Socio-Economic Indexes
SEIFA – disadvantage
About this topic
SEIFA (Socio-Economic Indexes for Areas) ranks Australian areas by relative advantage and disadvantage using Census data. The ABS constructs each index from a weighted combination of variables including household income, educational attainment, employment status, occupation skill level, and housing conditions.
Scores are relative, not absolute - they show how an area compares to all other areas in Australia, not whether residents are "poor" or "wealthy" in dollar terms. A score of 1000 represents the national average. Areas scoring below 1000 have relatively greater disadvantage; areas above have relatively less.
IRSD measures disadvantage only - it identifies areas where residents have fewer economic and social resources, but cannot distinguish between advantaged and average areas. IRSAD captures both ends of the spectrum, incorporating indicators of advantage such as high income and tertiary qualifications alongside disadvantage indicators.
SEIFA scores are widely used in grant applications, needs assessments, and service planning to identify areas requiring targeted investment or support.
Related topics
Key insight
In 2021, Tea Tree Gully (C)'s Index of Relative Socio-economic Disadvantage (IRSD) score was 1030.4, placing it in the 84th percentile nationally. Within Tea Tree Gully (C), scores ranged from Holden Hill (part) to Yatala Vale.
View
1030.4
Tea Tree Gully (C) IRSD score
84th percentile nationally
1092.2
Highest local score
Yatala Vale
964.9
Lowest local score
Holden Hill (part)
Chart view
SEIFA – disadvantage across South Australia LGAs
Compare the selected index across South Australia LGAs with the current municipality highlighted.
Burnside (C)
1082.7
Adelaide Hills (DC)
1081.3
Walkerville (M)
1075.5
Mitcham (C)
1074.9
Unley (C)
1067.2
Prospect (C)
1054.1
Roxby Downs (M)
1047.7
Holdfast Bay (C)
1046.9
Norwood Payneham St Peters (C)
1038.5
Mount Barker (DC)
1037
Lower Eyre Peninsula (DC)
1032.7
Tea Tree Gully (C)
1030.4
Light (RegC)
1027
Grant (DC)
1025.7
Robe (DC)
1022.9
Campbelltown (C) (SA)
1021.4
Kimba (DC)
1019.6
West Torrens (C)
1015
Barossa (DC)
1014.3
Wudinna (DC)
1009.3
Marion (C)
1008
Orroroo/Carrieton (DC)
1005.9
Adelaide (C)
1002.2
Charles Sturt (C)
1000.7
Streaky Bay (DC)
1000.3
Clare and Gilbert Valleys (DC)
997.6
Southern Mallee (DC)
996.8
Tumby Bay (DC)
993.5
Kangaroo Island (DC)
991.5
Cleve (DC)
989.4
Adelaide Plains
987.9
Alexandrina (DC)
987.8
Onkaparinga (C)
987.5
Tatiara (DC)
981.6
Northern Areas (DC)
979.2
Yankalilla (DC)
977.8
Naracoorte and Lucindale (DC)
977.6
Kingston (DC) (SA)
976.9
Mount Remarkable (DC)
974.2
Victor Harbor (C)
962.3
Gawler (T)
960.1
Franklin Harbour (DC)
959
Elliston (DC)
959
Loxton Waikerie (DC)
957.8
Karoonda East Murray (DC)
956.5
Port Adelaide Enfield (C)
952.6
Yorke Peninsula (DC)
951.6
Barunga West (DC)
950.1
Port Lincoln (C)
948.2
Goyder (DC)
946.6
Ceduna (DC)
943.2
Wattle Range (DC)
941.7
The Coorong (DC)
938.6
Flinders Ranges (DC)
933
Mount Gambier (C)
924.1
Copper Coast (DC)
923.7
Renmark Paringa (DC)
922.6
Wakefield (DC)
921
Mid Murray (DC)
914.5
Berri and Barmera (DC)
906.9
Unincorporated SA
904.8
Salisbury (C)
903.7
Murray Bridge (RC)
891
Port Pirie City and Dists (M)
889.4
Port Augusta (C)
888.6
Whyalla (C)
883
Coober Pedy (DC)
868.3
Playford (C)
852.4
Peterborough (DC)
773.1
Maralinga Tjarutja (AC)
643.9
Anangu Pitjantjatjara (AC)
496.3
Data table
SEIFA – disadvantage across South Australia LGAs table
Download the underlying SEIFA scores and percentiles shown in the current view.
| Area | Score | Percentile |
|---|---|---|
| Burnside (C) | 1082.7 | 97 |
| Adelaide Hills (DC) | 1081.3 | 96 |
| Walkerville (M) | 1075.5 | 95 |
| Mitcham (C) | 1074.9 | 95 |
| Unley (C) | 1067.2 | 94 |
| Prospect (C) | 1054.1 | 91 |
| Roxby Downs (M) | 1047.7 | 90 |
| Holdfast Bay (C) | 1046.9 | 90 |
| Norwood Payneham St Peters (C) | 1038.5 | 86 |
| Mount Barker (DC) | 1037 | 85 |
| Lower Eyre Peninsula (DC) | 1032.7 | 85 |
| Tea Tree Gully (C) | 1030.4 | 84 |
| Light (RegC) | 1027 | 81 |
| Grant (DC) | 1025.7 | 80 |
| Robe (DC) | 1022.9 | 79 |
| Campbelltown (C) (SA) | 1021.4 | 78 |
| Kimba (DC) | 1019.6 | 77 |
| West Torrens (C) | 1015 | 75 |
| Barossa (DC) | 1014.3 | 75 |
| Wudinna (DC) | 1009.3 | 73 |
| Marion (C) | 1008 | 72 |
| Orroroo/Carrieton (DC) | 1005.9 | 71 |
| Adelaide (C) | 1002.2 | 68 |
| Charles Sturt (C) | 1000.7 | 67 |
| Streaky Bay (DC) | 1000.3 | 67 |
| Clare and Gilbert Valleys (DC) | 997.6 | 65 |
| Southern Mallee (DC) | 996.8 | 65 |
| Tumby Bay (DC) | 993.5 | 62 |
| Kangaroo Island (DC) | 991.5 | 61 |
| Cleve (DC) | 989.4 | 58 |
| Adelaide Plains | 987.9 | 57 |
| Alexandrina (DC) | 987.8 | 57 |
| Onkaparinga (C) | 987.5 | 57 |
| Tatiara (DC) | 981.6 | 53 |
| Northern Areas (DC) | 979.2 | 51 |
| Yankalilla (DC) | 977.8 | 50 |
| Naracoorte and Lucindale (DC) | 977.6 | 49 |
| Kingston (DC) (SA) | 976.9 | 49 |
| Mount Remarkable (DC) | 974.2 | 47 |
| Victor Harbor (C) | 962.3 | 38 |
| Gawler (T) | 960.1 | 37 |
| Franklin Harbour (DC) | 959 | 36 |
| Elliston (DC) | 959 | 36 |
| Loxton Waikerie (DC) | 957.8 | 35 |
| Karoonda East Murray (DC) | 956.5 | 34 |
| Port Adelaide Enfield (C) | 952.6 | 32 |
| Yorke Peninsula (DC) | 951.6 | 31 |
| Barunga West (DC) | 950.1 | 30 |
| Port Lincoln (C) | 948.2 | 29 |
| Goyder (DC) | 946.6 | 28 |
| Ceduna (DC) | 943.2 | 26 |
| Wattle Range (DC) | 941.7 | 26 |
| The Coorong (DC) | 938.6 | 23 |
| Flinders Ranges (DC) | 933 | 22 |
| Mount Gambier (C) | 924.1 | 19 |
| Copper Coast (DC) | 923.7 | 19 |
| Renmark Paringa (DC) | 922.6 | 18 |
| Wakefield (DC) | 921 | 18 |
| Mid Murray (DC) | 914.5 | 17 |
| Berri and Barmera (DC) | 906.9 | 14 |
| Unincorporated SA | 904.8 | 13 |
| Salisbury (C) | 903.7 | 13 |
| Murray Bridge (RC) | 891 | 11 |
| Port Pirie City and Dists (M) | 889.4 | 11 |
| Port Augusta (C) | 888.6 | 11 |
| Whyalla (C) | 883 | 10 |
| Coober Pedy (DC) | 868.3 | 9 |
| Playford (C) | 852.4 | 8 |
| Peterborough (DC) | 773.1 | 7 |
| Maralinga Tjarutja (AC) | 643.9 | 5 |
| Anangu Pitjantjatjara (AC) | 496.3 | 1 |
Chart view
Variation within Tea Tree Gully (C)
See the spread of scores across smaller areas within the municipality.
Yatala Vale
1092.2
Percentile 95
Upper Hermitage (part)
1085
Percentile 92
Highbury (SA)
1071.3
Percentile 86
Dernancourt (part)
1061.5
Percentile 80
Fairview Park
1061.3
Percentile 80
Vista
1059
Percentile 79
Banksia Park
1053.4
Percentile 75
Tea Tree Gully
1049.9
Percentile 72
Redwood Park
1046.8
Percentile 70
Greenwith
1045.2
Percentile 69
Golden Grove
1042.4
Percentile 68
Wynn Vale
1038.9
Percentile 65
Surrey Downs
1025.4
Percentile 57
Modbury North
1024.5
Percentile 56
St Agnes (SA)
1024
Percentile 56
Modbury Heights
1019.1
Percentile 53
Hope Valley (SA)
1005
Percentile 45
Ridgehaven
991.4
Percentile 37
Modbury
975.6
Percentile 29
Holden Hill (part)
964.9
Percentile 25
Data table
Variation within Tea Tree Gully (C) table
Download the underlying SEIFA scores and percentiles shown in the current view.
| Area | Score | Percentile |
|---|---|---|
| Yatala Vale | 1092.2 | 95 |
| Upper Hermitage (part) | 1085 | 92 |
| Highbury (SA) | 1071.3 | 86 |
| Dernancourt (part) | 1061.5 | 80 |
| Fairview Park | 1061.3 | 80 |
| Vista | 1059 | 79 |
| Banksia Park | 1053.4 | 75 |
| Tea Tree Gully | 1049.9 | 72 |
| Redwood Park | 1046.8 | 70 |
| Greenwith | 1045.2 | 69 |
| Golden Grove | 1042.4 | 68 |
| Wynn Vale | 1038.9 | 65 |
| Surrey Downs | 1025.4 | 57 |
| Modbury North | 1024.5 | 56 |
| St Agnes (SA) | 1024 | 56 |
| Modbury Heights | 1019.1 | 53 |
| Hope Valley (SA) | 1005 | 45 |
| Ridgehaven | 991.4 | 37 |
| Modbury | 975.6 | 29 |
| Holden Hill (part) | 964.9 | 25 |