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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
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Flagstaff Hill has an estimated 10,646 residents, up from 10,184 at the 2021 Census — a change of 462 people, or 4.5%. Growth has averaged 0.9% a year over five years. 129 new addresses have been validated here since Census night. That puts 1,355 residents on each square kilometre. Population is estimated from ABS Estimated Resident Population releases and GNAF address data, re-based from the 2021 Census and updated annually.
Detail
Demographic assessments combining broader ABS updates and 129 validated new addresses post-Census indicate the suburb of Flagstaff Hill has an estimated resident count of 10,646 as of Aug 2026. This represents an addition of 462 people (4.5%) relative to the 10,184 people counted at the 2021 Census, building upon AreaSearch's June 2025 ERP evaluation of 10,637 residents. The suburb of Flagstaff Hill registers a population density of 1,354 persons per square kilometer, tracking higher than the benchmark across evaluated national locations. Furthermore, the local 4.5% post-Census expansion sits within 1.5 percentage points of the broader SA3 area (6.0%), with overseas migration serving as the principal driver by generating approximately 71.0% of recent population gains.
Projections utilize ABS/Geoscience Australia 2024 releases using 2022 as a base, supplemented where necessary by 2023 SA State Government age-cohort figures based on 2021 numbers aggregated to the SA2 tier. Looking toward 2041, the suburb of Flagstaff Hill is projected to experience growth slightly beneath the national statistical median, expanding by 1,102 persons according to aggregated SA2 calculations to deliver an overall 16-year increase of 10.3%.
Frequently Asked Questions - Population
76 new dwellings have been approved in Flagstaff Hill over the past five years, an average of 15 a year. That is 1.1 approvals per 1,000 residents. Approvals are currently running at an annualised 17, broadly in line with that longer-run average. Figures come from ABS building approvals aggregated to this Suburb (SAL) boundary and are updated monthly as the ABS releases them.
Detail
Statistical allocations of ABS building approvals show that the local market has averaged around 15 residential approvals annually, yielding roughly 76 homes across the prior 5 financial years, with 17 approvals logged to date in FY-25. Across the period spanning FY-21 and FY-25, the addition of 6.5 new residents for each constructed residence demonstrates a clear supply shortfall relative to incoming demand, fostering competitive purchasing conditions while newly sanctioned dwellings carry an average construction cost of $425,000. Residential building volumes sit notably below the wider metropolitan baseline, trailing the per-capita average for Greater Adelaide by 78.0% and reflecting a mature market facing potential expansion constraints.
Detached houses account for 91.0% of recent approvals, with medium and high-density housing representing 9.0%, preserving the low-density family-oriented environment. A ratio of around 778 people per approval further underscores the established character of the locality. Longer-term demographic forecasts anticipate an influx of 1,093 residents by 2041 compared to recent quarterly assessments. Should current building rates persist, residential supply may struggle to accommodate demographic expansion, reinforcing demand pressures and bolstering asset valuations.
Frequently Asked Questions - Development
Development applications around Flagstaff Hill
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| Lodged | Address | Description | Type | Distance | Status |
|---|
SOURCE: Planning portals and council registers, compiled by AreaSearch. Distance & bearing measured from the suburb midpoint.
AreaSearch tracks 2 current infrastructure and development projects inside Flagstaff Hill, worth an estimated $42 million. A further 20 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $1.2 billion. 8 are already under construction and 5 are due for completion within three years. The pipeline spans residential development, education & training and sports & recreation. Records are compiled from Infrastructure Australia, state agencies, council planning portals and public announcements, reviewed and updated daily, then ranked by proximity, construction stage, completion horizon and project scale.
Detail
Capital investments and urban planning initiatives play an essential role in shaping local development patterns, with AreaSearch tracking 9 influential projects in the surrounding catchment. Key developments include the Living Choice Flagstaff Hill project, the Flagstaff Hill Reserve Revegetation Project, the Flinders Medical Centre Southern Redevelopment Stage 1 (Acute Services Building), and the Urban Creek Resilience and Recovery Project - Sauerbier and Homestead Creeks.
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Frequently Asked Questions - Infrastructure
Flagstaff Hill Reserve Revegetation Project
Environmental restoration project focusing on native vegetation revegetation, erosion control, biodiversity enhancement, and habitat creation. Includes community education components and ongoing monitoring to ensure ecosystem restoration success.
Living Choice Flagstaff Hill
South Australia's first integrated golf course and retirement community. Stage 1 (42 villas and The Range with 17 apartments) is complete, and Stage 2 (The Summit and The Fairway) with a new golf clubhouse and wellness facilities is now open. The village features a wellness centre, indoor heated pool, cinema, restaurant and bar, and other resident amenities.
Flinders Medical Centre Southern Redevelopment Stage 1 (Acute Services Building)
The Flinders Medical Centre Stage 1 Southern Redevelopment is a major $572 million public healthcare expansion delivered by Built Environs for SA Health and the Department for Infrastructure and Transport. The centerpiece is a seven-storey Acute Services Building adding 98 clinical beds, two 32-bed inpatient wards, a 16-bed satellite ICU, eye surgery suites, and four operating theatres. The building topped out in mid-2026 and is scheduled to open to patients in early 2028.
Urban Creek Resilience and Recovery Project - Sauerbier Creek and Homestead Creek
Watercourse rehabilitation works for Sauerbier Creek and Homestead Creek in Aberfoyle Park, funded by an additional AUD 1.83 million from the Australian Government Natural Heritage Trust under the Urban Rivers and Catchments Program and delivered by the City of Onkaparinga. The project is improving stormwater flows, creek banks, erosion control, water quality, native vegetation, wildlife habitat and community access to nature. Current works include selective woody weed removal in February and March 2026, followed by local native planting during autumn and winter 2026.The broader Urban Creek Resilience and Recovery program is expected to run over five years to 2028-29.
Thalassa Park Master Plan
Master plan for the future enhancement of Thalassa Park, including upgraded playgrounds, walking and cycling trails, event spaces, gardens, accessibility improvements and the Storybook Walk sculpture park. As of the latest council update, the draft master plan has been refined with the Thalassa Park and Gardens Trust, including cost estimates and staged priorities to support future budgeting and grant applications. Community consultation on the revised draft is expected once the documents are finalised.
Flagstaff Road Upgrade
Upgrade of approximately 3.3 km of Flagstaff Road including duplication of the remaining three-lane section to a permanent four-lane divided carriageway, intersection improvements, upgraded drainage, shared walking and cycling paths, lighting and road safety improvements. Construction has been underway with staged traffic management and community updates.
Flagstaff Hill Sports Ground Upgrade
Comprehensive upgrade of sporting facilities including new clubrooms, improved playing surfaces, enhanced lighting, modern amenities, playground equipment, and accessibility improvements to serve the growing Flagstaff Hill community.
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.
6,162 residents of Flagstaff Hill are employed, from a labour force of 6,256. Unemployment sits at 1.5%, with participation at 70.9%. Weighted for its industry mix, the area's sectors are forecast to grow about 6.8% nationally over five years. That reflects industry composition only and makes no allowance for local population growth. The working-day population is estimated at 7,962, about 75% of the resident population, so more people leave the area for work than travel in. Unemployment and labour force come from ABS Small Area Labour Markets, updated quarterly; the industry and occupation profile is from the 2021 Census.
Detail
The local labour market is characterized by a strong presence in essential services, a low unemployment rate of 1.5%, and an annual employment gain of 5.2% derived from aggregated statistical datasets. As of March 2026, employed residents total 6,162, with joblessness tracking 2.3 percentage points below the 3.8% recorded across Greater Adelaide. Labour force participation stands at 70.9% compared to 66.4% across the broader capital, while Census records show only 12.5% working from home, subject to the prevailing Covid-19 restrictions of that time. Resident employment centers primarily on health care & social assistance, education & training, and retail trade.
The local workforce shows high concentration in education & training, exceeding the regional baseline by 1.3 times. Conversely, manufacturing engages 5.7% of working residents against 7.0% regionally, and comparisons between resident numbers and local workplace counts highlight that the area functions predominantly as a commuter suburb with limited internal commercial positions. Aggregated SALM and ABS figures over the trailing 12-month period show a 5.2% increase in employment alongside a 5.1% rise in the labour pool, reducing local unemployment by 0.1 percentage points, whereas Greater Adelaide registered job growth of 4.2%, labour expansion of 4.0%, and a 0.2 percentage point unemployment reduction. National Mar-26 projections from Jobs and Skills Australia point to nationwide employment expansion of 6.6% across five years and 13.7% over ten years. Mapping these industry variations across the local occupational profile yields projected job growth of 6.8% over five years and 14.2% over ten years via simple weighting extrapolation.
Frequently Asked Questions - Employment
Median household income in Flagstaff Hill is $2,080 a week (about $108,000 a year), with median personal income at $844 a week. ATO records put median taxable income at $53,707 a year against an average of $62,544. Household income is from the 2021 Census; taxable income is from ATO Taxation Statistics for the latest financial year available, indexed forward using the ABS Wage Price Index.
Detail
Postcode taxation data from financial year 2023 records a local median income of $53,707 and an average of $62,544, sitting below Greater Adelaide's median of $54,808 and average of $66,852. Applying the 10.17% Wage Price Index rise recorded since financial year 2023 positions estimated March 2026 earnings at approximately $59,169 (median) and $68,905 (average). Census 2021 data places area incomes around the 64th percentile nationally, with 36.6% of residents (3,896 people) earning between $1,500 - 2,999 compared to 31.8% regionally. Strong financial capacity is evidenced by residents retaining 88.3% of income after housing expenses, supported by a 7th decile SEIFA ranking.
Frequently Asked Questions - Income
Flagstaff Hill had 3,617 occupied dwellings at the 2021 Census, 97% detached houses and 0% apartments. 51% are owned with a mortgage, 11% rented and 39% owned outright. At that Census the median rent was $385 a week and the median mortgage repayment $1,733 a month. Rent absorbs 18.5% of household income here and mortgage repayments 19.2%. Dwelling stock, tenure and housing costs are 2021 Census measures — the only source that counts dwellings at this boundary size.
Detail
Single-family houses comprise 96.5% of local residential stock with semi-detached dwellings, apartments, and other configurations accounting for 3.5%, compared to 75.2% houses and 24.9% other dwellings across metropolitan Adelaide. Outright home ownership stands at 39.0%, while mortgaged properties represent 50.5% and tenancies make up 10.5%. Typical monthly mortgage commitments reach $1,733 compared to the metropolitan median of $1,562 and national average of $1,863, while weekly rent medians stand at $385 against $320 regionally and $375 nationally.
Frequently Asked Questions - Housing
Flagstaff Hill counted 3,617 households at the 2021 Census, averaging 2.7 people each. 40% are couples with children, more than in 79% of areas nationally, against 34% couples without children. 16% of households are people living alone, and families average 1.6 children. Household and family composition is measured only by the Census, so these are 2021 figures.
Detail
Families constitute 83.2% of local households, encompassing couples with children at 40.1%, couples without children at 33.7%, and single parent families at 8.3%. Lone person households represent 15.6% and group households make up 1.5%, forming the 16.8% non-family sector. Typical household occupancy is 2.7 people, exceeding the Greater Adelaide benchmark of 2.5.
Frequently Asked Questions - Households
30.4% of adults in Flagstaff Hill hold a university qualification, including 20.4% with a bachelor degree and 6.6% with postgraduate qualifications. A further 23.0% hold a vocational qualification. 2 schools serve the area, with 878 enrolment places and an average ICSEA of 1,067 against a national benchmark of 1,000. Qualifications come from the 2021 Census; school enrolments, ICSEA and results come from ACARA's current release.
Detail
Higher education qualifications are held by 30.4% of residents aged 15+, notably outperforming the SA3 area rate of 18.9%. Bachelor qualifications account for 20.4%, followed by postgraduate credentials at 6.6% and graduate diplomas at 3.4%. Vocational qualifications are held by 35.3% of the population aged 15+, comprising certificates (23.0%) and advanced diplomas (12.3%). Formal study engages 27.3% of the local population. Current educational attendance breaks down into 9.6% in primary schooling, 7.2% in secondary education, and 5.9% enrolled in tertiary institutions.
Frequently Asked Questions - Education
Schools Detail
Public transport in Flagstaff Hill reaches 38 stops on 22 routes, timetabled for about 640 services a week. The typical home sits about 330 m from its nearest stop. Buses carry the largest share of public transport commuters. Households keep an average of 1.9 vehicles. Stop and service counts are built from operators' published GTFS timetables and refresh with each timetable release; vehicle ownership is from the 2021 Census.
Detail
Public transport connectivity comprises 38 bus stops operating across the area, served by 22 distinct routes that generate 644 weekly passenger services. The average distance to the nearest transit access point is 331 meters. Outward commuting relies heavily on private vehicles, with cars accounting for 90% of journey-to-work trips and households owning an average of 1.9 vehicles, while 12.5% recorded working from home at the 2021 Census. Transit schedules provide an average of 92 daily services across the collective route network, translating to approximately 16 weekly trips per designated transit stop.
Frequently Asked Questions - Transport
Transport Stops Detail
69.2% of residents in Flagstaff Hill report no long-term health condition, a healthier profile than 75% of areas nationally. 4.5% need daily assistance with core activities, and 51.7% hold private health cover. The standardised death rate runs at 3.9 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.
Detail
Community wellness indices remain positive, characterized by minimal chronic health conditions and subdued mortality rates across demographic bands, while private health insurance encompasses approximately 52% of the population (~5,507 people). Arthritis and mental health concerns represent the most prevalent diagnosed conditions, affecting 7.8% and 7.6% of residents, while 69.2% report no long-term medical conditions compared to 67.9% across Greater Adelaide. Seniors aged 65 and over constitute 21.7% of the community (2,310 people), outpacing the metropolitan share of 19.1%, and display health outcomes tracking comfortably in line with national age benchmarks.
Frequently Asked Questions - Health
28.4% of Flagstaff Hill residents were born overseas and 13.6% speak a language other than English at home. The largest reported ancestries are English (33.0%) and Australian (23.8%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.
Detail
Cultural diversity metrics indicate that 28.4% of residents were born abroad and 13.6% utilize a non-English language at home. Christianity is the predominant religious faith at 42.9%, while Judaism accounts for 0.2% of the local community compared to 0.1% across Greater Adelaide. English ancestry leads local reporting at 33.0% against the 27.8% regional figure, followed by Australian ancestry at 23.8% and Other backgrounds at 7.2%. Additional ethnic representations include German at 5.8% (vs 5.1% regionally), Polish at 1.2% (vs 1.0%), and Welsh at 1.0% (vs 0.6%).
Frequently Asked Questions - Diversity
The median resident of Flagstaff Hill is 43. 22.3% of residents are aged 15 to 34. Age cohorts are not raw Census counts: the Census split is re-based to the latest ABS population estimates and state projections.
Detail
The local age distribution aligns closely with metropolitan benchmarks, showing a maximum divergence of 5.8 percentage points across broad cohorts. The median age is an estimated 43, matching the 2021 Census baseline and sitting above the Greater Adelaide median of 39 and national figure of 38 recorded at that time. The 45 - 64 age bracket has moderated from 28.0% to an estimated 25.8%, while the 65+ demographic is forecast to drive future growth by adding 439 residents (19%) to reach 2,749 by 2041.
Frequently Asked Questions - Age
Data & MethodBoundaries, Sources & Method for Flagstaff Hill
9 of 14 data sections on this page were updated within the last 12 months — the newest current to Oct 2026.
Everything is aggregated to the Suburb (SAL) boundary shown above, on a 2021 Census baseline. Only 3 sections — housing, households and cultural diversity — still wait on the 2026 Census.
The ledger — source, cycle and currency by section
| Section | Source & update cycle | Currency |
|---|---|---|
| Updated within the last 12 months 9 sections | ||
| Population | ABS, GNAF, Geoscience Australia Annual (ABS ERP) | Aug 2026 2 months ago headline measures · 2021 Census baseline |
| Re-based to the ABS Estimated Resident Population (June 2025 release) and updated with new dwellings from GNAF address data. Current to Aug 2026, with the 2021 Census supplying the small-area baseline. | ||
| Age profile | ABS, Geoscience Australia, State governments Annual | Aug 2026 2 months ago headline measures · 2021 Census baseline |
| Age cohorts are re-based to the latest ABS population estimates and state projections, current to Aug 2026. Each cohort is held as a Census baseline and a current estimate. | ||
| Development & approvals | ABS, GNAF Monthly (ABS approvals) | Aug 2026 2 months ago headline measures · Jul 2026 baseline |
| Property sales & rents | Valuer General, Rental Board, ABS Weekly sales, quarterly rents | Oct 2026 this month headline measures · Sep 2026 baseline |
| Sales from the state Valuer General register, refreshed weekly, and rents from quarterly rental bond lodgements. Both are read live each time this page loads, current to Oct 2026. | ||
| Infrastructure projects | Infrastructure Australia, State agencies, Local governments Daily | Oct 2025 about a year ago all 2 projects tracked here |
| Project pipeline maintained continuously from Infrastructure Australia, state agencies, local government and public announcements. Records are added and revised daily; this area was last updated Oct 2025. | ||
| Employment | ABS, DEWR, JSA Quarterly (ABS SALM) | Mar 2026 7 months ago headline measures · 2021 Census baseline |
| Unemployment and labour force from ABS Small Area Labour Markets, current to Mar 2026. The growth outlook applies Department of Employment (now Jobs and Skills Australia) forecasts for all 19 industry divisions to the local industry mix, so it measures sector composition rather than local expansion and makes no allowance for population growth. Job demand comes from the same agency via its Internet Vacancy Index; industry and occupation structure from the 2021 Census. | ||
| Education | ABS, ACARA Annual (ACARA) | Sep 2026 last month headline measures · 2021 Census baseline |
| Transport | ABS, State Transport Departments Each timetable release | Jul 2026 3 months ago headline measures · 2021 Census baseline |
| Services & amenities | Provider directories, ACECQA Continuous | Sep 2026 last month all 14 measures |
| Annual and financial-year sources 2 sections | ||
| Income | ABS, ATO Annual (ATO) | FY 2023 3 years ago headline measures · 2021 Census baseline |
| ATO taxable income statistics for FY 2023, indexed forward using the Wage Price Index. Census household income provides the distribution detail. | ||
| Health | ABS, ATO Annual | 2024 2 years ago headline measures · 2021 Census baseline |
| Census-measured — next update: 2026 Census 3 sections No more current small-area source exists for these, so they are labelled as Census-measured rather than implied to be current. | ||
| Housing | ABS 5-yearly (Census) | 2021 Census next update 2026 all 30 measures |
| Households | ABS 5-yearly (Census) | 2021 Census next update 2026 all 18 measures |
| Cultural diversity | ABS, Geoscience Australia 5-yearly (Census) | 2021 Census next update 2026 all 44 measures |
"Currency" is the most recent release feeding that section. Where the Census supplies the structural baseline underneath a current headline figure, the row says so.
How the numbers are built
Population
The Census provides the small-area baseline, aggregated from mesh blocks to this boundary. It is then re-based to the ABS Estimated Resident Population (June 2025 release), and new dwellings built since Census night are counted from address data — 129 validated new addresses here. The headline figure is therefore a current estimate for Aug 2026, not a 2021 count (10,184 at the 2021 Census → 10,646 now). Annual growth rates are compound (CAGR), not simple averages.
Age profile
Cohort shares are not raw Census counts. Every cohort is held as a pair — the Census baseline and a current estimate — and the split is re-based using ERP and state population projections, current to Aug 2026. Median age is the Census median plus modelled change since. Charts that show both are labelled "2021 Census vs Current Estimate".
Property sales
Sourced from the state valuation authority's sales register — current, not Census, and refreshed weekly. Medians are calculated from settled transactions in the period shown; periods with very low transaction counts are flagged or suppressed, because a handful of sales can move a median substantially.
Rents
Derived from state rental bond lodgement data, by dwelling type and bedroom count. Bonds are lodged at the start of a new tenancy, so this reflects new lettings, not the whole rented stock.
Development & infrastructure
Building approvals come from current ABS releases; development applications are collected from council and state planning portals; the infrastructure pipeline is compiled from Infrastructure Australia and local government sources. Applications are matched to this boundary by address or coordinates, so very recent lodgements may not yet appear.
Employment & income
Industry and occupation structure comes from the Census, but the headline labour-market indicators do not. Unemployment and labour force are derived from ABS Small Area Labour Markets (quarterly). The employment outlook applies Department of Employment forecasts for all 19 industry divisions to this area's own industry mix (the agency is now Jobs and Skills Australia), as does the Internet Vacancy Index used for job demand. Because it is weighted on industry composition alone, that outlook carries no allowance for local population growth — in fast-growing areas the real rise in local jobs will typically be higher. Income combines Census household income with ATO taxable-income statistics for FY 2023, indexed forward using the Wage Price Index.
Education, transport & amenities
School enrolments, ICSEA and performance come from ACARA's current release, not the Census. Public transport stops and service frequency are derived from GTFS timetable feeds published by state transport departments. Services and amenities are proximity and count scores built from provider directories, refreshed on their own cycle. The Census contributes only the travel-to-work and qualification measures.
Rankings and benchmarks. Where we rank this area, the comparison set is every area of the same boundary type — suburbs against suburbs, SA2s against SA2s. Benchmarks compare this area against its greater capital city region and the national figure for the same measure and period.
Limits worth knowing. Small areas carry larger error margins, and the ABS introduces small random adjustments to Census counts to protect confidentiality — so totals may not sum exactly. Estimates re-based from regional data describe the area's expected trajectory, not a direct count of it. Figures are indicative for research and are not financial, planning or valuation advice.
Cross-check us. The Census baseline for this boundary is at ABS 2021 Census QuickStats (SAL40444). QuickStats reports 2021 only — the figures on this page are more current wherever the ledger shows a later date.