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 Kulin (S), accounting for 27%.

Section overview

Household income quartiles

Kulin (S) - Households (Enumerated)

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

Household income quartiles snapshot

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

Kulin (S)
Regional WA

Lowest group

2021 count

62

% of total

27.0%

Change from 2016

-

Medium lowest

2021 count

51

% of total

22.2%

Change from 2016

-

Medium highest

2021 count

58

% of total

25.2%

Change from 2016

-

Highest group

2021 count

59

% of total

25.7%

Change from 2016

-

Data table

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

Household income quartiles for Kulin (S). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Regional WA.
Household income quartiles for Kulin (S). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Regional WA.
Category20212016Change
Count%Regional WA%Count%Regional WA%Countpp
Lowest group6227.0%29.0%8029.7%29.1%--
Medium lowest5122.2%25.8%8230.5%25.9%--
Medium highest5825.2%24.5%6724.9%24.3%--
Highest group5925.7%20.7%4014.9%20.7%--
Total Households230100.0%100.0%269100.0%100.0%--