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, Seniors (70 to 84) was the most common category among residents in Wyalkatchem (S), accounting for 19.4% (91 people). This share was higher than Regional WA (10.1%). Since 2016, the biggest change was in Young workforce (25 to 34), which decreased by 16 people and 2.3 percentage points.
Section overview
Age structure - Service age groups
Wyalkatchem (S) - Total persons (Usual residence)
This table summarises service age groups for Wyalkatchem (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 Wyalkatchem (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
17
% of total
3.6%
Change from 2016
-1.8pp
17
3.6%
-1.8pp
Primary schoolers (5 to 11)
2021 count
29
% of total
6.2%
Change from 2016
-0.6pp
29
6.2%
-0.6pp
Secondary schoolers (12 to 17)
2021 count
23
% of total
4.9%
Change from 2016
+1.2pp
23
4.9%
+1.2pp
Tertiary education and independence (18 to 24)
2021 count
28
% of total
6.0%
Change from 2016
+2.5pp
28
6.0%
+2.5pp
Young workforce (25 to 34)
2021 count
41
% of total
8.7%
Change from 2016
-2.3pp
41
8.7%
-2.3pp
Parents and homebuilders (35 to 49)
2021 count
74
% of total
15.7%
Change from 2016
0.0pp
74
15.7%
0.0pp
Older workers and pre-retirees (50 to 59)
2021 count
72
% of total
15.3%
Change from 2016
-1.4pp
72
15.3%
-1.4pp
Empty nesters and retirees (60 to 69)
2021 count
75
% of total
16.0%
Change from 2016
-1.1pp
75
16.0%
-1.1pp
Seniors (70 to 84)
2021 count
91
% of total
19.4%
Change from 2016
+1.6pp
91
19.4%
+1.6pp
Elderly aged (85 and over)
2021 count
6
% of total
1.3%
Change from 2016
-2.6pp
6
1.3%
-2.6pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-11
-1.8pp
Primary schoolers (5 to 11)
-6
-0.6pp
Secondary schoolers (12 to 17)
+4
+1.2pp
Tertiary education and independence (18 to 24)
+10
+2.5pp
Young workforce (25 to 34)
-16
-2.3pp
Parents and homebuilders (35 to 49)
-7
0.0pp
Older workers and pre-retirees (50 to 59)
-14
-1.4pp
Empty nesters and retirees (60 to 69)
-13
-1.1pp
Seniors (70 to 84)
-1
+1.6pp
Elderly aged (85 and over)
-14
-2.6pp
Data table
Service age groups for Wyalkatchem (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) | 17 | 3.6% | 6.0% | 28 | 5.4% | 6.6% | -11 | -1.8pp |
| Primary schoolers (5 to 11) | 29 | 6.2% | 9.5% | 35 | 6.8% | 9.8% | -6 | -0.6pp |
| Secondary schoolers (12 to 17) | 23 | 4.9% | 7.6% | 19 | 3.7% | 7.4% | +4 | +1.2pp |
| Tertiary education and independence (18 to 24) | 28 | 6.0% | 6.7% | 18 | 3.5% | 7.0% | +10 | +2.5pp |
| Young workforce (25 to 34) | 41 | 8.7% | 12.5% | 57 | 11.0% | 13.6% | -16 | -2.3pp |
| Parents and homebuilders (35 to 49) | 74 | 15.7% | 19.9% | 81 | 15.7% | 20.8% | -7 | 0.0pp |
| Older workers and pre-retirees (50 to 59) | 72 | 15.3% | 13.7% | 86 | 16.7% | 14.1% | -14 | -1.4pp |
| Empty nesters and retirees (60 to 69) | 75 | 16.0% | 12.4% | 88 | 17.1% | 11.3% | -13 | -1.1pp |
| Seniors (70 to 84) | 91 | 19.4% | 10.1% | 92 | 17.8% | 7.8% | -1 | +1.6pp |
| Elderly aged (85 and over) | 6 | 1.3% | 1.7% | 20 | 3.9% | 1.5% | -14 | -2.6pp |
| Total | 470 | 100.0% | 100.0% | 516 | 100.0% | 100.0% | -46 | 0.0pp |