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 Dumbleyung (S), accounting for 20.1% (137 people). This share was higher than Regional WA (19.9%). Since 2016, the biggest change was in Young workforce (25 to 34), which decreased by 32 people and 4.9 percentage points.
Section overview
Age structure - Service age groups
Dumbleyung (S) - Total persons (Usual residence)
This table summarises service age groups for Dumbleyung (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 Dumbleyung (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
42
% of total
6.2%
Change from 2016
-0.8pp
42
6.2%
-0.8pp
Primary schoolers (5 to 11)
2021 count
71
% of total
10.4%
Change from 2016
+0.7pp
71
10.4%
+0.7pp
Secondary schoolers (12 to 17)
2021 count
31
% of total
4.6%
Change from 2016
+3.1pp
31
4.6%
+3.1pp
Tertiary education and independence (18 to 24)
2021 count
28
% of total
4.1%
Change from 2016
+0.4pp
28
4.1%
+0.4pp
Young workforce (25 to 34)
2021 count
68
% of total
10.0%
Change from 2016
-4.9pp
68
10.0%
-4.9pp
Parents and homebuilders (35 to 49)
2021 count
137
% of total
20.1%
Change from 2016
+1.3pp
137
20.1%
+1.3pp
Older workers and pre-retirees (50 to 59)
2021 count
90
% of total
13.2%
Change from 2016
-2.7pp
90
13.2%
-2.7pp
Empty nesters and retirees (60 to 69)
2021 count
109
% of total
16.0%
Change from 2016
+2.1pp
109
16.0%
+2.1pp
Seniors (70 to 84)
2021 count
70
% of total
10.3%
Change from 2016
+1.5pp
70
10.3%
+1.5pp
Elderly aged (85 and over)
2021 count
0
% of total
0.0%
Change from 2016
-0.9pp
0
0.0%
-0.9pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-5
-0.8pp
Primary schoolers (5 to 11)
+6
+0.7pp
Secondary schoolers (12 to 17)
+21
+3.1pp
Tertiary education and independence (18 to 24)
+3
+0.4pp
Young workforce (25 to 34)
-32
-4.9pp
Parents and homebuilders (35 to 49)
+11
+1.3pp
Older workers and pre-retirees (50 to 59)
-17
-2.7pp
Empty nesters and retirees (60 to 69)
+16
+2.1pp
Seniors (70 to 84)
+11
+1.5pp
Elderly aged (85 and over)
-6
-0.9pp
Data table
Service age groups for Dumbleyung (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) | 42 | 6.2% | 6.0% | 47 | 7.0% | 6.6% | -5 | -0.8pp |
| Primary schoolers (5 to 11) | 71 | 10.4% | 9.5% | 65 | 9.7% | 9.8% | +6 | +0.7pp |
| Secondary schoolers (12 to 17) | 31 | 4.6% | 7.6% | 10 | 1.5% | 7.4% | +21 | +3.1pp |
| Tertiary education and independence (18 to 24) | 28 | 4.1% | 6.7% | 25 | 3.7% | 7.0% | +3 | +0.4pp |
| Young workforce (25 to 34) | 68 | 10.0% | 12.5% | 100 | 14.9% | 13.6% | -32 | -4.9pp |
| Parents and homebuilders (35 to 49) | 137 | 20.1% | 19.9% | 126 | 18.8% | 20.8% | +11 | +1.3pp |
| Older workers and pre-retirees (50 to 59) | 90 | 13.2% | 13.7% | 107 | 15.9% | 14.1% | -17 | -2.7pp |
| Empty nesters and retirees (60 to 69) | 109 | 16.0% | 12.4% | 93 | 13.9% | 11.3% | +16 | +2.1pp |
| Seniors (70 to 84) | 70 | 10.3% | 10.1% | 59 | 8.8% | 7.8% | +11 | +1.5pp |
| Elderly aged (85 and over) | 0 | 0.0% | 1.7% | 6 | 0.9% | 1.5% | -6 | -0.9pp |
| Total | 681 | 100.0% | 100.0% | 671 | 100.0% | 100.0% | +10 | 0.0pp |