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South West Overlay

Household income quartiles

In South West Overlay, the 'lowest' quartile was the largest group in 2011, comprising 36% of households with income.

Households form the common 'economic unit' in our society. Household Income is one of the most important indicators of socio-economic status. With other data sources, such as Qualifications and Occupation, it helps to reveal South West Overlay's socio-economic status and economic opportunities. Household income levels are not comparable over time because of the influences of economic change such as wage level fluctuations and inflation. The income quartile method is a powerful and objective way of looking at income data and in particular, how it is changing.

A detailed explanation of how Household Income quartiles are calculated and interpreted is available in specific data notes.

Derived from the Census question:

'What is the total of all wages/salaries, government benefits, pensions, allowances and other income the person usually receives?'

Households

Household income quartiles
South West Overlay20112006Change
Quartile groupNumber%City of Adelaide %Number%City of Adelaide %2006 to 2011
Lowest group37435.530.229935.527.0+75
Medium lowest20219.216.916719.817.7+35
Medium highest21520.421.315117.919.4+64
Highest group26124.831.622626.835.9+35

Source: Australian Bureau of Statistics, Census of Population and Housing 2006 and 2011. Compiled and presented by .id , the population experts.

Household income - Quartile group dollar ranges
Calculated from income data for South Australia Weekly income by Census year
Household income ranges
2011
2006
2001
1996
1991
Lowest group $0 to $554 $0 to $488 $0 to $375 $0 to $294 $0 to $278
Medium lowest $555 to $1,042 $489 to $885 $376 to $675 $295 to $552 $279 to $505
Medium highest $1,043 to $1,869 $886 to $1,466 $676 to $1,157 $553 to $933 $506 to $848
Highest group $1,870 and over $1,467 and over $1,158 and over $934 and over $849 and over

Household income quartiles, 2011
Household income quartiles, 2011 Highest group, City of Adelaide: 31.6% Medium highest, City of Adelaide: 21.3% Medium lowest, City of Adelaide: 16.9% Lowest group, City of Adelaide: 30.2% Highest group, South West Overlay: 24.8% Medium highest, South West Overlay: 20.4% Medium lowest, South West Overlay: 19.2% Lowest group, South West Overlay: 35.5%
Source: Australian Bureau of Statistics, Census of Population and Housing, 2011 (Enumerated data)
Compiled and presented in profile.id by .id, the population experts.
Change in household income quartile, 2006 to 2011
Change in household income quartile, 2006 to 2011 Highest group, South West Overlay: +35 Medium highest, South West Overlay: +64 Medium lowest, South West Overlay: +35 Lowest group, South West Overlay: +75
Source: Australian Bureau of Statistics, Census of Population and Housing, 2006 and 2011 (Enumerated data)
Compiled and presented in profile.id by .id, the population experts.

Dominant groups

Income quartiles allow us to compare relative income-earning capabilities across time. Analysis of the distribution of households by income quartile in South West Overlay compared to the City of Adelaide shows that there was lesser proportion of households in the highest income quartile and a greater proportion in the lowest income quartile.

Emerging groups

The most significant change in South West Overlay between 2006 and 2011 was in the lowest quartile which showed an increase of 75 households.