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In 2011, 49% of households in CAD West contained only one person, compared with 42% in the City of Adelaide, with the most dominant household size being 1 person 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 declined since the 1970s but between 2006 and 2011, the average household size remained stable for the nation as a whole.

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, CAD West's Household Size data should be viewed in conjunction with Household Summary, Age Structure, Dwelling Type, Household Income and Language Spoken at Home.

Derived from the three Census questions:

'Name of each person including visitors who spent the night of Tuesday, 9 August 2011 in this dwelling', and 'Where does the person usually live?', and 'Are there any persons who usually live in this dwelling who were absent on Census Night (Tuesday, 9 August 2011)?'

Family, group and lone person households

Household size
CAD West20112006Change
Number of persons usually residentNumber%City of Adelaide %Number%City of Adelaide %2006 to 2011
1 person52549.142.116335.443.5+362
2 persons31229.138.515032.538.4+162
3 persons13512.611.96413.910.4+71
4 persons787.25.45111.15.7+27
5 persons181.71.6296.31.6-11
6 or more persons30.30.440.90.5-1

Source: Australian Bureau of Statistics, Census of Population and Housing 2006 and 2011. Compiled and presented by .id , the population experts.

Household size - Summary
CAD West20112006Change
DwellingsNumber%City of Adelaide %Number%City of Adelaide %2006 to 2011
Occupied private dwellings1,332----617----+715
Persons in occupied private dwellings2,452----1,442----+1,010
Average household size (persons per dwelling)1.84--1.862.34--1.86-0.50

Source: Australian Bureau of Statistics, Census of Population and Housing 2006 and 2011. Compiled and presented in profile.id by .id , the population experts.

The 'Dwellings' table is enumerated data.

Household size, 2011
Household size, 2011 6 or more persons, City of Adelaide: 0.4% 5 persons, City of Adelaide: 1.6% 4 persons, City of Adelaide: 5.4% 3 persons, City of Adelaide: 11.9% 2 persons, City of Adelaide: 38.5% 1 person, City of Adelaide: 42.1% 6 or more persons, CAD West: 0.3% 5 persons, CAD West: 1.7% 4 persons, CAD West: 7.2% 3 persons, CAD West: 12.6% 2 persons, CAD West: 29.1% 1 person, CAD West: 49.1%
Source: Australian Bureau of Statistics, Census of Population and Housing, 2011 (Enumerated data)
Compiled and presented in profile.id by .id, the population experts.
Change in household size, 2006 to 2011
Change in household size, 2006 to 2011 6 or more persons, CAD West: -1 5 persons, CAD West: -11 4 persons, CAD West: +27 3 persons, CAD West: +71 2 persons, CAD West: +162 1 person, CAD West: +362
Source: Australian Bureau of Statistics, Census of Population and Housing, 2006 and 2011 (Enumerated data)
Compiled and presented in profile.id by .id, the population experts.

Dominant groups

Analysis of the number of persons usually resident in a household in CAD West compared with the City of Adelaide shows that there were a higher proportion of lone person households, and a higher proportion of larger households (those with 4 persons or more). Overall there were 49.1% of lone person households, and 9.2% of larger households, compared with 42.1% and 7.5% respectively for the City of Adelaide.

The major differences in the household size for CAD West and the City of Adelaide were:

  • A larger percentage of households with 1 person usually resident (49.1% compared to 42.1%)
  • A larger percentage of households with 4 persons usually resident (7.2% compared to 5.4%)
  • A smaller percentage of households with 2 persons usually resident (29.1% compared to 38.5%)

Emerging groups

The number of households in CAD West increased by 610 between 2006 and 2011.

The largest changes in the number of persons usually resident in a household in CAD West between 2006 and 2011 were:

  • 1 person (+362 households)
  • 2 persons (+162 households)
  • 3 persons (+71 households)