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 Singleton (WA), accounting for 31.5%.

Section overview

Household income quartiles

Singleton (WA) - Households (Enumerated)

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

Household income quartiles snapshot

2021 distribution by category for Singleton (WA), with comparison markers for Rockingham (C).

Singleton (WA)
Rockingham (C)

Lowest group

2021 count

202

% of total

17.5%

Change from 2016

-

Medium lowest

2021 count

261

% of total

22.6%

Change from 2016

-

Medium highest

2021 count

329

% of total

28.5%

Change from 2016

-

Highest group

2021 count

364

% of total

31.5%

Change from 2016

-

Data table

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

Household income quartiles for Singleton (WA). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Rockingham (C).
Household income quartiles for Singleton (WA). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Rockingham (C).
Category20212016Change
Count%Rockingham (C)%Count%Rockingham (C)%Countpp
Lowest group20217.5%25.9%18418.3%25.6%--
Medium lowest26122.6%26.0%25024.8%25.6%--
Medium highest32928.5%26.6%28428.2%27.0%--
Highest group36431.5%21.5%29028.8%21.9%--
Total Households1,156100.0%100.0%1,008100.0%100.0%--