Income

Household income quartiles

About this topic

Household income quartiles group households into four evenly sized income ranges so relative income position can be compared across places and across Census years. They provide a distribution view of household income rather than a simple count in fixed dollar brackets.

This topic is useful because raw household income amounts are influenced by inflation and broader economic shifts. Quartiles make it easier to see whether an area's households are concentrated toward lower, middle, or higher income positions over time.

Interpretation notes

  • This is a derived distribution of total household income, so each quartile shows relative position rather than a fixed income bracket.
  • It is useful for over-time comparison because quartile groupings are less distorted by inflation than raw dollar bands.

Key insight

In 2021, the lowest household income quartile held the largest share among households with income in Coorow (S), accounting for 42%.

Section overview

Household income quartiles

Coorow (S) - Households (Enumerated)

This table summarises household income quartiles for Coorow (S) in 2021 for persons, with comparison against Regional WA and change since 2016.

Household income quartiles snapshot

2021 distribution by category for Coorow (S), with comparison markers for Regional WA.

Coorow (S)
Regional WA

Lowest group

2021 count

162

% of total

42.0%

Change from 2016

-

Medium lowest

2021 count

109

% of total

28.2%

Change from 2016

-

Medium highest

2021 count

68

% of total

17.6%

Change from 2016

-

Highest group

2021 count

47

% of total

12.2%

Change from 2016

-

Data table

Household income quartiles for Coorow (S). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Regional WA.

Household income quartiles for Coorow (S). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Regional WA.
Household income quartiles for Coorow (S). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Regional WA.
Category20212016Change
Count%Regional WA%Count%Regional WA%Countpp
Lowest group16242.0%29.0%16242.6%29.1%--
Medium lowest10928.2%25.8%9926.1%25.9%--
Medium highest6817.6%24.5%7419.5%24.3%--
Highest group4712.2%20.7%4511.8%20.7%--
Total Households386100.0%100.0%380100.0%100.0%--