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 Brinsmead, accounting for 35%.

Section overview

Household income quartiles

Brinsmead - Households (Enumerated)

This table summarises household income quartiles for Brinsmead in 2021 for persons, with comparison against Cairns (R) and change since 2016.

Household income quartiles snapshot

2021 distribution by category for Brinsmead, with comparison markers for Cairns (R).

Brinsmead
Cairns (R)

Lowest group

2021 count

266

% of total

15.3%

Change from 2016

-

Medium lowest

2021 count

360

% of total

20.7%

Change from 2016

-

Medium highest

2021 count

506

% of total

29.1%

Change from 2016

-

Highest group

2021 count

609

% of total

35.0%

Change from 2016

-

Data table

Household income quartiles for Brinsmead. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Cairns (R).

Household income quartiles for Brinsmead. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Cairns (R).
Household income quartiles for Brinsmead. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Cairns (R).
Category20212016Change
Count%Cairns (R)%Count%Cairns (R)%Countpp
Lowest group26615.3%25.2%23014.5%25.9%--
Medium lowest36020.7%27.1%32720.6%26.5%--
Medium highest50629.1%26.0%48330.5%26.0%--
Highest group60935.0%21.6%54534.4%21.7%--
Total Households1,741100.0%100.0%1,585100.0%100.0%--