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 Blackwood (SA), accounting for 34.7% (601 households). This share was higher than Mitcham (C) (33.3%). Since 2016, the biggest change was in 1 person, which increased by 23 households and 0.3 percentage points.
Section overview
Household size
Blackwood (SA) - Households (Enumerated)
This table summarises household size for Blackwood (SA) in 2021 for persons, with comparison against Mitcham (C) and change since 2016.
Household size snapshot
2021 distribution by category for Blackwood (SA), with comparison markers for Mitcham (C).
1 person
2021 count
492
% of total
28.4%
Change from 2016
+0.3pp
492
28.4%
+0.3pp
2 persons
2021 count
601
% of total
34.7%
Change from 2016
-0.9pp
601
34.7%
-0.9pp
3 persons
2021 count
239
% of total
13.8%
Change from 2016
+0.7pp
239
13.8%
+0.7pp
4 persons
2021 count
294
% of total
17.0%
Change from 2016
+0.5pp
294
17.0%
+0.5pp
5 persons
2021 count
75
% of total
4.3%
Change from 2016
-0.8pp
75
4.3%
-0.8pp
6 or more persons
2021 count
25
% of total
1.4%
Change from 2016
0.0pp
25
1.4%
0.0pp
Chart view
Household size change
Absolute change in category counts between 2016 and 2021.
1 person
+23
+0.3pp
2 persons
+6
-0.9pp
3 persons
+20
+0.7pp
4 persons
+18
+0.5pp
5 persons
-11
-0.8pp
6 or more persons
+2
0.0pp
Data table
Household size for Blackwood (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 | 492 | 28.4% | 23.6% | 469 | 28.1% | 23.9% | +23 | +0.3pp |
| 2 persons | 601 | 34.7% | 33.3% | 595 | 35.6% | 33.4% | +6 | -0.9pp |
| 3 persons | 239 | 13.8% | 15.9% | 219 | 13.1% | 15.5% | +20 | +0.7pp |
| 4 persons | 294 | 17.0% | 19.0% | 276 | 16.5% | 18.7% | +18 | +0.5pp |
| 5 persons | 75 | 4.3% | 6.4% | 86 | 5.1% | 6.5% | -11 | -0.8pp |
| 6 or more persons | 25 | 1.4% | 1.9% | 23 | 1.4% | 1.9% | +2 | 0.0pp |
| Total classifiable households | 1,731 | 100.0% | 100.0% | 1,671 | 100.0% | 100.0% | +60 | 0.0pp |