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 Wongan-Ballidu (S), accounting for 18% (233 people). This share was lower than Regional WA (19.9%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 49 people and 4 percentage points.
Section overview
Age structure - Service age groups
Wongan-Ballidu (S) - Total persons (Usual residence)
This table summarises service age groups for Wongan-Ballidu (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 Wongan-Ballidu (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
77
% of total
5.9%
Change from 2016
-0.6pp
77
5.9%
-0.6pp
Primary schoolers (5 to 11)
2021 count
129
% of total
9.9%
Change from 2016
-1.6pp
129
9.9%
-1.6pp
Secondary schoolers (12 to 17)
2021 count
45
% of total
3.5%
Change from 2016
-0.6pp
45
3.5%
-0.6pp
Tertiary education and independence (18 to 24)
2021 count
80
% of total
6.2%
Change from 2016
+0.1pp
80
6.2%
+0.1pp
Young workforce (25 to 34)
2021 count
157
% of total
12.1%
Change from 2016
-1.1pp
157
12.1%
-1.1pp
Parents and homebuilders (35 to 49)
2021 count
233
% of total
18.0%
Change from 2016
-0.4pp
233
18.0%
-0.4pp
Older workers and pre-retirees (50 to 59)
2021 count
162
% of total
12.5%
Change from 2016
-2.9pp
162
12.5%
-2.9pp
Empty nesters and retirees (60 to 69)
2021 count
205
% of total
15.8%
Change from 2016
+1.8pp
205
15.8%
+1.8pp
Seniors (70 to 84)
2021 count
158
% of total
12.2%
Change from 2016
+4.0pp
158
12.2%
+4.0pp
Elderly aged (85 and over)
2021 count
18
% of total
1.4%
Change from 2016
-0.5pp
18
1.4%
-0.5pp
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-10
-0.6pp
Primary schoolers (5 to 11)
-24
-1.6pp
Secondary schoolers (12 to 17)
-10
-0.6pp
Tertiary education and independence (18 to 24)
-1
+0.1pp
Young workforce (25 to 34)
-19
-1.1pp
Parents and homebuilders (35 to 49)
-12
-0.4pp
Older workers and pre-retirees (50 to 59)
-43
-2.9pp
Empty nesters and retirees (60 to 69)
+19
+1.8pp
Seniors (70 to 84)
+49
+4.0pp
Elderly aged (85 and over)
-7
-0.5pp
Data table
Service age groups for Wongan-Ballidu (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) | 77 | 5.9% | 6.0% | 87 | 6.5% | 6.6% | -10 | -0.6pp |
| Primary schoolers (5 to 11) | 129 | 9.9% | 9.5% | 153 | 11.5% | 9.8% | -24 | -1.6pp |
| Secondary schoolers (12 to 17) | 45 | 3.5% | 7.6% | 55 | 4.1% | 7.4% | -10 | -0.6pp |
| Tertiary education and independence (18 to 24) | 80 | 6.2% | 6.7% | 81 | 6.1% | 7.0% | -1 | +0.1pp |
| Young workforce (25 to 34) | 157 | 12.1% | 12.5% | 176 | 13.2% | 13.6% | -19 | -1.1pp |
| Parents and homebuilders (35 to 49) | 233 | 18.0% | 19.9% | 245 | 18.4% | 20.8% | -12 | -0.4pp |
| Older workers and pre-retirees (50 to 59) | 162 | 12.5% | 13.7% | 205 | 15.4% | 14.1% | -43 | -2.9pp |
| Empty nesters and retirees (60 to 69) | 205 | 15.8% | 12.4% | 186 | 14.0% | 11.3% | +19 | +1.8pp |
| Seniors (70 to 84) | 158 | 12.2% | 10.1% | 109 | 8.2% | 7.8% | +49 | +4.0pp |
| Elderly aged (85 and over) | 18 | 1.4% | 1.7% | 25 | 1.9% | 1.5% | -7 | -0.5pp |
| Total | 1,297 | 100.0% | 100.0% | 1,331 | 100.0% | 100.0% | -34 | 0.0pp |