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 Dalwallinu (S), accounting for 20.7% (286 people). This share was higher than Regional WA (19.9%). Since 2016, the biggest change was in Older workers and pre-retirees (50 to 59), which decreased by 35 people and 2 percentage points.
Section overview
Age structure - Service age groups
Dalwallinu (S) - Total persons (Usual residence)
This table summarises service age groups for Dalwallinu (S) in 2021 for persons, with comparison against Regional WA and change since 2016.
Chart view
Age structure - Service age groups snapshot
2021 distribution by category for Dalwallinu (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
110
% of total
8.0%
Change from 2016
+1.4pp
110
8.0%
+1.4pp
Primary schoolers (5 to 11)
2021 count
138
% of total
10.0%
Change from 2016
-0.5pp
138
10.0%
-0.5pp
Secondary schoolers (12 to 17)
2021 count
88
% of total
6.4%
Change from 2016
+1.9pp
88
6.4%
+1.9pp
Tertiary education and independence (18 to 24)
2021 count
96
% of total
7.0%
Change from 2016
-0.6pp
96
7.0%
-0.6pp
Young workforce (25 to 34)
2021 count
188
% of total
13.6%
Change from 2016
-1.3pp
188
13.6%
-1.3pp
Parents and homebuilders (35 to 49)
2021 count
286
% of total
20.7%
Change from 2016
+1.7pp
286
20.7%
+1.7pp
Older workers and pre-retirees (50 to 59)
2021 count
185
% of total
13.4%
Change from 2016
-2.0pp
185
13.4%
-2.0pp
Empty nesters and retirees (60 to 69)
2021 count
158
% of total
11.5%
Change from 2016
+1.0pp
158
11.5%
+1.0pp
Seniors (70 to 84)
2021 count
96
% of total
7.0%
Change from 2016
-2.0pp
96
7.0%
-2.0pp
Elderly aged (85 and over)
2021 count
37
% of total
2.7%
Change from 2016
+0.8pp
37
2.7%
+0.8pp
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+15
+1.4pp
Primary schoolers (5 to 11)
-12
-0.5pp
Secondary schoolers (12 to 17)
+24
+1.9pp
Tertiary education and independence (18 to 24)
-13
-0.6pp
Young workforce (25 to 34)
-25
-1.3pp
Parents and homebuilders (35 to 49)
+15
+1.7pp
Older workers and pre-retirees (50 to 59)
-35
-2.0pp
Empty nesters and retirees (60 to 69)
+8
+1.0pp
Seniors (70 to 84)
-33
-2.0pp
Elderly aged (85 and over)
+10
+0.8pp
Data table
Service age groups for Dalwallinu (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) | 110 | 8.0% | 6.0% | 95 | 6.6% | 6.6% | +15 | +1.4pp |
| Primary schoolers (5 to 11) | 138 | 10.0% | 9.5% | 150 | 10.5% | 9.8% | -12 | -0.5pp |
| Secondary schoolers (12 to 17) | 88 | 6.4% | 7.6% | 64 | 4.5% | 7.4% | +24 | +1.9pp |
| Tertiary education and independence (18 to 24) | 96 | 7.0% | 6.7% | 109 | 7.6% | 7.0% | -13 | -0.6pp |
| Young workforce (25 to 34) | 188 | 13.6% | 12.5% | 213 | 14.9% | 13.6% | -25 | -1.3pp |
| Parents and homebuilders (35 to 49) | 286 | 20.7% | 19.9% | 271 | 19.0% | 20.8% | +15 | +1.7pp |
| Older workers and pre-retirees (50 to 59) | 185 | 13.4% | 13.7% | 220 | 15.4% | 14.1% | -35 | -2.0pp |
| Empty nesters and retirees (60 to 69) | 158 | 11.5% | 12.4% | 150 | 10.5% | 11.3% | +8 | +1.0pp |
| Seniors (70 to 84) | 96 | 7.0% | 10.1% | 129 | 9.0% | 7.8% | -33 | -2.0pp |
| Elderly aged (85 and over) | 37 | 2.7% | 1.7% | 27 | 1.9% | 1.5% | +10 | +0.8pp |
| Total | 1,379 | 100.0% | 100.0% | 1,429 | 100.0% | 100.0% | -50 | 0.0pp |