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 Chapman Valley (S), accounting for 22.1% (344 people). This share was higher than Regional WA (19.9%). Since 2016, the biggest change was in Secondary schoolers (12 to 17), which increased by 47 people and 2.4 percentage points.
Section overview
Age structure - Service age groups
Chapman Valley (S) - Total persons (Usual residence)
This table summarises service age groups for Chapman Valley (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 Chapman Valley (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
79
% of total
5.1%
Change from 2016
-0.5pp
79
5.1%
-0.5pp
Primary schoolers (5 to 11)
2021 count
182
% of total
11.7%
Change from 2016
-2.4pp
182
11.7%
-2.4pp
Secondary schoolers (12 to 17)
2021 count
143
% of total
9.2%
Change from 2016
+2.4pp
143
9.2%
+2.4pp
Tertiary education and independence (18 to 24)
2021 count
83
% of total
5.3%
Change from 2016
+1.1pp
83
5.3%
+1.1pp
Young workforce (25 to 34)
2021 count
126
% of total
8.1%
Change from 2016
+0.2pp
126
8.1%
+0.2pp
Parents and homebuilders (35 to 49)
2021 count
344
% of total
22.1%
Change from 2016
-1.6pp
344
22.1%
-1.6pp
Older workers and pre-retirees (50 to 59)
2021 count
280
% of total
18.0%
Change from 2016
+1.4pp
280
18.0%
+1.4pp
Empty nesters and retirees (60 to 69)
2021 count
201
% of total
12.9%
Change from 2016
-0.3pp
201
12.9%
-0.3pp
Seniors (70 to 84)
2021 count
131
% of total
8.4%
Change from 2016
0.0pp
131
8.4%
0.0pp
Elderly aged (85 and over)
2021 count
5
% of total
0.3%
Change from 2016
-0.4pp
5
0.3%
-0.4pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
0
-0.5pp
Primary schoolers (5 to 11)
-19
-2.4pp
Secondary schoolers (12 to 17)
+47
+2.4pp
Tertiary education and independence (18 to 24)
+23
+1.1pp
Young workforce (25 to 34)
+14
+0.2pp
Parents and homebuilders (35 to 49)
+7
-1.6pp
Older workers and pre-retirees (50 to 59)
+44
+1.4pp
Empty nesters and retirees (60 to 69)
+14
-0.3pp
Seniors (70 to 84)
+12
0.0pp
Elderly aged (85 and over)
-5
-0.4pp
Data table
Service age groups for Chapman Valley (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) | 79 | 5.1% | 6.0% | 79 | 5.6% | 6.6% | 0 | -0.5pp |
| Primary schoolers (5 to 11) | 182 | 11.7% | 9.5% | 201 | 14.1% | 9.8% | -19 | -2.4pp |
| Secondary schoolers (12 to 17) | 143 | 9.2% | 7.6% | 96 | 6.8% | 7.4% | +47 | +2.4pp |
| Tertiary education and independence (18 to 24) | 83 | 5.3% | 6.7% | 60 | 4.2% | 7.0% | +23 | +1.1pp |
| Young workforce (25 to 34) | 126 | 8.1% | 12.5% | 112 | 7.9% | 13.6% | +14 | +0.2pp |
| Parents and homebuilders (35 to 49) | 344 | 22.1% | 19.9% | 337 | 23.7% | 20.8% | +7 | -1.6pp |
| Older workers and pre-retirees (50 to 59) | 280 | 18.0% | 13.7% | 236 | 16.6% | 14.1% | +44 | +1.4pp |
| Empty nesters and retirees (60 to 69) | 201 | 12.9% | 12.4% | 187 | 13.2% | 11.3% | +14 | -0.3pp |
| Seniors (70 to 84) | 131 | 8.4% | 10.1% | 119 | 8.4% | 7.8% | +12 | 0.0pp |
| Elderly aged (85 and over) | 5 | 0.3% | 1.7% | 10 | 0.7% | 1.5% | -5 | -0.4pp |
| Total | 1,556 | 100.0% | 100.0% | 1,422 | 100.0% | 100.0% | +134 | 0.0pp |