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City of OnkaparingaCommunity profile

Seaford

Equivalised household income

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Assuming all households were the same size, the 'medium lowest' quartile was the largest income group in Seaford 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 Seaford.

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.

Q:

Derived from the Census question:

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

Equivalised household income quartiles
Seaford - Households (Enumerated)20212016Change
Quartile groupNumber%City of Onkaparinga %Number%City of Onkaparinga %2016 to 2021
Lowest group48528.224.939825.924.1+87
Medium lowest50729.427.848631.727.7+21
Medium highest43825.426.939825.927.6+40
Highest group29217.020.425416.520.7+38
Total Households1,724100.0100.01,538100.0100.0+186
Source: Australian Bureau of Statistics, Census of Population and Housing 2016 and 2021. Compiled and presented by .id (informed decisions).
Please refer to specific data notes for more information
Equivalised household income - Quartile group dollar ranges
Calculated from income data for South AustraliaWeekly income by Census year
Equivalised household income ranges20212016201120062001
Lowest group$0 to $541$0 to $468$0 to $395$0 to $332$0 to $268
Medium lowest$542 to $939$469 to $768$396 to $689$333 to $554$269 to $437
Medium highest$940 to $1,487$769 to $1,226$690 to $1,101$555 to $880$438 to $690
Highest group$1,488 and over$1,227 and over$1,102 and over$881 and over$691 and over

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 Seaford compared to the City of Onkaparinga 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.

Emerging groups

The most significant change in Seaford between 2016 and 2021 was in the lowest quartile which showed an increase of 87 households.

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