2.5 ▼ -10.7%
Higher than 50% of suburb / locality areas.
- 2011: 2.8
- 2016: 2.6
- 2021: 2.5
Average number of people usually resident per household.
Derby · Suburb / Locality
How families and households are made up across the area.
More people are living alone in Derby than in most similar areas. This trend is part of a broader shift in the community, where one-parent families are now far more common than the national figure.
All suburb / locality areas, 2021. The marker is Derby — higher than 50% of areas.
| Derby | 2.5 |
|---|---|
| 6728, WA | 2.8 |
| Western Australia | 2.5 |
| Australia | 2.5 |
Average household size.
About 34.9% of residents live alone, which is well above the 25.6% national figure. Despite this, the typical home in Derby still holds 2.5 people, matching both the state and national average.
2.5 ▼ -10.7%
Higher than 50% of suburb / locality areas.
Average number of people usually resident per household.
34.9% ▲ +25.3%
Higher than 84% of suburb / locality areas.
Share of households that are a single person living alone.
Derby splits fairly evenly between 1 person (35%) and 2 people (31%), with 3 people at 11%.
Family types and one-parent families.
One-parent families make up 24.2% of the community, a figure far above the 14.1% seen across Australia. Couples with children are the most common family type at 45.9%.
24.2% ▲ +21.5%
Higher than 91% of suburb / locality areas.
Share of people who live in one-parent families.
In Derby, the largest group is Couples with children at 46%, followed by Couples without children (27%) and One-parent families (24%).
Australian Bureau of Statistics. (2021). Family & Households in Derby [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sal/SAL50405/derby/topic/family-households