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 Trowutta, accounting for 32.4%.

Section overview

Household income quartiles

Trowutta - Households (Enumerated)

This table summarises household income quartiles for Trowutta in 2021 for persons, with comparison against Circular Head (M) and change since 2016.

Household income quartiles snapshot

2021 distribution by category for Trowutta, with comparison markers for Circular Head (M).

Trowutta
Circular Head (M)

Lowest group

2021 count

10

% of total

27.0%

Change from 2016

-

Medium lowest

2021 count

7

% of total

18.9%

Change from 2016

-

Medium highest

2021 count

8

% of total

21.6%

Change from 2016

-

Highest group

2021 count

12

% of total

32.4%

Change from 2016

-

Data table

Household income quartiles for Trowutta. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Circular Head (M).

Household income quartiles for Trowutta. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Circular Head (M).
Household income quartiles for Trowutta. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Circular Head (M).
Category20212016Change
Count%Circular Head (M)%Count%Circular Head (M)%Countpp
Lowest group1027.0%26.9%857.1%24.1%--
Medium lowest718.9%26.2%428.6%26.6%--
Medium highest821.6%26.3%214.3%26.7%--
Highest group1232.4%20.6%--22.6%--
Total Households37100.0%100.0%14100.0%100.0%--