supporting price increases. Recent developments have been exclusively detached dwellings, maintaining the area's suburban identity and catering to buyers seeking spacious family homes.

Flagstaff Hill has emerging levels of nearby infrastructure activity, ranking in the 24thth percentile nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch identified nine projects expected to affect the region. Key initiatives include Living Choice Flagstaff Hill, Flagstaff Hill Reserve Revegetation Project, Urban Creek Resilience and Recovery Project - Sauerbier and Homestead Creeks, and Flinders Medical Centre Southern Redevelopment Stage 1 (Acute Services Building). The following list details those projects likely to be most relevant.

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

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The exceptional employment performance in Flagstaff Hill places it among Australia's strongest labour markets

Flagstaff Hill has an educated workforce with prominent representation in essential services sectors. Its unemployment rate is 1.5%, with an estimated employment growth of 3.4% over the past year (AreaSearch). As of September 2025, 6,019 residents are employed, while the unemployment rate is 2.5% lower than Greater Adelaide's rate of 3.9%.

Workforce participation stands at 70.7%, close to Greater Adelaide's 66.4%. According to Census data, 12.5% of residents work from home, but Covid-19 impacts are notable. Key industries include health care & social assistance, education & training, and retail trade. Education & training shows high concentration with employment levels at 1.3 times the regional average.

Conversely, manufacturing has lower representation at 5.7%. The area offers limited local employment opportunities based on Census working population vs resident population comparison. Between September 2024 and September 2025, employment levels increased by 3.4% and labour force grew by 3.3%, with unemployment remaining stable (AreaSearch). Greater Adelaide recorded employment growth of 3.0% and labour force growth of 2.9%, with a slight fall in unemployment (0.1 percentage points). Jobs and Skills Australia's national employment forecasts from May-25 indicate potential future demand within Flagstaff Hill. National employment is projected to expand by 6.6% over five years and 13.7% over ten years, but growth rates vary significantly between industries. Applying these projections to Flagstaff Hill's employment mix suggests local employment should increase by 6.8% over five years and 14.2% over ten years (simple weighting extrapolation for illustrative purposes).

The economic profile demonstrates above-average performance, with income metrics exceeding national benchmarks based on AreaSearch comparative assessment

According to AreaSearch's aggregation of the latest postcode level ATO data released for financial year ended June 2023, Flagstaff Hill had a median income among taxpayers of $53,707. The average income stood at $62,544. This is below the national average. In Greater Adelaide, the median and average incomes were $54,808 and $66,852 respectively. Based on Wage Price Index growth of 8.8% since financial year ended June 2023, current estimates for Flagstaff Hill would be approximately $58,433 (median) and $68,048 (average) as of September 2025. According to the 2021 Census figures, household, family and personal incomes in Flagstaff Hill cluster around the 64th percentile nationally. Distribution data shows that 36.6% of the population (3,851 individuals) fall within the $1,500 - $2,999 income range. This reflects patterns seen at regional levels where 31.8% similarly occupy this range. After housing costs, residents retain 88.3% of their income. The area's SEIFA income ranking places it in the 7th decile.

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

Flagstaff Hill's dwellings were 96.5% houses and 3.5% other types in the latest Census, compared to Adelaide metro's 75.2% houses and 24.9% others. Home ownership in Flagstaff Hill was 39.0%, with mortgages at 50.5% and rentals at 10.5%. Median monthly mortgage repayments were $1,733, higher than Adelaide metro's $1,562. Median weekly rents were $385, compared to Adelaide metro's $320. Nationally, Flagstaff Hill's mortgage repayments were lower than the Australian average of $1,863, while rents exceeded the national figure of $375.

Flagstaff Hill features high concentrations of family households, with a higher-than-average median household size

Family households account for 83.2% of all households, including 40.1% that are couples with children, 33.7% that are couples without children, and 8.3% that are single parent families. Non-family households make up the remaining 16.8%, with lone person households at 15.6% and group households comprising 1.5% of the total. The median household size is 2.7 people, which is larger than the Greater Adelaide average of 2.5.

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

Flagstaff Hill's educational attainment is notably higher than broader averages. Among residents aged 15 and above, 30.4% have university qualifications, compared to the SA3 area's 18.9%. This educational advantage positions Flagstaff Hill favourably for knowledge-based opportunities. Bachelor degrees are most prevalent at 20.4%, followed by postgraduate qualifications (6.6%) and graduate diplomas (3.4%).

Vocational credentials are also prominent, with 35.3% of residents aged 15 and above holding such qualifications – advanced diplomas (12.3%) and certificates (23.0%). Educational participation is high in Flagstaff Hill, with 27.3% of residents currently enrolled in formal education. This includes 9.6% in primary education, 7.2% in secondary education, and 5.9% pursuing tertiary education.

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

Flagstaff Hill has 38 active public transport stops, all serving buses. These stops are covered by 23 different routes that together facilitate 646 weekly passenger trips. Residents enjoy good accessibility to these services, with an average distance of 331 meters to the nearest stop. Most residents commute outwards from this primarily residential area, relying predominantly on cars (90%). On average, there are 1.9 vehicles per dwelling in Flagstaff Hill, exceeding regional averages. Just 12.5% of residents work from home, as recorded in the 2021 Census, potentially influenced by COVID-19 conditions.

Across all routes, service frequency stands at an average of 92 trips daily, translating to approximately 17 weekly trips per individual stop.

Flagstaff Hill's residents are extremely healthy with very low prevalence of common health conditions across all age groups

Analysis of health metrics shows strong performance throughout Flagstaff Hill.

Mortality rates and chronic condition prevalence were found to be very low across all age groups. Private health cover was relatively low at approximately 52% of the total population (~5,443 people). The most common medical conditions in the area were arthritis and mental health issues, affecting 7.8% and 7.6% of residents respectively. 69.2% of residents declared themselves completely clear of medical ailments compared to 67.9% across Greater Adelaide. The under-65 population demonstrates better than average health outcomes. The area has 21.5% of residents aged 65 and over (2,262 people), which is higher than the 19.3% in Greater Adelaide. Health outcomes among seniors are particularly strong, with national rankings broadly in line with the general population.

The level of cultural diversity witnessed in Flagstaff Hill was found to be slightly above average when compared nationally for a number of language and cultural background related metrics

Flagstaff Hill's population showed higher cultural diversity than most local areas, with 13.6% speaking a language other than English at home and 28.4% born overseas. Christianity was the predominant religion, accounting for 42.9%. Judaism, however, was slightly overrepresented at 0.2%, compared to Greater Adelaide's 0.1%.

Regarding ancestry, the top groups were English (33.0%), Australian (23.8%), and Other (7.2%). Notable differences included Welsh (1.0% vs regional 0.6%), Polish (1.2% vs 1.0%), and German (5.8% vs 5.1%) representations in Flagstaff Hill.

Flagstaff Hill hosts a notably older demographic compared to the national average

The median age in Flagstaff Hill is 43 years, which is significantly higher than Greater Adelaide's average of 39 years and considerably older than Australia's average of 38 years. Compared to Greater Adelaide, Flagstaff Hill has a higher concentration of residents aged 65-74 (11.5%) but fewer residents aged 25-34 (9.3%). Following the 2021 Census, the proportion of residents aged 75-84 grew from 5.8% to 8.3%. Conversely, the proportion of residents aged 45-54 declined from 14.2% to 12.8%. By 2041, demographic projections reveal significant shifts in Flagstaff Hill's age structure. The 85+ group is projected to grow by 167%, reaching 477 people from 178. Conversely, the 65-74 cohort is projected to decline by 4 people.