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 medium-low household income quartile held the largest share among households with income in Logan (C), accounting for 27.5%.

Section overview

Household income quartiles

Logan (C) - Households (Enumerated)

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

Household income quartiles snapshot

2021 distribution by category for Logan (C), with comparison markers for Greater Brisbane.

Logan (C)
Greater Brisbane

Lowest group

2021 count

24,877

% of total

23.8%

Change from 2016

-

Medium lowest

2021 count

28,764

% of total

27.5%

Change from 2016

-

Medium highest

2021 count

28,521

% of total

27.3%

Change from 2016

-

Highest group

2021 count

22,274

% of total

21.3%

Change from 2016

-

Data table

Household income quartiles for Logan (C). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Greater Brisbane.

Household income quartiles for Logan (C). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Greater Brisbane.
Household income quartiles for Logan (C). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Greater Brisbane.
Category20212016Change
Count%Greater Brisbane%Count%Greater Brisbane%Countpp
Lowest group24,87723.8%21.7%20,12223.0%21.7%--
Medium lowest28,76427.5%23.7%23,22626.5%23.3%--
Medium highest28,52127.3%25.7%24,40427.8%25.8%--
Highest group22,27421.3%28.8%19,90922.7%29.2%--
Total Households104,436100.0%100.0%87,661100.0%100.0%--