Killarney Heights
Household size
In 2021, 13% of households in Killarney Heights contained only one person, compared with 22.3% in Northern Beaches Council area, with the most dominant household size being 4 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, Killarney Heights'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, 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.'
Family, group and lone person households
| Household size | ||||||||
|---|---|---|---|---|---|---|---|---|
| Killarney Heights - Households (Enumerated) | 2021 | 2006 | Change | |||||
| Number of persons usually resident | Number | % | Northern Beaches Council area % | Number | % | Northern Beaches Council area % | 2006 to 2021 | |
| 1 person | 179 | 12.8 | 22.3 | 154 | 11.6 | 23.2 | +24 | 20001 |
| 2 persons | 358 | 25.6 | 32.1 | 411 | 30.7 | 33.9 | -53 | 20002 |
| 3 persons | 222 | 15.8 | 15.9 | 218 | 16.3 | 15.9 | +4 | 20003 |
| 4 persons | 418 | 29.8 | 19.4 | 368 | 27.5 | 17.4 | +49 | 20004 |
| 5 persons | 168 | 12.0 | 7.5 | 148 | 11.1 | 7.1 | +19 | 20005 |
| 6 or more persons | 56 | 4.0 | 2.8 | 37 | 2.8 | 2.5 | +18 | 20006 |
| Total classifiable households | 1,401 | 100.0 | 100.0 | 1,339 | 100.0 | 100.0 | +62 | |
Source: Australian Bureau of Statistics, Census of Population and Housing (opens a new window) 2006 and 2021. Compiled and presented by .id (opens a new window)(informed decisions).
| Household size - Summary | ||||||||
|---|---|---|---|---|---|---|---|---|
| Killarney Heights - Enumerated | 2021 | 2006 | Change | |||||
| Dwellings | Number | % | Northern Beaches Council area % | Number | % | Northern Beaches Council area % | 2006 to 2021 | |
| Occupied private dwellings | 1,424 | -- | -- | 2002 | 1,368 | -- | -- | +56 |
| Persons in occupied private dwellings | 4,485 | -- | -- | 2003 | 4,163 | -- | -- | +322 |
| Average household size (persons per dwelling) | 3.15 | -- | 2.64 | 2004.00 | 3.04 | -- | 2.55 | +0.11 |
Source: Australian Bureau of Statistics, Census of Population and Housing(opens a new window) 2006 and 2021. Compiled and presented in profile.id by .id (opens a new window)(informed decisions).
The 'Dwellings' table is enumerated data.
Compiled and presented in profile.id by .id (informed decisions).
Compiled and presented in profile.id by .id (informed decisions).
Dominant groups
Analysis of the number of persons usually resident in a household in Killarney Heights compared with Northern Beaches Council area 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 12.8% of lone person households, and 45.8% of larger households, compared with 22.3% and 29.7% respectively for Northern Beaches Council area.
The major differences in the household size for Killarney Heights and Northern Beaches Council area were:
- A larger percentage of households with 4 persons usually resident (29.8% compared to 19.4%)
- A larger percentage of households with 5 persons usually resident (12.0% compared to 7.5%)
- A smaller percentage of households with 1 person usually resident (12.8% compared to 22.3%)
- A smaller percentage of households with 2 persons usually resident (25.6% compared to 32.1%)
Emerging groups
The number of households in Killarney Heights increased by 62 between 2006 and 2021.
The largest changes in the number of persons usually resident in a household in Killarney Heights between 2006 and 2021 were:
- 2 persons (-53 households)
- 4 persons (+49 households)