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LEARN MORE ABOUT .idAssuming all households were the same size, the 'medium lowest' quartile was the largest income group in the City of Rockingham in 2021.
While Household Income is a useful measure, it is difficult to tell if changes over time and between geographic areas are due to actual changes in income levels, or due to changes in household size and composition. For example, an increase in lower income households could be due to job losses in key economic sectors, or simply due to decreasing household size as adult children leave home.
Equivalised Household Income puts all households on an equal footing independent of household size and composition to enable a true comparison between areas and over time. It is an indicator of the income resource available to a household of standard size and is the best measure of the changing economic fortunes of households living in the City of Rockingham .
A detailed explanation of how Equivalised Household Income quartiles are calculated and interpreted is available in specific data notes.
Learn more about the characteristics of low-income households here.
'What is the total of all wages/salaries, government benefits, pensions, allowances and other income the person usually receives?'
Equivalised household income quartiles | |||||||
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City of Rockingham - Households (Enumerated) | 2021 | 2011 | Change | ||||
Quartile group | Number | % | Western Australia % | Number | % | Western Australia % | 2011 to 2021 |
Lowest group | 11,398 | 26.6 | 23.9 | 8,043 | 25.9 | 21.5 | +3,355 |
Medium lowest | 11,562 | 27.0 | 23.6 | 8,239 | 26.6 | 21.7 | +3,322 |
Medium highest | 11,268 | 26.3 | 25.3 | 8,129 | 26.2 | 25.6 | +3,138 |
Highest group | 8,544 | 20.0 | 27.1 | 6,585 | 21.2 | 31.2 | +1,959 |
Total Households | 42,774 | 100.0 | 100.0 | 30,999 | 100.0 | 100.0 | +11,775 |
Equivalised household income - Quartile group dollar ranges | |||||
---|---|---|---|---|---|
Calculated from income data for Australia | Weekly income by Census year | ||||
Equivalised household income ranges | 2021 | 2016 | 2011 | 2006 | 2001 |
Lowest group | $0 to $598 | $0 to $497 | $0 to $432 | $0 to $353 | $0 to $282 |
Medium lowest | $599 to $1,069 | $498 to $877 | $433 to $763 | $354 to $607 | $283 to $482 |
Medium highest | $1,070 to $1,706 | $878 to $1,420 | $764 to $1,230 | $608 to $982 | $483 to $773 |
Highest group | $1,707 and over | $1,421 and over | $1,231 and over | $983 and over | $774 and over |
Equivalised income quartiles allow us to compare relative income-earning capabilities across time. Because the data is equivalised, households of different size and composition are placed on an equal footing.
Analysis of the distribution of households by income quartile in the City of Rockingham compared to Western Australia shows that there was a lesser proportion of households in the highest equivalised income quartile, and a greater proportion in the lowest equivalised income quartile.
The most significant change in City of Rockingham between 2011 and 2021 was in the lowest quartile which showed an increase of 3,355 households.
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