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 Orroroo/Carrieton (DC), accounting for 20% (175 people). This share was higher than Regional SA (15.1%). Since 2016, the biggest change was in Babies and pre-schoolers (0 to 4), which increased by 18 people and 2.2 percentage points.
Section overview
Age structure - Service age groups
Orroroo/Carrieton (DC) - Total persons (Usual residence)
This table summarises service age groups for Orroroo/Carrieton (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 Orroroo/Carrieton (DC), with comparison markers for Regional SA.
Babies and pre-schoolers (0 to 4)
2021 count
62
% of total
7.1%
Change from 2016
+2.2pp
62
7.1%
+2.2pp
Primary schoolers (5 to 11)
2021 count
67
% of total
7.7%
Change from 2016
0.0pp
67
7.7%
0.0pp
Secondary schoolers (12 to 17)
2021 count
62
% of total
7.1%
Change from 2016
-0.6pp
62
7.1%
-0.6pp
Tertiary education and independence (18 to 24)
2021 count
33
% of total
3.8%
Change from 2016
-0.9pp
33
3.8%
-0.9pp
Young workforce (25 to 34)
2021 count
91
% of total
10.4%
Change from 2016
+1.6pp
91
10.4%
+1.6pp
Parents and homebuilders (35 to 49)
2021 count
118
% of total
13.5%
Change from 2016
+0.3pp
118
13.5%
+0.3pp
Older workers and pre-retirees (50 to 59)
2021 count
124
% of total
14.2%
Change from 2016
+1.1pp
124
14.2%
+1.1pp
Empty nesters and retirees (60 to 69)
2021 count
175
% of total
20.0%
Change from 2016
+1.2pp
175
20.0%
+1.2pp
Seniors (70 to 84)
2021 count
116
% of total
13.3%
Change from 2016
-1.2pp
116
13.3%
-1.2pp
Elderly aged (85 and over)
2021 count
44
% of total
5.0%
Change from 2016
+0.4pp
44
5.0%
+0.4pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+18
+2.2pp
Primary schoolers (5 to 11)
-2
0.0pp
Secondary schoolers (12 to 17)
-7
-0.6pp
Tertiary education and independence (18 to 24)
-9
-0.9pp
Young workforce (25 to 34)
+12
+1.6pp
Parents and homebuilders (35 to 49)
0
+0.3pp
Older workers and pre-retirees (50 to 59)
+7
+1.1pp
Empty nesters and retirees (60 to 69)
+7
+1.2pp
Seniors (70 to 84)
-14
-1.2pp
Elderly aged (85 and over)
+3
+0.4pp
Data table
Service age groups for Orroroo/Carrieton (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) | 62 | 7.1% | 4.9% | 44 | 4.9% | 5.5% | +18 | +2.2pp |
| Primary schoolers (5 to 11) | 67 | 7.7% | 8.1% | 69 | 7.7% | 8.6% | -2 | 0.0pp |
| Secondary schoolers (12 to 17) | 62 | 7.1% | 7.0% | 69 | 7.7% | 7.2% | -7 | -0.6pp |
| Tertiary education and independence (18 to 24) | 33 | 3.8% | 6.5% | 42 | 4.7% | 6.8% | -9 | -0.9pp |
| Young workforce (25 to 34) | 91 | 10.4% | 10.5% | 79 | 8.8% | 10.4% | +12 | +1.6pp |
| Parents and homebuilders (35 to 49) | 118 | 13.5% | 16.4% | 118 | 13.2% | 17.8% | 0 | +0.3pp |
| Older workers and pre-retirees (50 to 59) | 124 | 14.2% | 13.9% | 117 | 13.1% | 14.6% | +7 | +1.1pp |
| Empty nesters and retirees (60 to 69) | 175 | 20.0% | 15.1% | 168 | 18.8% | 14.4% | +7 | +1.2pp |
| Seniors (70 to 84) | 116 | 13.3% | 14.7% | 130 | 14.5% | 12.1% | -14 | -1.2pp |
| Elderly aged (85 and over) | 44 | 5.0% | 2.8% | 41 | 4.6% | 2.7% | +3 | +0.4pp |
| Total | 874 | 100.0% | 100.0% | 895 | 100.0% | 100.0% | -21 | 0.0pp |