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 North Sydney (A), accounting for 43.1%.
Section overview
Household income quartiles
North Sydney (A) - Households (Enumerated)
This table summarises household income quartiles for North Sydney (A) in 2021 for persons, with comparison against Greater Sydney and change since 2016.
Household income quartiles snapshot
2021 distribution by category for North Sydney (A), with comparison markers for Greater Sydney.
Lowest group
2021 count
4,336
% of total
14.0%
Change from 2016
-
4,336
14.0%
-
Medium lowest
2021 count
5,838
% of total
18.8%
Change from 2016
-
5,838
18.8%
-
Medium highest
2021 count
7,520
% of total
24.2%
Change from 2016
-
7,520
24.2%
-
Highest group
2021 count
13,387
% of total
43.1%
Change from 2016
-
13,387
43.1%
-
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 North Sydney (A). Household income quartiles. 2021 and 2016 counts, percentages, and change compared with Greater Sydney.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Greater Sydney% | Count | % | Greater Sydney% | Count | pp | |
| Lowest group | 4,336 | 14.0% | 21.2% | 3,483 | 12.6% | 20.9% | - | - |
| Medium lowest | 5,838 | 18.8% | 23.1% | 4,295 | 15.6% | 22.4% | - | - |
| Medium highest | 7,520 | 24.2% | 25.7% | 7,321 | 26.5% | 26.1% | - | - |
| Highest group | 13,387 | 43.1% | 30.0% | 12,488 | 45.3% | 30.6% | - | - |
| Total Households | 31,081 | 100.0% | 100.0% | 27,587 | 100.0% | 100.0% | - | - |