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 Circular Head (M), accounting for 26.9%.
Section overview
Household income quartiles
Circular Head (M) - Households (Enumerated)
This table summarises household income quartiles for Circular Head (M) in 2021 for persons, with comparison against Regional Tas. and change since 2016.
Household income quartiles snapshot
2021 distribution by category for Circular Head (M), with comparison markers for Regional Tas..
Lowest group
2021 count
754
% of total
26.9%
Change from 2016
-
754
26.9%
-
Medium lowest
2021 count
734
% of total
26.2%
Change from 2016
-
734
26.2%
-
Medium highest
2021 count
738
% of total
26.3%
Change from 2016
-
738
26.3%
-
Highest group
2021 count
579
% of total
20.6%
Change from 2016
-
579
20.6%
-
Chart view
Household income quartiles change
Absolute change in category counts between 2016 and 2021.
Lowest group
-
-
Medium lowest
-
-
Medium highest
-
-
Highest group
-
-
Data table
Household income quartiles for Circular Head (M). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Regional Tas..
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional Tas.% | Count | % | Regional Tas.% | Count | pp | |
| Lowest group | 754 | 26.9% | 27.9% | 628 | 24.1% | 27.4% | - | - |
| Medium lowest | 734 | 26.2% | 26.7% | 692 | 26.6% | 26.7% | - | - |
| Medium highest | 738 | 26.3% | 24.2% | 695 | 26.7% | 24.5% | - | - |
| Highest group | 579 | 20.6% | 21.2% | 588 | 22.6% | 21.3% | - | - |
| Total Households | 2,805 | 100.0% | 100.0% | 2,603 | 100.0% | 100.0% | - | - |