St Marys · Sub-region (SA3)

Family & Households in St Marys

How families and households are made up across the area.

Fewer people are sharing each home in St Marys than in 2011, though households remain larger than in most other areas. The area is now home to 2.8 people per dwelling, a figure that sits slightly above the national average. This shift comes as the number of people living alone has risen to 20.8%.

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📍 St Marys, Sub-region (SA3)

Where St Marys sits — Average household size

2.8 ▼ -6.7%
  • 1.0: 1 area
  • 1.1: 0 areas
  • 1.2: 0 areas
  • 1.3: 0 areas
  • 1.4: 0 areas
  • 1.5: 1 area
  • 1.6: 0 areas
  • 1.7: 1 area
  • 1.8: 2 areas
  • 1.9: 4 areas
  • 2.0: 3 areas
  • 2.1: 7 areas
  • 2.2: 17 areas
  • 2.3: 60 areas
  • 2.4: 55 areas
  • 2.5: 57 areas
  • 2.6: 43 areas
  • 2.7: 19 areas
  • 2.8: 27 areas
  • 2.9: 16 areas
  • 3.0: 13 areas
  • 3.1: 6 areas
  • 3.2: 5 areas
  • 3.3: 2 areas
  • 3.4: 1 area
  • 3.5: 1 area
  • 3.6: 0 areas
  • 3.7: 0 areas
  • 3.8: 1 area
  • 3.9: 0 areas
  • 4.0: 1 area

All sub-region (sa3) areas, 2021. The marker is St Marys — higher than 86% of areas.

Average household size compared with the state and national average
St Marys2.8
Greater Sydney 2.7
New South Wales 2.6
Australia 2.5

Households

Average household size.

Typical homes are larger than in most other areas, with 29.3% of households containing two people and 17.4% containing four. Only 20.8% of people live alone, which is well below the national figure of 25.6%.

2.8 ▼ -6.7%

Higher than 86% of sub-region (sa3) areas.

  • 2011: 3.0
  • 2016: 2.9
  • 2021: 2.8

Average number of people usually resident per household.

20.8% ▲ +17.0%

Lower than 79% of sub-region (sa3) areas.

  • 2011: 17.8%
  • 2016: 18.5%
  • 2021: 20.8%

Share of households that are a single person living alone.

Household size

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In St Marys, the largest group is 2 people at 29%, followed by 1 person (21%) and 3 people (19%).

Families

Family types and one-parent families.

One-parent families make up 19.5% of the total, a figure that is well above the New South Wales average of 14%. This is among the highest rates for this type of family across similar areas.

19.5% ▲ +1.9%

Higher than 90% of sub-region (sa3) areas.

  • 2011: 19.1%
  • 2016: 19.4%
  • 2021: 19.5%

Share of people who live in one-parent families.

Family composition

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In St Marys, Couples with children is the majority at 60%; One-parent families is next at 19%.

Sources

  • Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).

More for St Marys

Cite this page

Australian Bureau of Statistics. (2021). Family & Households in St Marys [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sa3/12405/st-marys/topic/family-households