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City of Joondalup

Life-stages - Household income quartiles

In the City of Joondalup, 41.9% of children aged 0 to 4 years in households with income were in the 'highest' quartile.

Households form the common 'economic unit' in our society. The City of Joondalup's Household Income is one of the most important indicators of socio-economic status. When related to age, this shows the household income of the household in which the individual of that age group was counted.

This helps to reveal the socio-economic opportunities available to people of a particular age group, and the resources available to them. It can answer questions such as whether the wealth of an area is being shared equally among all ages, or particular groups, eg. children or retirees, have access to significantly higher or lower incomes than the general population.

Note that, particularly for children, this does not mean that the person in the age group actually receives the income, just that they are in a household with that income.

The incomes presented on this page are in quartiles, which are defined as four groups containing an equal number of households across Western Australia. They may not contain an equal number of persons in each group, and in fact, more people are generally counted in households in the highest income quartile because income is correlated with household size. However, using income quartiles effectively adjusts for inflation, allowing changes in income for the chosen life stage to be benchmarked to the state, the wider population, and shows change over time. 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?'

Children aged 0 to 4 years, counted in private dwellings

Household income quartiles
City of Joondalup - 0 to 4 years20112006Change
Quartile groupNumber%Western AustraliaNumber%Western Australia2006 to 2011
Lowest group4265.312.24395.910.9-14
Medium lowest1,31816.423.11,46919.725.7-151
Medium highest2,91236.332.42,92939.234.1-18
Highest group3,36341.932.32,62835.229.3+734

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 Western Australia Weekly income by Census year
Household income ranges
2011
2006
Lowest group $0 to $693 $0 to $565
Medium lowest $694 to $1,405 $566 to $1,062
Medium highest $1,406 to $2,507 $1,063 to $1,774
Highest group $2,508 and over $1,775 and over

Household income quartiles, 2011
Household income quartiles, 2011 Highest group, Western Australia: 32.3% Medium highest, Western Australia: 32.4% Medium lowest, Western Australia: 23.1% Lowest group, Western Australia: 12.2% Highest group, City of Joondalup: 41.9% Medium highest, City of Joondalup: 36.3% Medium lowest, City of Joondalup: 16.4% Lowest group, City of Joondalup: 5.3%
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, City of Joondalup: +734 Medium highest, City of Joondalup: -18 Medium lowest, City of Joondalup: -151 Lowest group, City of Joondalup: -14
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 children aged 0 to 4 years by households income quartile in City of Joondalup compared to Western Australia shows that there was greater proportion of children aged 0 to 4 years in the highest income quartile, and a lesser proportion in the lowest income quartile.

Emerging groups

The most significant change in City of Joondalup between 2006 and 2011 for children aged 0 to 4 years was in the highest quartile which showed an increase of 734 persons.

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