Tea Tree Gully

Population growth drivers in Tea Tree Gully are strong compared to national averages based on AreaSearch's ranking of recent, and medium to long-term trends

As of November 2025, the estimated population of Tea Tree Gully is around 3,379, a decrease of 120 people from the 2021 Census figure of 3,499. This change is inferred from AreaSearch's estimation of the resident population at 3,377 based on the latest ERP data release by the ABS in June 2024 and an additional 23 validated new addresses since the Census date. The population density stands at approximately 709 persons per square kilometer. Over the past decade, Tea Tree Gully has shown a compound annual growth rate of 0.7%, outpacing other SA3 areas. Overseas migration contributed around 86% of overall population gains during recent periods. AreaSearch's projections for Tea Tree Gully are based on ABS/Geoscience Australia data released in 2024, using 2022 as the base year.

For areas not covered by this data and years post-2032, SA State Government's Regional/LGA projections by age category, released in 2023 and based on 2021 data, are adopted with adjustments made employing a method of weighted aggregation of population growth from LGA to SA2 levels. By 2041, Tea Tree Gully is projected to increase its population by approximately 346 persons, reflecting an overall increase of about 15.9% over the 17-year period.

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

Tea Tree Gully recorded approximately 14 residential properties granted approval per year based on AreaSearch analysis of ABS building approval numbers. Around 73 homes were approved over the past five financial years, from FY21 to FY25, and 3 more have been approved in FY26 so far. On average, 1.6 new residents were associated with each dwelling constructed annually between FY21 and FY25.

The average construction cost of new dwellings was $320,000 during this period. In FY26, there have been $549,000 in commercial approvals, indicating limited commercial development activity compared to residential. Tea Tree Gully has 13.0% less building activity per person than Greater Adelaide and ranks at the 46th percentile nationally for dwelling choices, suggesting fewer options for buyers and supporting demand for existing dwellings.

New developments consist of 92.0% standalone homes and 8.0% townhouses or apartments, maintaining the area's low-density character. There are estimated to be 356 people per dwelling approval in Tea Tree Gully, reflecting its quiet development environment. According to AreaSearch's latest quarterly estimate, the population is expected to grow by 538 residents by 2041, potentially increasing competition among buyers as construction maintains a reasonable pace with projected growth.

Tea Tree Gully has moderate levels of nearby infrastructure activity, ranking in the 48thth percentile nationally

No changes can impact an area's performance more than alterations to local infrastructure, major projects, and planning initiatives. Zero projects have been identified by AreaSearch that could potentially affect this area. Significant projects include Tea Tree Gully Sustainable Sewers Program, Golden Grove Neighbourhood Code Amendment, Northern Adelaide Irrigation Scheme (NAIS) - SA Water, and SA Public Housing Maintenance and Services Contracts. The following list details those likely to be most relevant.

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AreaSearch analysis reveals Tea Tree Gully significantly outperforming the majority of regions assessed nationwide

Tea Tree Gully has a skilled workforce with well-represented essential services sectors. The unemployment rate was 2.2% in the past year, with an estimated employment growth of 1.3%.

As of June 2025, 1,943 residents were employed while the unemployment rate was 1.8% lower than Greater Adelaide's rate of 4.0%. Workforce participation was similar to Greater Adelaide's 61.7%. The dominant employment sectors among residents included health care & social assistance, construction, and education & training. Construction was particularly strong with an employment share 1.3 times the regional level.

However, health care & social assistance was under-represented at 15.9% compared to Greater Adelaide's 17.7%. The area offered limited local employment opportunities as indicated by the Census working population vs resident population count. Over the 12 months to June 2025, employment increased by 1.3% while labour force increased by 1.4%, keeping the unemployment rate stable at around 2.2%. In comparison, Greater Adelaide saw employment grow by 2.1%, labour force expand by 2.1%, and a marginal rise in unemployment. Jobs and Skills Australia's national employment forecasts from Sep-2022 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, with varying rates between industry sectors. Applying these projections to Tea Tree Gully's employment mix suggests local employment should increase by approximately 6.5% over five years and 13.5% over ten years.

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

Tea Tree Gully's median income among taxpayers was $56,490 and average income stood at $63,430 in financial year 2022, according to latest ATO data aggregated by AreaSearch. These figures compare to Greater Adelaide's median of $52,592 and average of $64,886 respectively. Based on Wage Price Index growth of 12.83% from financial year 2022 to September 2025, current estimates would be approximately $63,738 (median) and $71,568 (average). According to 2021 Census figures, household, family, and personal incomes in Tea Tree Gully rank modestly, between the 41st and 49th percentiles. Income distribution shows that 31.7% of residents (1,071 people) fall into the $1,500 - 2,999 bracket, similar to the broader area where 31.8% occupy this bracket. Housing costs are manageable with 86.9% retained, but disposable income is below average at the 46th percentile and the area's SEIFA income ranking places it in the 6th decile.

Tea Tree Gully is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership

Tea Tree Gully's dwelling structure, as per the latest Census, consisted of 90.1% houses and 9.9% other dwellings (semi-detached, apartments, 'other' dwellings), compared to Adelaide metro's 88.6% houses and 11.3% other dwellings. Home ownership in Tea Tree Gully stood at 41.2%, with mortgaged dwellings at 44.4% and rented ones at 14.4%. The median monthly mortgage repayment was $1,600, above the Adelaide metro average of $1,517. Median weekly rent in Tea Tree Gully was $325, compared to Adelaide metro's $330. Nationally, Tea Tree Gully's mortgage repayments were lower than the Australian average of $1,863, and rents were substantially below the national figure of $375.

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%. The median household size is 2.5 people, aligning with the Greater Adelaide average.

The educational profile of Tea Tree Gully exceeds national averages, with above-average qualification levels and academic performance metrics

In Tea Tree Gully, educational qualifications trail regional benchmarks. Among residents aged 15+, 23.8% hold university degrees compared to Australia's 30.4%. Bachelor degrees are the most common at 16.3%, followed by postgraduate qualifications (4.7%) and graduate diplomas (2.8%). Vocational credentials are prominent, with 38.1% of residents aged 15+ holding them, including advanced diplomas (11.1%) and certificates (27.0%).

Educational participation is high at 25.4%, comprising primary education (9.2%), secondary education (6.2%), and tertiary education (5.2%). Tea Tree Gully Primary School and Saint David's Parish School serve a total of 455 students, with the area demonstrating above-average socio-educational conditions (ICSEA: 1062). Both schools focus exclusively on primary education, with secondary options available in surrounding areas.

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

Transport analysis shows 22 active stops operating in Tea Tree Gully, offering mixed bus services. These are served by 8 routes, delivering 798 weekly passenger trips. Accessibility is rated excellent, with residents typically 188 meters from nearest stop.

Service frequency averages 114 trips daily across all routes, equating to about 36 weekly trips per stop.

Health performance in Tea Tree Gully is lower than average with common health conditions somewhat prevalent across both younger and older age cohorts

Tea Tree Gully faces significant health challenges with common health conditions prevalent across both younger and older age cohorts. The rate of private health cover in the area is approximately 52%, which is slightly higher than the average SA2 area's 50%.

This compares to a rate of 50.0% across Greater Adelaide, with around 1,759 people having private health cover in Tea Tree Gully. The most common medical conditions are arthritis and mental health issues, impacting 9.3% and 8.4% of residents respectively. Conversely, 66.1% of residents declared themselves completely clear of medical ailments, compared to 66.3% across Greater Adelaide. The area has a higher proportion of seniors aged 65 and over at 22.8%, with around 770 people falling into this age category, compared to the Greater Adelaide average of 21.2%. Despite this, health outcomes among seniors in Tea Tree Gully are above average and perform better than the general population in health metrics.

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, as per the census conducted on 29 August 2016, had a cultural diversity below average. Of its population, 79.1% were born in Australia, with 92.1% being citizens and 93.3% speaking English only at home. Christianity was the predominant religion, comprising 45.6%.

The category 'Other' was overrepresented compared to Greater Adelaide, making up 1.3% versus 2.1%. In terms of ancestry, the top three groups were English (33.9%), Australian (25.9%), and Scottish (6.9%). Notably, German (6.6%) and Welsh (0.8%) were overrepresented compared to regional averages of 5.8% and 0.7%, respectively, while Russian was also slightly higher at 0.5%.

Tea Tree Gully hosts an older demographic, ranking in the top quartile nationwide

The median age in Tea Tree Gully is 44 years, which is notably higher than Greater Adelaide's average of 39 years and also exceeds the Australian median of 38 years. Compared to Greater Adelaide's average, the 75-84 age cohort is over-represented in Tea Tree Gully at 9.2%, while the 25-34 age group is under-represented at 11.5%. Between the 2021 Census and present day, the 35 to 44 age group has grown from 12.3% to 13.5% of the population. Conversely, the 65 to 74 age cohort has declined from 12.4% to 11.1%, and the 45 to 54 age group has dropped from 13.5% to 12.3%. Population forecasts for Tea Tree Gully indicate substantial demographic changes by 2041, with the 45 to 54 age cohort projected to expand by 94 people (23%), growing from 415 to 510 individuals.