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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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Population
Population growth drivers in Tea Tree Gully are slightly above average based on AreaSearch's ranking of recent, and medium term trends
As of May 2026, the estimated population of the suburb of Tea Tree Gully is around 3,804. This figure represents an increase of 305 people since the 2021 Census, which reported a population of 3,499. The latest resident population estimate by AreaSearch is 3,791 as of June 2025, with an additional 25 validated new addresses since the Census date contributing to this increase. This results in a population density ratio of approximately 799 persons per square kilometer, which aligns with averages seen across other locations assessed by AreaSearch. The suburb of Tea Tree Gully has experienced notable growth since the 2021 Census, with an 8.7% increase compared to the SA3 area's 4.1% and the state's growth rate. This growth was primarily driven by overseas migration, contributing approximately 86.0% of overall population gains during recent periods.
For population projections, AreaSearch adopts ABS/Geoscience Australia projections for each SA2 area, released in 2024 with a base year of 2022. For areas not covered and years post-2032, the SA State Government's Regional/LGA projections by age category are used, based on 2021 data and adjusted employing a method of weighted aggregation from LGA to SA2 levels. Looking ahead, the suburb of Tea Tree Gully is expected to grow by approximately 8.3% over the next 16 years, reaching an estimated population of around 4,132 persons by 2041 based on aggregated SA2-level projections.
Frequently Asked Questions - Population
Development
AreaSearch analysis of residential development drivers sees Tea Tree Gully recording a relatively average level of approval activity when compared to local markets analysed countrywide
Tea Tree Gully recorded approximately 17 residential properties granted approval per year. Over the past five financial years, from FY-21 to FY-25, around 85 homes were approved, with an additional 13 approved in FY-26. On average, each new dwelling constructed over these years accommodated 0.9 new residents.
The average construction value of new dwellings was $320,000. This financial year has seen $276,000 in commercial approvals, indicating a primarily residential focus. Tea Tree Gully's construction rates per person are similar to Greater Adelaide's, maintaining market balance.
Recent periods have seen increased development activity. Of the new developments, 88% were standalone homes and 12% townhouses or apartments, preserving the area's low-density nature. There are approximately 156 people per dwelling approval in Tea Tree Gully. Future projections estimate an addition of 315 residents by 2041, with current development patterns indicating that new housing supply should readily meet demand.
Frequently Asked Questions - Development
Development applications around Tea Tree Gully
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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
Tea Tree Gully has emerging levels of nearby infrastructure activity, ranking in the 32ndth percentile nationally
No infrastructure changes significantly influence an area's performance. AreaSearch identified zero projects likely impacting this region. Key initiatives include Tea Tree Gully Sustainable Sewers Program, Golden Grove Neighbourhood Code Amendment, Gawler Line Electrification & Level Crossing Removals, and Northern Adelaide Transport Study.
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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
SA Water Capital Work Delivery Contracts 2024-28
SA Water's record $3.3 billion capital delivery program for the 2024-28 regulatory period, covering water and wastewater infrastructure across South Australia. The program targets water main replacements, sewerage network upgrades, dam upgrades, water tank refurbishments, and treatment process upgrades across metropolitan and regional areas. A central $1.5 billion component supports the South Australian Premier's Housing Roadmap, expanding network capacity to unlock up to 40,000 new allotments, with major focus on Adelaide's northern growth corridors including Angle Vale, Riverlea, and Roseworthy. Six major framework partners (Fulton Hogan Utilities, John Holland and Guidera O'Connor JV, McConnell Dowell and Diona JV, BMD, Diona, and Leed Engineering and Construction) are delivering works across approximately 120 projects. In Year 1 (to June 2025), $681.6 million in capital was invested. The program runs to June 2028.
Northern Adelaide Irrigation Scheme
The Northern Adelaide Irrigation Scheme (NAIS) is a recycled water scheme delivering high-quality treated water from the Bolivar Wastewater Treatment Plant to agribusinesses across the Northern Adelaide Plains. Stage 1 infrastructure was built to provide up to 12 gigalitres per year of climate-independent recycled water for horticulture, floriculture, fruit and nut orchards, table and wine grapes, and high-value broad-acre crops, with the network designed to enable future expansion to 20 gigalitres. Key infrastructure includes an advanced water recycling plant at Bolivar, a transfer pipeline, pump stations, an above-ground earth-banked storage at Korunye, managed aquifer recharge, and a distribution network with farm-gate connection points. Construction began in 2018 and the scheme is operational. As of 2025 around 35 per cent of the contracted volume has been sold, and SA Water has been undertaking a review to assess current and forecast demand and identify potential opportunities for the scheme.
Tea Tree Gully Sustainable Sewers Program
SA Water program to transfer about 4,700 properties in the City of Tea Tree Gully from a council run Community Wastewater Management System with on site septic tanks to a modern sewer network. The project includes staged construction of new wastewater mains, gravity and low pressure sewer connections, new pump stations and on property works, followed by decommissioning and backfilling of septic tanks. Delivery is being rolled out in zones between 2022 and 2028, improving service reliability, reducing overflows and supporting long term water and public health outcomes for the north eastern suburbs of Adelaide.
Gawler Line Electrification & Level Crossing Removals
State and federal government project to electrify the 42km Gawler rail line from Adelaide CBD to Gawler, with 25kV AC overhead wiring, new signalling systems, upgrade of 14 stations, and activation of 13 pedestrian crossings. Electrified passenger services commenced June 2022. The complementary Ovingham Level Crossing Removal ($231M) replaced the high-risk Torrens Road crossing with a new overpass, public plaza and upgraded Ovingham Railway Station, completing in late 2023.
O-Bahn City Access Project
Completed SA Government public transport project extending the O-Bahn from Gilberton into Adelaide city via centrally aligned priority bus lanes on Hackney Road and a dedicated 670 m bus-only tunnel to Grenfell Street. The works improved bus travel time reliability, reduced Inner Ring Route congestion, reconfigured Rundle Road and East Terrace, and added pedestrian and cycling improvements including a shared path and bridge over the River Torrens.
SA Housing Trust Maintenance Contracts Review and Service Program
Statewide maintenance and service contracts for SA Housing Trust public housing properties, covering reactive maintenance, vacancy restoration and minor works across metropolitan and regional South Australia. The program is delivered by Spotless Facility Services, RTC Facilities Maintenance and Torrens Facility Management. A 2024 SA Government review examined payment, timeliness, dispute resolution and contract performance issues, and the government provided additional funding to accelerate maintenance and upgrades on vacant public housing homes.
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.
Adelaide Level Crossing Removal Planning Program
A joint Australian and South Australian Government program to conduct planning studies at priority at-grade level crossing locations across metropolitan Adelaide, and establish a ten-year Level Crossing Removal Program. Adelaide has 126 at-grade level crossings where boom gates can be closed for up to 25% of peak traffic periods. Priority sites under active planning include Cormack Road (Wingfield), Kings Road (Parafield), and Park Terrace (Salisbury). The program commenced in early 2022 and is expected to be completed by late 2026, with the first major removal project - Curtis Road, Munno Para - announced in May 2025 with a $250 million joint funding commitment and construction starting by 2027.
Employment
AreaSearch analysis reveals Tea Tree Gully significantly outperforming the majority of regions assessed nationwide
Tea Tree Gully has a skilled workforce with notable representation in essential services sectors. The unemployment rate was 2.3% as of December 2025. Employment growth over the past year was estimated at 2.5%.
This is based on AreaSearch's aggregation of statistical area data. As of December 2025, 2,015 residents were employed, with an unemployment rate of 1.5% below Greater Adelaide's rate of 3.8%. Workforce participation was similar to Greater Adelaide's 66.0%. According to Census responses, 9.7% of residents worked from home, though Covid-19 lockdown impacts should be considered.
Dominant employment sectors among residents include health care & social assistance, construction, and education & training. Tea Tree Gully shows strong specialization in construction, with an employment share 1.3 times the regional level. However, health care & social assistance is under-represented, at 15.9% of the workforce compared to Greater Adelaide's 17.7%. The area appears to offer limited local employment opportunities, as indicated by the count of Census working population vs resident population. Over the 12 months to December 2025, employment increased by 2.5% while labour force increased by 2.4%, causing the unemployment rate to fall by 0.1 percentage points. This compares to Greater Adelaide, where employment grew by 4.2%, labour force expanded by 3.9%, and unemployment fell by 0.3 percentage points. Jobs and Skills Australia's national employment forecasts from May-25 suggest potential future demand within Tea Tree Gully. These projections estimate national employment growth at 6.6% over five years and 13.7% over ten years. Applying these projections to Tea Tree Gully's employment mix suggests local employment should increase by 6.5% over five years and 13.5% over ten years, though this is a simple weighting extrapolation for illustrative purposes and does not account for localised population projections.
Frequently Asked Questions - Employment
Income
Income levels align closely with national averages, indicating typical economic conditions for Australian communities according to AreaSearch analysis
The suburb of Tea Tree Gully had a lower than average income level nationally according to AreaSearch data based on ATO figures for financial year 2023. The median income among taxpayers was $56,490 and the average income stood at $63,430, compared to Greater Adelaide's figures of $54,808 and $66,852 respectively. As of March 2026, current estimates suggest approximately $62,235 for median income and $69,881 for average income, assuming a 10.17% growth based on the Wage Price Index since financial year 2023. In Tea Tree Gully, household, family, and personal incomes ranked modestly between the 41st and 49th percentiles according to 2021 Census figures. The income distribution showed that the $1,500 - 2,999 bracket dominated with 31.7% of residents (1,205 people), similar to the broader area where 31.8% occupied this bracket. Housing costs were manageable with 86.9% retained, however disposable income was below average at the 46th percentile and the suburb's SEIFA income ranking placed it in the 6th decile.
Frequently Asked Questions - Income
Housing
Tea Tree Gully is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership
In Tea Tree Gully, as per the latest Census data, 90.1% of dwellings were houses while 9.9% consisted of semi-detached homes, apartments, and other types of dwellings. This contrasts with Adelaide metro's figures of 75.2% houses and 24.9% other dwellings. Home ownership in Tea Tree Gully stood at 41.2%, with mortgaged properties making up 44.4% and rented dwellings accounting for 14.4%. The median monthly mortgage repayment in the area was $1,600, exceeding Adelaide metro's average of $1,562. Weekly rent in Tea Tree Gully was recorded at $325, compared to Adelaide metro's figure of $320. Nationally, Tea Tree Gully's mortgage repayments were lower than the Australian average of $1,863, while rents were substantially below the national figure of $375.
Frequently Asked Questions - Housing
Household Composition
Tea Tree Gully has a typical household mix, with a fairly typical median household size
Family households account for 74.7% of all households, including 32.2% couples with children, 31.3% couples without children, and 10.4% single parent families. Non-family households constitute the remaining 25.3%, with lone person households at 23.1% and group households comprising 2.4% of the total. The median household size is 2.5 people, which aligns with the Greater Adelaide average.
Frequently Asked Questions - Households
Local Schools & Education
The educational profile of Tea Tree Gully exceeds national averages, with above-average qualification levels and academic performance metrics
Educational qualifications in Tea Tree Gully trail regional benchmarks, with 23.8% of residents aged 15+ holding university degrees compared to the national average of 30.4%. This gap highlights potential for educational development and skills enhancement. Bachelor degrees are the most common at 16.3%, followed by postgraduate qualifications (4.7%) and graduate diplomas (2.8%). Trade and technical skills feature prominently, with 38.1% of residents aged 15+ holding vocational credentials – advanced diplomas (11.1%) and certificates (27.0%).
Educational participation is notably high, with 25.4% of residents currently enrolled in formal education. This includes 9.2% in primary education, 6.2% in secondary education, and 5.2% 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
Public transport analysis shows 22 active transport stops operating within Tea Tree Gully, serving a mix of bus routes. These stops are covered by 8 individual routes, collectively offering 798 weekly passenger trips. Transport accessibility is rated excellent, with residents typically located 188 metres from the nearest stop. As primarily residential, most residents commute outward. Car remains dominant at 87%, with 10% using bus. Vehicle ownership averages 1.5 per dwelling.
According to the 2021 Census, a relatively low 9.7% of residents work from home, which may reflect COVID-19 conditions. Service frequency averages 114 trips per day across all routes, equating to approximately 36 weekly trips per stop.
Frequently Asked Questions - Transport
Transport Stops Detail
Health
Tea Tree Gully'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 shows Tea Tree Gully residents have relatively positive health outcomes.
AreaSearch's analysis of mortality rates and health conditions found results mostly aligned with national benchmarks. The prevalence of common health conditions is quite low across both younger and older age groups. Approximately 52% (~1,981 people) of the population has private health cover, slightly lower than the average SA2 area. The most prevalent medical conditions are arthritis (9.3%) and mental health issues (8.4%), while 66.1% reported being completely free from medical ailments, compared to 67.9% in Greater Adelaide. Health outcomes among working-age residents are typical. Tea Tree Gully has 23.3% (886 people) of residents aged 65 and over, higher than the 19.2% in Greater Adelaide. Seniors' health outcomes are above average, with national rankings broadly similar to the general population.
Frequently Asked Questions - Health
Cultural Diversity
Tea Tree Gully ranks below the Australian average when compared to other local markets across a number of language and cultural background related metrics
Tea Tree Gully, surveyed in 2016, had a culturally diverse population with 79.1% born in Australia, 92.1% being citizens, and 93.3% speaking English only at home. Christianity was the predominant religion, comprising 45.6%. The 'Other' religious category was slightly overrepresented at 1.3%, compared to Greater Adelaide's 1.8%.
Ancestry-wise, Tea Tree Gully had higher percentages of English (33.9%), Australian (25.9%), and Scottish (6.9%) descent than the regional averages of 27.8%, 14.1%, and 5.0% respectively. Notably, German ancestry was overrepresented at 6.6% compared to Greater Adelaide's 5.1%, Welsh at 0.8% versus 0.6%, and Russian at 0.5% against 0.3%.
Frequently Asked Questions - Diversity
Age
Tea Tree Gully hosts a notably older demographic compared to the national average
The median age in Tea Tree Gully is 44 years, which is higher than Greater Adelaide's average of 39 and also exceeds the Australian median of 38. Compared to Greater Adelaide, the 75-84 age cohort is significantly over-represented in Tea Tree Gully at 9.4%, while the 25-34 age group is under-represented at 11.4%. Between the 2021 Census and now, the 35 to 44 age group has increased from 12.3% to 13.8%, and the 75 to 84 cohort has grown from 8.3% to 9.4%. Conversely, the 45 to 54 age group has declined from 13.5% to 12.2%, and the 65 to 74 age group has dropped from 12.4% to 11.3%. By 2041, population forecasts indicate significant demographic changes in Tea Tree Gully. The 85+ age cohort is projected to grow substantially, increasing by 93 people (94%) from 98 to 192. Meanwhile, the 55 to 64 age group is projected to decrease by 3 people.