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 Cranbrook (WA), accounting for 43.3%.

Section overview

Household income quartiles

Cranbrook (WA) - Households (Enumerated)

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

Household income quartiles snapshot

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

Cranbrook (WA)
Cranbrook (S)

Lowest group

2021 count

68

% of total

43.3%

Change from 2016

-

Medium lowest

2021 count

48

% of total

30.6%

Change from 2016

-

Medium highest

2021 count

22

% of total

14.0%

Change from 2016

-

Highest group

2021 count

19

% of total

12.1%

Change from 2016

-

Data table

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

Household income quartiles for Cranbrook (WA). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Cranbrook (S).
Household income quartiles for Cranbrook (WA). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Cranbrook (S).
Category20212016Change
Count%Cranbrook (S)%Count%Cranbrook (S)%Countpp
Lowest group6843.3%32.9%7444.6%38.0%--
Medium lowest4830.6%30.9%4627.7%32.6%--
Medium highest2214.0%20.7%3118.7%19.3%--
Highest group1912.1%15.6%159.0%10.1%--
Total Households157100.0%100.0%166100.0%100.0%--