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, Empty nesters and retirees (60 to 69) was the most common category among residents in Woodanilling (S), accounting for 19.4% (87 people). This share was higher than Regional WA (12.4%). Since 2016, the biggest change was in Older workers and pre-retirees (50 to 59), which decreased by 27 people and 8 percentage points.
Section overview
Age structure - Service age groups
Woodanilling (S) - Total persons (Usual residence)
This table summarises service age groups for Woodanilling (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 Woodanilling (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
31
% of total
6.9%
Change from 2016
-2.9pp
31
6.9%
-2.9pp
Primary schoolers (5 to 11)
2021 count
42
% of total
9.4%
Change from 2016
-2.1pp
42
9.4%
-2.1pp
Secondary schoolers (12 to 17)
2021 count
30
% of total
6.7%
Change from 2016
+4.0pp
30
6.7%
+4.0pp
Tertiary education and independence (18 to 24)
2021 count
28
% of total
6.3%
Change from 2016
+0.7pp
28
6.3%
+0.7pp
Young workforce (25 to 34)
2021 count
41
% of total
9.2%
Change from 2016
-2.3pp
41
9.2%
-2.3pp
Parents and homebuilders (35 to 49)
2021 count
75
% of total
16.7%
Change from 2016
-3.3pp
75
16.7%
-3.3pp
Older workers and pre-retirees (50 to 59)
2021 count
65
% of total
14.5%
Change from 2016
-8.0pp
65
14.5%
-8.0pp
Empty nesters and retirees (60 to 69)
2021 count
87
% of total
19.4%
Change from 2016
+4.5pp
87
19.4%
+4.5pp
Seniors (70 to 84)
2021 count
46
% of total
10.3%
Change from 2016
+2.5pp
46
10.3%
+2.5pp
Elderly aged (85 and over)
2021 count
3
% of total
0.7%
Change from 2016
+0.7pp
3
0.7%
+0.7pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-9
-2.9pp
Primary schoolers (5 to 11)
-5
-2.1pp
Secondary schoolers (12 to 17)
+19
+4.0pp
Tertiary education and independence (18 to 24)
+5
+0.7pp
Young workforce (25 to 34)
-6
-2.3pp
Parents and homebuilders (35 to 49)
-7
-3.3pp
Older workers and pre-retirees (50 to 59)
-27
-8.0pp
Empty nesters and retirees (60 to 69)
+26
+4.5pp
Seniors (70 to 84)
+14
+2.5pp
Elderly aged (85 and over)
+3
+0.7pp
Data table
Service age groups for Woodanilling (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) | 31 | 6.9% | 6.0% | 40 | 9.8% | 6.6% | -9 | -2.9pp |
| Primary schoolers (5 to 11) | 42 | 9.4% | 9.5% | 47 | 11.5% | 9.8% | -5 | -2.1pp |
| Secondary schoolers (12 to 17) | 30 | 6.7% | 7.6% | 11 | 2.7% | 7.4% | +19 | +4.0pp |
| Tertiary education and independence (18 to 24) | 28 | 6.3% | 6.7% | 23 | 5.6% | 7.0% | +5 | +0.7pp |
| Young workforce (25 to 34) | 41 | 9.2% | 12.5% | 47 | 11.5% | 13.6% | -6 | -2.3pp |
| Parents and homebuilders (35 to 49) | 75 | 16.7% | 19.9% | 82 | 20.0% | 20.8% | -7 | -3.3pp |
| Older workers and pre-retirees (50 to 59) | 65 | 14.5% | 13.7% | 92 | 22.5% | 14.1% | -27 | -8.0pp |
| Empty nesters and retirees (60 to 69) | 87 | 19.4% | 12.4% | 61 | 14.9% | 11.3% | +26 | +4.5pp |
| Seniors (70 to 84) | 46 | 10.3% | 10.1% | 32 | 7.8% | 7.8% | +14 | +2.5pp |
| Elderly aged (85 and over) | 3 | 0.7% | 1.7% | 0 | 0.0% | 1.5% | +3 | +0.7pp |
| Total | 448 | 100.0% | 100.0% | 409 | 100.0% | 100.0% | +39 | 0.0pp |