National Growth Areas Alliance (NGAA)
Equivalised household income
Assuming all households were the same size, the 'medium highest' quartile was the largest income group in the National Growth Areas Alliance (NGAA) 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 National Growth Areas Alliance (NGAA).
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.
Derived from the Census question:
'What is the total of all wages/salaries, government benefits, pensions, allowances and other income the person usually receives?'
Family, group and lone person households with stated income
| Equivalised household income quartiles | ||||||||
|---|---|---|---|---|---|---|---|---|
| National Growth Areas Alliance (NGAA) - Households (Enumerated) | 2021 | 2016 | Change | |||||
| Quartile group | Number | % | City of Gosnells % | Number | % | City of Gosnells % | 2016 to 2021 | |
| Lowest group | 389,695 | 24.4 | 28.5 | 305,332 | 23.7 | 27.8 | +84,364 | 32001 |
| Medium lowest | 439,366 | 27.5 | 30.1 | 347,616 | 27.0 | 29.7 | +91,749 | 32002 |
| Medium highest | 445,453 | 27.8 | 25.9 | 363,714 | 28.2 | 26.3 | +81,739 | 32003 |
| Highest group | 325,797 | 20.4 | 15.5 | 273,062 | 21.2 | 16.2 | +52,734 | 32004 |
| Total Households | 1,600,312 | 100.0 | 100.0 | 1,289,725 | 100.0 | 100.0 | +310,586 | |
Source: Australian Bureau of Statistics, Census of Population and Housing (opens a new window) 2016 and 2021. Compiled and presented by .id (opens a new window)(informed decisions).
(Enumerated data)
| Equivalised household income - Quartile group dollar ranges | |||||
|---|---|---|---|---|---|
| Calculated from income data for [theQBMQuartile] | 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 |
Compiled and presented in profile.id by .id (informed decisions).
Compiled and presented in profile.id by .id (informed decisions).
Dominant groups
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 National Growth Areas Alliance (NGAA) compared to the City of Gosnells shows that there was a greater proportion of households in the highest equivalised income quartile, and a lesser proportion in the lowest equivalised income quartile.
Emerging groups
The most significant change in National Growth Areas Alliance (NGAA) between 2016 and 2021 was in the medium lowest quartile which showed an increase of 91,749 households.