Population
Service age groups
About this topic
Service age groups divide the population into broad life-stage bands such as children, young adults, working-age adults, and older people. The groupings are designed to reflect typical demand for age-based services and facilities rather than exact five-year cohorts.
This view is useful for planning childcare, schools, recreation, aged services, and other community infrastructure. It works best alongside five year age groups, household type, and dwelling data, which add more detail about who is living in an area and how needs may change over time.
Interpretation notes
- This is a derived grouping rather than a direct Census question, so the age bands are planning-oriented summaries built from standard age data.
- Percentages relate to the total population; use five year age groups when exact cohort detail matters.
Related topics
Key insight
In 2021, Parents and homebuilders (35 to 49) was the most common category among residents in Donnybrook-Balingup (S), accounting for 17.4% (1,073 people). This share was lower than Regional WA (19.9%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 217 people and 3 percentage points.
Section overview
Age structure - Service age groups
Donnybrook-Balingup (S) - Total persons (Usual residence)
This table summarises service age groups for Donnybrook-Balingup (S) in 2021 for persons, with comparison against Regional WA and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Donnybrook-Balingup (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
303
% of total
4.9%
Change from 2016
-0.5pp
303
4.9%
-0.5pp
Primary schoolers (5 to 11)
2021 count
509
% of total
8.3%
Change from 2016
-0.4pp
509
8.3%
-0.4pp
Secondary schoolers (12 to 17)
2021 count
424
% of total
6.9%
Change from 2016
-0.9pp
424
6.9%
-0.9pp
Tertiary education and independence (18 to 24)
2021 count
332
% of total
5.4%
Change from 2016
+0.5pp
332
5.4%
+0.5pp
Young workforce (25 to 34)
2021 count
501
% of total
8.1%
Change from 2016
-0.6pp
501
8.1%
-0.6pp
Parents and homebuilders (35 to 49)
2021 count
1,073
% of total
17.4%
Change from 2016
-0.8pp
1,073
17.4%
-0.8pp
Older workers and pre-retirees (50 to 59)
2021 count
924
% of total
15.0%
Change from 2016
-1.3pp
924
15.0%
-1.3pp
Empty nesters and retirees (60 to 69)
2021 count
1,063
% of total
17.3%
Change from 2016
+0.7pp
1,063
17.3%
+0.7pp
Seniors (70 to 84)
2021 count
896
% of total
14.6%
Change from 2016
+3.0pp
896
14.6%
+3.0pp
Elderly aged (85 and over)
2021 count
129
% of total
2.1%
Change from 2016
+0.2pp
129
2.1%
+0.2pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-12
-0.5pp
Primary schoolers (5 to 11)
-1
-0.4pp
Secondary schoolers (12 to 17)
-32
-0.9pp
Tertiary education and independence (18 to 24)
+44
+0.5pp
Young workforce (25 to 34)
-8
-0.6pp
Parents and homebuilders (35 to 49)
+2
-0.8pp
Older workers and pre-retirees (50 to 59)
-32
-1.3pp
Empty nesters and retirees (60 to 69)
+87
+0.7pp
Seniors (70 to 84)
+217
+3.0pp
Elderly aged (85 and over)
+17
+0.2pp
Data table
Service age groups for Donnybrook-Balingup (S). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Regional WA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional WA% | Count | % | Regional WA% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 303 | 4.9% | 6.0% | 315 | 5.4% | 6.6% | -12 | -0.5pp |
| Primary schoolers (5 to 11) | 509 | 8.3% | 9.5% | 510 | 8.7% | 9.8% | -1 | -0.4pp |
| Secondary schoolers (12 to 17) | 424 | 6.9% | 7.6% | 456 | 7.8% | 7.4% | -32 | -0.9pp |
| Tertiary education and independence (18 to 24) | 332 | 5.4% | 6.7% | 288 | 4.9% | 7.0% | +44 | +0.5pp |
| Young workforce (25 to 34) | 501 | 8.1% | 12.5% | 509 | 8.7% | 13.6% | -8 | -0.6pp |
| Parents and homebuilders (35 to 49) | 1,073 | 17.4% | 19.9% | 1,071 | 18.2% | 20.8% | +2 | -0.8pp |
| Older workers and pre-retirees (50 to 59) | 924 | 15.0% | 13.7% | 956 | 16.3% | 14.1% | -32 | -1.3pp |
| Empty nesters and retirees (60 to 69) | 1,063 | 17.3% | 12.4% | 976 | 16.6% | 11.3% | +87 | +0.7pp |
| Seniors (70 to 84) | 896 | 14.6% | 10.1% | 679 | 11.6% | 7.8% | +217 | +3.0pp |
| Elderly aged (85 and over) | 129 | 2.1% | 1.7% | 112 | 1.9% | 1.5% | +17 | +0.2pp |
| Total | 6,155 | 100.0% | 100.0% | 5,870 | 100.0% | 100.0% | +285 | 0.0pp |