Shire of Serpentine JarrahdaleCommunity profile
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Shire of Serpentine Jarrahdale

Equivalised household income

Assuming all households were the same size, the 'medium highest' quartile was the largest income group in the Shire of Serpentine Jarrahdale in 2011.

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 Shire of Serpentine Jarrahdale.

A detailed explanation of how Equivalised 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?'

Family, group and lone person households

Equivalised household income quartiles
Shire of Serpentine Jarrahdale - Households (Enumerated)20112006Change
Quartile groupNumber%Greater Perth %Number%Greater Perth %2006 to 2011
Lowest group1,00421.123.973120.824.2+273
Medium lowest1,30627.524.791926.124.8+387
Medium highest1,33728.125.699128.125.3+347
Highest group1,11023.325.888025.025.7+230

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

Equivalised household income - Quartile group dollar ranges
Calculated from income data for Western Australia Weekly income by Census year
Equivalised household income ranges
2011
2006
2001
Lowest group $0 to $485 $0 to $374 $0 to $285
Medium lowest $486 to $878 $375 to $654 $286 to $487
Medium highest $879 to $1,383 $655 to $1,039 $488 to $766
Highest group $1,384 and over $1,040 and over $767 and over

Equivalised household income quartiles, 2011
Equivalised household income quartiles, 2011 Highest group, Greater Perth: 25.8% Medium highest, Greater Perth: 25.6% Medium lowest, Greater Perth: 24.7% Lowest group, Greater Perth: 23.9% Highest group, Shire of Serpentine Jarrahdale: 23.3% Medium highest, Shire of Serpentine Jarrahdale: 28.1% Medium lowest, Shire of Serpentine Jarrahdale: 27.5% Lowest group, Shire of Serpentine Jarrahdale: 21.1%
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 equivalised household income quartiles, 2006 to 2011
Change in equivalised household income quartiles, 2006 to 2011 Highest group, Shire of Serpentine Jarrahdale: +230 Medium highest, Shire of Serpentine Jarrahdale: +347 Medium lowest, Shire of Serpentine Jarrahdale: +387 Lowest group, Shire of Serpentine Jarrahdale: +273
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

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 Shire of Serpentine Jarrahdale compared to Greater Perth shows that there was a lesser proportion of households in the highest equivalised income quartile, as well as a lesser proportion in the lowest equivalised income quartile.

Emerging groups

The most significant change in Shire of Serpentine Jarrahdale between 2006 and 2011 was in the medium lowest quartile which showed an increase of 387 households.

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