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 Myrtle Bank (SA), accounting for 36.6%.

Section overview

Household income quartiles

Myrtle Bank (SA) - Households (Enumerated)

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

Household income quartiles snapshot

2021 distribution by category for Myrtle Bank (SA), with comparison markers for Unley (C).

Myrtle Bank (SA)
Unley (C)

Lowest group

2021 count

252

% of total

23.2%

Change from 2016

-

Medium lowest

2021 count

234

% of total

21.5%

Change from 2016

-

Medium highest

2021 count

202

% of total

18.6%

Change from 2016

-

Highest group

2021 count

398

% of total

36.6%

Change from 2016

-

Data table

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

Household income quartiles for Myrtle Bank (SA). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Unley (C).
Household income quartiles for Myrtle Bank (SA). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Unley (C).
Category20212016Change
Count%Unley (C)%Count%Unley (C)%Countpp
Lowest group25223.2%18.6%20220.8%19.6%--
Medium lowest23421.5%19.4%21021.6%18.7%--
Medium highest20218.6%22.7%19219.8%22.2%--
Highest group39836.6%39.2%36837.9%39.5%--
Total Households1,086100.0%100.0%972100.0%100.0%--