Households
Household size
About this topic
Household size shows how many people live in each household. It is a basic but important measure of family life, dwelling use, and the way people share housing.
This topic helps indicate demand for different dwelling sizes and can reflect life-cycle patterns, cultural norms, and affordability pressures. It is best read with household type, age structure, and dwelling type, because changes in household size can happen for very different reasons.
Interpretation notes
- This counts the number of people usually resident in the dwelling, so it describes shared living arrangements rather than dwelling size.
- Household size should be read with bedrooms or dwelling structure before drawing conclusions about crowding or housing suitability.
Key insight
In 2021, 2 persons was the most common household size among households in St Marys (SA), accounting for 32.5% (404 households). This share was lower than Mitcham (C) (33.3%). Since 2016, the biggest change was in 1 person, which increased by 68 households and 1.5 percentage points.
Section overview
Household size
St Marys (SA) - Households (Enumerated)
This table summarises household size for St Marys (SA) in 2021 for persons, with comparison against Mitcham (C) and change since 2016.
Household size snapshot
2021 distribution by category for St Marys (SA), with comparison markers for Mitcham (C).
1 person
2021 count
392
% of total
31.5%
Change from 2016
+1.5pp
392
31.5%
+1.5pp
2 persons
2021 count
404
% of total
32.5%
Change from 2016
+0.3pp
404
32.5%
+0.3pp
3 persons
2021 count
203
% of total
16.3%
Change from 2016
+0.8pp
203
16.3%
+0.8pp
4 persons
2021 count
167
% of total
13.4%
Change from 2016
-0.8pp
167
13.4%
-0.8pp
5 persons
2021 count
58
% of total
4.7%
Change from 2016
-0.9pp
58
4.7%
-0.9pp
6 or more persons
2021 count
27
% of total
2.2%
Change from 2016
-0.9pp
27
2.2%
-0.9pp
Chart view
Household size change
Absolute change in category counts between 2016 and 2021.
1 person
+68
+1.5pp
2 persons
+56
+0.3pp
3 persons
+36
+0.8pp
4 persons
+14
-0.8pp
5 persons
-3
-0.9pp
6 or more persons
-7
-0.9pp
Data table
Household size for St Marys (SA). Household size. 2021 and 2016 counts, percentages, and change compared with Mitcham (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Mitcham (C)% | Count | % | Mitcham (C)% | Count | pp | |
| 1 person | 392 | 31.5% | 23.6% | 324 | 30.0% | 23.9% | +68 | +1.5pp |
| 2 persons | 404 | 32.5% | 33.3% | 348 | 32.2% | 33.4% | +56 | +0.3pp |
| 3 persons | 203 | 16.3% | 15.9% | 167 | 15.5% | 15.5% | +36 | +0.8pp |
| 4 persons | 167 | 13.4% | 19.0% | 153 | 14.2% | 18.7% | +14 | -0.8pp |
| 5 persons | 58 | 4.7% | 6.4% | 61 | 5.6% | 6.5% | -3 | -0.9pp |
| 6 or more persons | 27 | 2.2% | 1.9% | 34 | 3.1% | 1.9% | -7 | -0.9pp |
| Total classifiable households | 1,244 | 100.0% | 100.0% | 1,080 | 100.0% | 100.0% | +164 | 0.0pp |