Flagstaff Hill

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

Flagstaff Hill's population was approximately 10,784 people as per the 2021 Census. By November 2025, this had increased to around 11,220, reflecting a growth of 436 people (4.0%). This increase is inferred from the estimated resident population of 11,185 in June 2024 and an additional 35 validated new addresses since the Census date. The population density was approximately 1,150 persons per square kilometer, similar to averages seen across other locations assessed by AreaSearch. Flagstaff Hill's growth rate of 4.0% since the census is within 0.9 percentage points of the SA3 area (4.9%), indicating competitive growth fundamentals. Overseas migration contributed approximately 71.4% of overall population gains during recent periods.

AreaSearch uses 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 by age category are adopted, based on 2021 data and adjusted using weighted aggregation from LGA to SA2 levels. Based on the latest annual ERP population numbers, Flagstaff Hill is expected to grow by approximately 1,314 persons to 2041, reflecting an increase of 11.4% in total over the 17 years.

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

Flagstaff Hill has recorded approximately 21 residential properties granted approval annually. Over the past five financial years, from FY-21 to FY-25, a total of 105 homes were approved, with an additional 12 approved in FY-26 so far. On average, over these years, around 3.5 new residents per year are associated with each home built.

This demand significantly outpaces supply, typically exerting upward pressure on prices and increasing competition among buyers. The average construction cost value for new properties during this period was $226,000, which is under regional levels, suggesting more affordable housing choices for buyers. In the current financial year, $2.3 million in commercial approvals have been registered, indicating minimal commercial development activity compared to Greater Adelaide. Flagstaff Hill has significantly less development activity overall, with 61.0% below the regional average per person. This scarcity of new dwellings typically strengthens demand and prices for existing properties.

Additionally, this activity is under the national average, suggesting the area's established nature and potential planning limitations. Recent development in Flagstaff Hill has been entirely comprised of standalone homes, maintaining the area's traditional suburban character with a focus on family homes appealing to those seeking space. With around 777 people per approval, it indicates a mature, established area. According to the latest AreaSearch quarterly estimate, Flagstaff Hill is projected to add 1,279 residents by 2041. If current construction levels persist, housing supply could lag population growth, likely intensifying buyer competition and underpinning price growth.

Flagstaff Hill has limited levels of nearby infrastructure activity, ranking in the 17thth percentile nationally

Changes to local infrastructure significantly impact an area's performance. AreaSearch identified twelve projects that may affect the region. Notable ones include Living Choice Flagstaff Hill, Flagstaff Hill Reserve Revegetation Project, Flinders Medical Centre Southern Redevelopment Stage 1 (Acute Services Building), and Urban Creek Resilience and Recovery Project - Sauerbier and Homestead Creeks. The following list details those most likely to be 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 strong representation in essential services sectors. Its unemployment rate is 1.6%, lower than Greater Adelaide's 3.9%.

Employment growth over the past year was estimated at 3.4%. As of September 2025, 6,447 residents are employed, with an unemployment rate of 2.3%, and workforce participation at 66.2%. Key employment sectors include health care & social assistance, education & training, and retail trade. Education & training has notably high concentration, being 1.3 times the regional average.

Manufacturing employs 5.8% of local workers, below Greater Adelaide's 7.0%. The area offers limited local employment opportunities. Between September 2024 and September 2025, employment increased by 3.4%, labour force by 3.3%, keeping unemployment broadly flat. In contrast, Greater Adelaide saw employment growth of 3.0% with a slight fall in unemployment. State-level data to 25-Nov-25 shows SA employment grew by 1.19% year-on-year, adding 10,710 jobs, with the state unemployment rate at 4.0%. National employment forecasts from May-25 suggest national growth of 6.6% over five years and 13.7% over ten years. Applying these projections to Flagstaff Hill's employment mix indicates local employment should increase by 6.8% over five years and 14.1% over ten years, though this is a simple extrapolation for illustrative purposes only.

Income analysis reveals strong economic positioning, with the area outperforming 60% of locations assessed nationally by AreaSearch

According to AreaSearch's aggregation of the latest postcode level ATO data released for financial year 2022, Flagstaff Hill SA2 had a median income among taxpayers of $53,283. The average income stood at $62,016. This was below the national average and compared to levels of $52,592 and $64,886 across Greater Adelaide respectively. Based on Wage Price Index growth of 12.83% since financial year 2022, current estimates would be approximately $60,119 (median) and $69,973 (average) as of September 2025. Census data revealed household, family and personal incomes in Flagstaff Hill cluster around the 62nd percentile nationally. Income analysis showed that the $1,500 - 2,999 bracket dominated with 36.5% of residents (4,095 people), reflecting patterns seen in the region where 31.8% similarly occupied this range. After housing costs, residents retained 88.2% of income, indicating strong purchasing power. The area's SEIFA income ranking placed 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 dwelling structures, as per the latest Census, consisted of 95.2% houses and 4.8% other dwellings. In comparison, Adelaide metro had 89.2% houses and 10.7% other dwellings. Home ownership in Flagstaff Hill was at 38.8%, with mortgaged dwellings at 49.3% and rented ones at 11.9%. The median monthly mortgage repayment was $1,733, higher than Adelaide metro's average of $1,452. Median weekly rent in Flagstaff Hill was $375, compared to Adelaide metro's $314. Nationally, Flagstaff Hill's mortgage repayments were lower than the Australian average of $1,863, while rents were comparable at $375.

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

Family households account for 81.8 percent of all households, including 39.2 percent couples with children, 33.0 percent couples without children, and 8.9 percent single parent families. Non-family households make up the remaining 18.2 percent, with lone person households at 16.1 percent and group households comprising 2.1 percent 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 residents aged 15+ have a higher proportion with university qualifications (30.5%) compared to the broader SA3 area (18.9%). This educational advantage is driven by bachelor degrees (20.4%), postgraduate qualifications (6.7%), and graduate diplomas (3.4%). Vocational credentials are also prominent, with 35.0% of residents holding such qualifications, including advanced diplomas (12.0%) and certificates (23.0%). Educational participation is notably high, with 27.6% of residents currently enrolled in formal education, including primary (9.5%), secondary (7.1%), and tertiary education (6.2%).

Educational participation is notably high, with 27.6% of residents currently enrolled in formal education. This includes 9.5% in primary education, 7.1% in secondary education, and 6.2% pursuing tertiary education.

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

Flagstaff Hill has 43 active public transport stops, all of which are bus stops. These stops are served by 30 different routes that together facilitate 1,270 weekly passenger trips. The accessibility of these services is rated as good, with residents on average located 326 meters from the nearest stop.

On average, there are 181 trips per day across all routes, which equates to approximately 29 weekly trips per individual stop.

Flagstaff Hill's residents are healthier than average in comparison to broader Australia with prevalence of common health conditions quite low across both younger and older age cohorts

Health data for Flagstaff Hill shows a relatively low prevalence of common health conditions across both younger and older age groups. The rate of private health cover is approximately 51% (~5,677 people), compared to 48.6% across Greater Adelaide.

The most prevalent medical conditions are arthritis (7.8%) and mental health issues (7.7%). A total of 69.2% of residents report no medical ailments, compared to 62.9% in Greater Adelaide. In Flagstaff Hill, 21.1% of residents are aged 65 and over (2,370 people). Health outcomes among seniors in the area are particularly strong, performing better than the general population in health metrics.

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, surveyed in 2016, had a higher cultural diversity than most local areas, with 14.4% of residents speaking languages other than English at home and 28.6% born overseas. Christianity was the predominant religion, accounting for 42.7%. Judaism, though small at 0.2%, was more prevalent compared to Greater Adelaide's 0.1%.

Top ancestral groups were English (32.4%), Australian (23.8%), and Other (7.4%). Notable ethnic group differences included Welsh (0.9% vs regional 0.8%), Polish (1.2% vs 0.9%), and German (5.8% vs 5.4%).

Flagstaff Hill's median age exceeds the national pattern

Flagstaff Hill's median age is 42, slightly higher than Greater Adelaide's figure of 39 and significantly above the national norm of 38. The 65-74 age group comprises 11.6% of Flagstaff Hill's population, higher than Greater Adelaide, while the 25-34 cohort makes up 9.9%, lower than Greater Adelaide. According to the 2021 Census, the 75 to 84 age group has increased from 5.7% to 7.8%. Conversely, the 45 to 54 age group has decreased from 14.0% to 12.8%. By 2041, demographic modeling indicates significant changes in Flagstaff Hill's age profile. The 85+ group is projected to grow by 170%, reaching 537 people from 198. Meanwhile, the 65 to 74 age range is expected to decrease by 35.