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, Streaky Bay (DC)'s Index of Relative Socio-economic Disadvantage (IRSD) score was 1000.3, placing it in the 67th percentile nationally. Within Streaky Bay (DC), scores ranged from Karcultaby (part) to Baird Bay.
View
1000.3
Streaky Bay (DC) IRSD score
67th percentile nationally
1020.9
Highest local score
Baird Bay
977.9
Lowest local score
Karcultaby (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 Streaky Bay (DC)
See the spread of scores across smaller areas within the municipality.
Baird Bay
1020.9
Percentile 54
Calca
1020.9
Percentile 54
Colley
1020.9
Percentile 54
Eba Anchorage
1020.9
Percentile 54
Inkster
1020.9
Percentile 54
Maryvale (SA)
1020.9
Percentile 54
Mortana
1020.9
Percentile 54
Mount Cooper (SA)
1020.9
Percentile 54
Sceale Bay
1020.9
Percentile 54
Tyringa
1020.9
Percentile 54
Westall
1020.9
Percentile 54
Witera
1020.9
Percentile 54
Yanerbie
1020.9
Percentile 54
Streaky Bay
998
Percentile 41
Chandada
997.7
Percentile 41
Chilpenunda
997.7
Percentile 41
Cungena
997.7
Percentile 41
Haslam
997.7
Percentile 41
Kaldoonera
997.7
Percentile 41
Perlubie
997.7
Percentile 41
Petina
997.7
Percentile 41
Piednippie
997.7
Percentile 41
Poochera
997.7
Percentile 41
Wallala
997.7
Percentile 41
Wirrulla
997.7
Percentile 41
Yantanabie
997.7
Percentile 41
Karcultaby (part)
977.9
Percentile 30
Data table
Variation within Streaky Bay (DC) table
Download the underlying SEIFA scores and percentiles shown in the current view.
| Area | Score | Percentile |
|---|---|---|
| Baird Bay | 1020.9 | 54 |
| Calca | 1020.9 | 54 |
| Colley | 1020.9 | 54 |
| Eba Anchorage | 1020.9 | 54 |
| Inkster | 1020.9 | 54 |
| Maryvale (SA) | 1020.9 | 54 |
| Mortana | 1020.9 | 54 |
| Mount Cooper (SA) | 1020.9 | 54 |
| Sceale Bay | 1020.9 | 54 |
| Tyringa | 1020.9 | 54 |
| Westall | 1020.9 | 54 |
| Witera | 1020.9 | 54 |
| Yanerbie | 1020.9 | 54 |
| Streaky Bay | 998 | 41 |
| Chandada | 997.7 | 41 |
| Chilpenunda | 997.7 | 41 |
| Cungena | 997.7 | 41 |
| Haslam | 997.7 | 41 |
| Kaldoonera | 997.7 | 41 |
| Perlubie | 997.7 | 41 |
| Petina | 997.7 | 41 |
| Piednippie | 997.7 | 41 |
| Poochera | 997.7 | 41 |
| Wallala | 997.7 | 41 |
| Wirrulla | 997.7 | 41 |
| Yantanabie | 997.7 | 41 |
| Karcultaby (part) | 977.9 | 30 |