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Shire of Serpentine JarrahdaleCommunity profile

Shire of Serpentine Jarrahdale

Household size

In 2021, 15% of households in the Shire of Serpentine Jarrahdale contained only one person, compared with 24.9% in Greater Perth, with the most dominant household size being 2 persons per household.

The size of households in general follows the life-cycle of families. Households are usually small at the stage of relationship formation (early marriage), and then increase in size with the advent of children. They later reduce in size again as these children reach adulthood and leave home. Household size can also be influenced by a lack (or abundance) of affordable housing. Overseas migrants and indigenous persons often have a tradition of living with extended family members which significantly affects household size.

Household size in Australia has generally declined since the 1970s, but the rate of decline has slowed in recent years.

An increasing household size in an area may indicate a lack of affordable housing opportunities for young people, an increase in the birth rate or an increase in family formation in the area. A declining household size may indicate children leaving the area when they leave home, an increase in retirees settling in the area, or an attraction of young singles and couples to the area.

For greater insight, the Shire of Serpentine Jarrahdale's Household Size data should be viewed in conjunction with Household Summary, Age Structure, Dwelling Type, Household Income and Language Spoken at Home.

Q:

Derived from the three Census questions:

'Name of each person including visitors who spent the night of Tuesday, 10 August 2021 in this dwelling', and 'Where does the person usually live?', and 'Name of each person who usually lives in this dwelling but was away on Tuesday, 10 August 2021.'

Household size
Shire of Serpentine Jarrahdale - Households (Enumerated)20212001Change
Number of persons usually residentNumber%Greater Perth %Number%Greater Perth %2001 to 2021
1 person1,54215.124.946313.024.7+1,079
2 persons3,20531.432.91,21334.133.3+1,992
3 persons1,81117.716.461117.215.9+1,200
4 persons2,05820.216.570619.816.1+1,352
5 persons1,0029.86.436710.37.0+635
6 or more persons5925.82.92005.62.8+392
Total classifiable households10,210100.0100.03,560100.0100.0+6,650
Source: Australian Bureau of Statistics, Census of Population and Housing 2001 and 2021. Compiled and presented by .id (informed decisions).
Please refer to specific data notes for more information
Household size - Summary
Shire of Serpentine Jarrahdale - Enumerated20212001Change
DwellingsNumber%Greater Perth %Number%Greater Perth %2001 to 2021
Occupied private dwellings10,555----3,657----+6,898
Persons in occupied private dwellings30,651----10,877----+19,774
Average household size (persons per dwelling)2.90--2.502.97--2.55-0.07
Source: Australian Bureau of Statistics, Census of Population and Housing 2001 and 2021. Compiled and presented in profile.id by .id (informed decisions).
Please refer to specific data notes for more information

The 'Dwellings' table is enumerated data.

Dominant groups

Analysis of the number of persons usually resident in a household in the Shire of Serpentine Jarrahdale compared with Greater Perth shows that there were a lower proportion of lone person households, and a higher proportion of larger households (those with 4 persons or more). Overall there were 15.1% of lone person households, and 35.8% of larger households, compared with 24.9% and 25.7% respectively for Greater Perth.

The major differences in the household size for the Shire of Serpentine Jarrahdale and Greater Perth were:

  • A larger percentage of households with 4 persons usually resident (20.2% compared to 16.5%)
  • A larger percentage of households with 5 persons usually resident (9.8% compared to 6.4%)
  • A larger percentage of households with 6 or more persons usually resident (5.8% compared to 2.9%)
  • A smaller percentage of households with 1 person usually resident (15.1% compared to 24.9%)

Emerging groups

The number of households in Shire of Serpentine Jarrahdale increased by 6,650 between 2001 and 2021.

The largest changes in the number of persons usually resident in a household in the Shire of Serpentine Jarrahdale between 2001 and 2021 were:

  • 2 persons (+1,992 households)
  • 4 persons (+1,352 households)
  • 3 persons (+1,200 households)
  • 1 person (+1,079 households)

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