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 Blakiston, accounting for 48.3%.

Section overview

Household income quartiles

Blakiston - Households (Enumerated)

This table summarises household income quartiles for Blakiston in 2021 for persons, with comparison against Mount Barker (DC) and change since 2016.

Household income quartiles snapshot

2021 distribution by category for Blakiston, with comparison markers for Mount Barker (DC).

Blakiston
Mount Barker (DC)

Lowest group

2021 count

16

% of total

13.8%

Change from 2016

-

Medium lowest

2021 count

19

% of total

16.4%

Change from 2016

-

Medium highest

2021 count

25

% of total

21.6%

Change from 2016

-

Highest group

2021 count

56

% of total

48.3%

Change from 2016

-

Data table

Household income quartiles for Blakiston. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Mount Barker (DC).

Household income quartiles for Blakiston. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Mount Barker (DC).
Household income quartiles for Blakiston. Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Mount Barker (DC).
Category20212016Change
Count%Mount Barker (DC)%Count%Mount Barker (DC)%Countpp
Lowest group1613.8%19.1%00.0%19.1%--
Medium lowest1916.4%23.1%1010.9%22.9%--
Medium highest2521.6%28.0%2426.1%27.8%--
Highest group5648.3%29.8%5863.0%30.2%--
Total Households116100.0%100.0%92100.0%100.0%--