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 Robe (DC), accounting for 18.5% (285 people). This share was higher than Regional SA (15.1%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 69 people and 2.9 percentage points.
Section overview
Age structure - Service age groups
Robe (DC) - Total persons (Usual residence)
This table summarises service age groups for Robe (DC) in 2021 for persons, with comparison against Regional SA and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Robe (DC), with comparison markers for Regional SA.
Babies and pre-schoolers (0 to 4)
2021 count
71
% of total
4.6%
Change from 2016
+0.6pp
71
4.6%
+0.6pp
Primary schoolers (5 to 11)
2021 count
97
% of total
6.3%
Change from 2016
-1.2pp
97
6.3%
-1.2pp
Secondary schoolers (12 to 17)
2021 count
93
% of total
6.0%
Change from 2016
+1.1pp
93
6.0%
+1.1pp
Tertiary education and independence (18 to 24)
2021 count
76
% of total
4.9%
Change from 2016
-1.1pp
76
4.9%
-1.1pp
Young workforce (25 to 34)
2021 count
143
% of total
9.3%
Change from 2016
0.0pp
143
9.3%
0.0pp
Parents and homebuilders (35 to 49)
2021 count
231
% of total
15.0%
Change from 2016
-3.1pp
231
15.0%
-3.1pp
Older workers and pre-retirees (50 to 59)
2021 count
240
% of total
15.6%
Change from 2016
-1.5pp
240
15.6%
-1.5pp
Empty nesters and retirees (60 to 69)
2021 count
285
% of total
18.5%
Change from 2016
+1.6pp
285
18.5%
+1.6pp
Seniors (70 to 84)
2021 count
267
% of total
17.3%
Change from 2016
+2.9pp
267
17.3%
+2.9pp
Elderly aged (85 and over)
2021 count
29
% of total
1.9%
Change from 2016
-1.0pp
29
1.9%
-1.0pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+16
+0.6pp
Primary schoolers (5 to 11)
-7
-1.2pp
Secondary schoolers (12 to 17)
+26
+1.1pp
Tertiary education and independence (18 to 24)
-7
-1.1pp
Young workforce (25 to 34)
+15
0.0pp
Parents and homebuilders (35 to 49)
-18
-3.1pp
Older workers and pre-retirees (50 to 59)
+5
-1.5pp
Empty nesters and retirees (60 to 69)
+52
+1.6pp
Seniors (70 to 84)
+69
+2.9pp
Elderly aged (85 and over)
-11
-1.0pp
Data table
Service age groups for Robe (DC). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Regional SA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional SA% | Count | % | Regional SA% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 71 | 4.6% | 4.9% | 55 | 4.0% | 5.5% | +16 | +0.6pp |
| Primary schoolers (5 to 11) | 97 | 6.3% | 8.1% | 104 | 7.5% | 8.6% | -7 | -1.2pp |
| Secondary schoolers (12 to 17) | 93 | 6.0% | 7.0% | 67 | 4.9% | 7.2% | +26 | +1.1pp |
| Tertiary education and independence (18 to 24) | 76 | 4.9% | 6.5% | 83 | 6.0% | 6.8% | -7 | -1.1pp |
| Young workforce (25 to 34) | 143 | 9.3% | 10.5% | 128 | 9.3% | 10.4% | +15 | 0.0pp |
| Parents and homebuilders (35 to 49) | 231 | 15.0% | 16.4% | 249 | 18.1% | 17.8% | -18 | -3.1pp |
| Older workers and pre-retirees (50 to 59) | 240 | 15.6% | 13.9% | 235 | 17.1% | 14.6% | +5 | -1.5pp |
| Empty nesters and retirees (60 to 69) | 285 | 18.5% | 15.1% | 233 | 16.9% | 14.4% | +52 | +1.6pp |
| Seniors (70 to 84) | 267 | 17.3% | 14.7% | 198 | 14.4% | 12.1% | +69 | +2.9pp |
| Elderly aged (85 and over) | 29 | 1.9% | 2.8% | 40 | 2.9% | 2.7% | -11 | -1.0pp |
| Total | 1,542 | 100.0% | 100.0% | 1,378 | 100.0% | 100.0% | +164 | 0.0pp |