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 Unley Park, accounting for 56.4%.

Section overview

Household income quartiles

Unley Park - Households (Enumerated)

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

Household income quartiles snapshot

2021 distribution by category for Unley Park, with comparison markers for Unley (C).

Unley Park
Unley (C)

Lowest group

2021 count

52

% of total

10.9%

Change from 2016

-

Medium lowest

2021 count

64

% of total

13.4%

Change from 2016

-

Medium highest

2021 count

93

% of total

19.4%

Change from 2016

-

Highest group

2021 count

270

% of total

56.4%

Change from 2016

-

Data table

Household income quartiles for Unley Park. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Unley (C).

Household income quartiles for Unley Park. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Unley (C).
Household income quartiles for Unley Park. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Unley (C).
Category20212016Change
Count%Unley (C)%Count%Unley (C)%Countpp
Lowest group5210.9%18.6%5211.3%19.6%--
Medium lowest6413.4%19.4%6413.9%18.7%--
Medium highest9319.4%22.7%8819.1%22.2%--
Highest group27056.4%39.2%25755.7%39.5%--
Total Households479100.0%100.0%461100.0%100.0%--