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 Jerramungup (S), accounting for 18.3% (212 people). This share was lower than Regional WA (19.9%). Since 2016, the biggest change was in Young workforce (25 to 34), which decreased by 29 people and 3.2 percentage points.
Section overview
Age structure - Service age groups
Jerramungup (S) - Total persons (Usual residence)
This table summarises service age groups for Jerramungup (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 Jerramungup (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
96
% of total
8.3%
Change from 2016
+1.2pp
96
8.3%
+1.2pp
Primary schoolers (5 to 11)
2021 count
124
% of total
10.7%
Change from 2016
-1.7pp
124
10.7%
-1.7pp
Secondary schoolers (12 to 17)
2021 count
58
% of total
5.0%
Change from 2016
+1.4pp
58
5.0%
+1.4pp
Tertiary education and independence (18 to 24)
2021 count
53
% of total
4.6%
Change from 2016
-0.7pp
53
4.6%
-0.7pp
Young workforce (25 to 34)
2021 count
135
% of total
11.6%
Change from 2016
-3.2pp
135
11.6%
-3.2pp
Parents and homebuilders (35 to 49)
2021 count
212
% of total
18.3%
Change from 2016
+0.2pp
212
18.3%
+0.2pp
Older workers and pre-retirees (50 to 59)
2021 count
184
% of total
15.9%
Change from 2016
-2.1pp
184
15.9%
-2.1pp
Empty nesters and retirees (60 to 69)
2021 count
182
% of total
15.7%
Change from 2016
+0.6pp
182
15.7%
+0.6pp
Seniors (70 to 84)
2021 count
94
% of total
8.1%
Change from 2016
+0.3pp
94
8.1%
+0.3pp
Elderly aged (85 and over)
2021 count
13
% of total
1.1%
Change from 2016
+0.3pp
13
1.1%
+0.3pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+17
+1.2pp
Primary schoolers (5 to 11)
-13
-1.7pp
Secondary schoolers (12 to 17)
+18
+1.4pp
Tertiary education and independence (18 to 24)
-6
-0.7pp
Young workforce (25 to 34)
-29
-3.2pp
Parents and homebuilders (35 to 49)
+11
+0.2pp
Older workers and pre-retirees (50 to 59)
-16
-2.1pp
Empty nesters and retirees (60 to 69)
+14
+0.6pp
Seniors (70 to 84)
+7
+0.3pp
Elderly aged (85 and over)
+4
+0.3pp
Data table
Service age groups for Jerramungup (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) | 96 | 8.3% | 6.0% | 79 | 7.1% | 6.6% | +17 | +1.2pp |
| Primary schoolers (5 to 11) | 124 | 10.7% | 9.5% | 137 | 12.4% | 9.8% | -13 | -1.7pp |
| Secondary schoolers (12 to 17) | 58 | 5.0% | 7.6% | 40 | 3.6% | 7.4% | +18 | +1.4pp |
| Tertiary education and independence (18 to 24) | 53 | 4.6% | 6.7% | 59 | 5.3% | 7.0% | -6 | -0.7pp |
| Young workforce (25 to 34) | 135 | 11.6% | 12.5% | 164 | 14.8% | 13.6% | -29 | -3.2pp |
| Parents and homebuilders (35 to 49) | 212 | 18.3% | 19.9% | 201 | 18.1% | 20.8% | +11 | +0.2pp |
| Older workers and pre-retirees (50 to 59) | 184 | 15.9% | 13.7% | 200 | 18.0% | 14.1% | -16 | -2.1pp |
| Empty nesters and retirees (60 to 69) | 182 | 15.7% | 12.4% | 168 | 15.1% | 11.3% | +14 | +0.6pp |
| Seniors (70 to 84) | 94 | 8.1% | 10.1% | 87 | 7.8% | 7.8% | +7 | +0.3pp |
| Elderly aged (85 and over) | 13 | 1.1% | 1.7% | 9 | 0.8% | 1.5% | +4 | +0.3pp |
| Total | 1,160 | 100.0% | 100.0% | 1,109 | 100.0% | 100.0% | +51 | 0.0pp |