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 Upper Mount Gravatt, accounting for 26.4%.

Section overview

Household income quartiles

Upper Mount Gravatt - Households (Enumerated)

This table summarises household income quartiles for Upper Mount Gravatt in 2021 for persons, with comparison against Brisbane (C) and change since 2016.

Household income quartiles snapshot

2021 distribution by category for Upper Mount Gravatt, with comparison markers for Brisbane (C).

Upper Mount Gravatt
Brisbane (C)

Lowest group

2021 count

1,004

% of total

26.4%

Change from 2016

-

Medium lowest

2021 count

906

% of total

23.8%

Change from 2016

-

Medium highest

2021 count

980

% of total

25.8%

Change from 2016

-

Highest group

2021 count

915

% of total

24.0%

Change from 2016

-

Data table

Household income quartiles for Upper Mount Gravatt. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Brisbane (C).

Household income quartiles for Upper Mount Gravatt. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Brisbane (C).
Household income quartiles for Upper Mount Gravatt. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Brisbane (C).
Category20212016Change
Count%Brisbane (C)%Count%Brisbane (C)%Countpp
Lowest group1,00426.4%19.1%85628.5%19.7%--
Medium lowest90623.8%21.4%69323.1%20.7%--
Medium highest98025.8%25.2%71423.8%25.1%--
Highest group91524.0%34.4%74024.6%34.5%--
Total Households3,805100.0%100.0%3,003100.0%100.0%--