Tea Tree Gully · Council (LGA)
How well-off the area is, how fast its population is growing, and the businesses and new homes here.
Daily life in Tea Tree Gully is shaped by high levels of financial security and strong professional skills. The area is significantly more advantaged than most others, with a typical advantage score of 996 that puts it ahead of about 76% of similar areas.
All council (lga) areas, 2021. The marker is Tea Tree Gully — higher than 71% of areas.
SEIFA indexes ranking relative advantage and disadvantage.
Residents generally have great access to money and education, with both scoring 8 out of 10. This high level of advantage is mirrored by a very low rate of disadvantage, which is better than about 90% of similar areas.
8
Higher than 71% of council (lga) areas.
ABS Index of Relative Socio-economic Advantage and Disadvantage, 2021, as a national decile: 1 = among the 10% most disadvantaged areas in Australia, 10 = among the 10% most advantaged. IRSAD summarises both advantage and disadvantage, so a high score reflects relatively many high-income, well-educated households and few low-income, low-skill ones.
9
Higher than 86% of council (lga) areas.
ABS Index of Relative Socio-economic Disadvantage, 2021, as a national decile: 1 = among the 10% most disadvantaged areas in Australia, 10 = among the least disadvantaged. IRSD focuses on disadvantage alone (low income, low education, unemployment, unskilled occupations), so a higher decile means relatively less disadvantage.
8
Higher than 71% of council (lga) areas.
ABS Index of Economic Resources, 2021, as a national decile: 1 = among the 10% lowest areas for economic resources in Australia, 10 = among the highest. IER reflects the income, housing costs, dwelling size and assets of households, so a higher decile means relatively greater economic resources.
8
Higher than 71% of council (lga) areas.
ABS Index of Education and Occupation, 2021, as a national decile: 1 = among the 10% lowest areas for education and occupation in Australia, 10 = among the highest. IEO reflects residents' qualifications and the skill level of their jobs, so a higher decile means a more highly educated and skilled workforce.
996
Higher than 75% of council (lga) areas.
ABS Index of Relative Socio-economic Advantage and Disadvantage, 2021, as a raw index score (standardised so the Australian average is about 1000). Higher scores indicate relatively greater advantage; lower scores greater disadvantage.
Annual population estimates and change since the census.
The population has grown to 105,120 people. Since 2021, it has increased by 3.0%, which is around the middle for its level but a little below the South Australian figure of 5.6%.
105,120
Higher than 84% of council (lga) areas.
Estimated resident population (ABS), 2025.
3.0%
Lower than 56% of council (lga) areas.
Population growth since the 2021 Census, from ABS annual estimates.
Operating businesses and dwellings approved.
Local commerce is strong with 6,538 businesses, a number larger than about 80% of similar areas. This growth is supported by 531 approved dwellings, which is also higher than about 83% of comparable areas.
6,538
Higher than 77% of council (lga) areas.
Operating businesses (ABS Counts of Australian Businesses), June 2025.
531
Higher than 82% of council (lga) areas.
Dwelling units approved in 2024-25 (ABS Building Approvals).
Australian Bureau of Statistics. (2021). Economy & Advantage in Tea Tree Gully [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/lga/LGA47700/tea-tree-gully/topic/economy-advantage
