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, Older workers and pre-retirees (50 to 59) was the most common category among residents in Trayning (S), accounting for 23.2% (69 people). This share was higher than Regional WA (13.7%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which decreased by 40 people and 10.4 percentage points.
Section overview
Age structure - Service age groups
Trayning (S) - Total persons (Usual residence)
This table summarises service age groups for Trayning (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 Trayning (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
3
% of total
1.0%
Change from 2016
-3.6pp
3
1.0%
-3.6pp
Primary schoolers (5 to 11)
2021 count
3
% of total
1.0%
Change from 2016
-5.0pp
3
1.0%
-5.0pp
Secondary schoolers (12 to 17)
2021 count
26
% of total
8.7%
Change from 2016
+5.0pp
26
8.7%
+5.0pp
Tertiary education and independence (18 to 24)
2021 count
13
% of total
4.4%
Change from 2016
-2.7pp
13
4.4%
-2.7pp
Young workforce (25 to 34)
2021 count
42
% of total
14.1%
Change from 2016
+6.4pp
42
14.1%
+6.4pp
Parents and homebuilders (35 to 49)
2021 count
20
% of total
6.7%
Change from 2016
-10.4pp
20
6.7%
-10.4pp
Older workers and pre-retirees (50 to 59)
2021 count
69
% of total
23.2%
Change from 2016
+3.2pp
69
23.2%
+3.2pp
Empty nesters and retirees (60 to 69)
2021 count
39
% of total
13.1%
Change from 2016
-2.0pp
39
13.1%
-2.0pp
Seniors (70 to 84)
2021 count
49
% of total
16.4%
Change from 2016
+3.0pp
49
16.4%
+3.0pp
Elderly aged (85 and over)
2021 count
0
% of total
0.0%
Change from 2016
-2.9pp
0
0.0%
-2.9pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-13
-3.6pp
Primary schoolers (5 to 11)
-18
-5.0pp
Secondary schoolers (12 to 17)
+13
+5.0pp
Tertiary education and independence (18 to 24)
-12
-2.7pp
Young workforce (25 to 34)
+15
+6.4pp
Parents and homebuilders (35 to 49)
-40
-10.4pp
Older workers and pre-retirees (50 to 59)
-1
+3.2pp
Empty nesters and retirees (60 to 69)
-14
-2.0pp
Seniors (70 to 84)
+2
+3.0pp
Elderly aged (85 and over)
-10
-2.9pp
Data table
Service age groups for Trayning (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) | 3 | 1.0% | 6.0% | 16 | 4.6% | 6.6% | -13 | -3.6pp |
| Primary schoolers (5 to 11) | 3 | 1.0% | 9.5% | 21 | 6.0% | 9.8% | -18 | -5.0pp |
| Secondary schoolers (12 to 17) | 26 | 8.7% | 7.6% | 13 | 3.7% | 7.4% | +13 | +5.0pp |
| Tertiary education and independence (18 to 24) | 13 | 4.4% | 6.7% | 25 | 7.1% | 7.0% | -12 | -2.7pp |
| Young workforce (25 to 34) | 42 | 14.1% | 12.5% | 27 | 7.7% | 13.6% | +15 | +6.4pp |
| Parents and homebuilders (35 to 49) | 20 | 6.7% | 19.9% | 60 | 17.1% | 20.8% | -40 | -10.4pp |
| Older workers and pre-retirees (50 to 59) | 69 | 23.2% | 13.7% | 70 | 20.0% | 14.1% | -1 | +3.2pp |
| Empty nesters and retirees (60 to 69) | 39 | 13.1% | 12.4% | 53 | 15.1% | 11.3% | -14 | -2.0pp |
| Seniors (70 to 84) | 49 | 16.4% | 10.1% | 47 | 13.4% | 7.8% | +2 | +3.0pp |
| Elderly aged (85 and over) | 0 | 0.0% | 1.7% | 10 | 2.9% | 1.5% | -10 | -2.9pp |
| Total | 298 | 100.0% | 100.0% | 350 | 100.0% | 100.0% | -52 | 0.0pp |