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 highest household income quartile held the largest share among households with income in Wickham (WA), accounting for 60.6%.

Section overview

Household income quartiles

Wickham (WA) - Households (Enumerated)

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

Household income quartiles snapshot

2021 distribution by category for Wickham (WA), with comparison markers for Karratha (C).

Wickham (WA)
Karratha (C)

Lowest group

2021 count

14

% of total

3.1%

Change from 2016

-

Medium lowest

2021 count

44

% of total

9.7%

Change from 2016

-

Medium highest

2021 count

120

% of total

26.5%

Change from 2016

-

Highest group

2021 count

274

% of total

60.6%

Change from 2016

-

Data table

Household income quartiles for Wickham (WA). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Karratha (C).

Household income quartiles for Wickham (WA). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Karratha (C).
Household income quartiles for Wickham (WA). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Karratha (C).
Category20212016Change
Count%Karratha (C)%Count%Karratha (C)%Countpp
Lowest group143.1%7.3%325.5%8.5%--
Medium lowest449.7%13.4%427.2%13.0%--
Medium highest12026.5%26.3%18832.4%28.6%--
Highest group27460.6%53.1%31954.9%50.0%--
Total Households452100.0%100.0%581100.0%100.0%--