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 Kangarilla (part), accounting for 18.6% (168 people). This share was higher than Onkaparinga (C) (12.3%). Since 2016, the biggest change was in Older workers and pre-retirees (50 to 59), which decreased by 54 people and 6.2 percentage points.
Section overview
Age structure - Service age groups
Kangarilla (part) - Total persons (Usual residence)
This table summarises service age groups for Kangarilla (part) in 2021 for persons, with comparison against Onkaparinga (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Kangarilla (part), with comparison markers for Onkaparinga (C).
Babies and pre-schoolers (0 to 4)
2021 count
39
% of total
4.3%
Change from 2016
-1.6pp
39
4.3%
-1.6pp
Primary schoolers (5 to 11)
2021 count
65
% of total
7.2%
Change from 2016
+1.2pp
65
7.2%
+1.2pp
Secondary schoolers (12 to 17)
2021 count
66
% of total
7.3%
Change from 2016
+0.9pp
66
7.3%
+0.9pp
Tertiary education and independence (18 to 24)
2021 count
73
% of total
8.1%
Change from 2016
-2.5pp
73
8.1%
-2.5pp
Young workforce (25 to 34)
2021 count
65
% of total
7.2%
Change from 2016
+2.3pp
65
7.2%
+2.3pp
Parents and homebuilders (35 to 49)
2021 count
160
% of total
17.7%
Change from 2016
-1.6pp
160
17.7%
-1.6pp
Older workers and pre-retirees (50 to 59)
2021 count
142
% of total
15.7%
Change from 2016
-6.2pp
142
15.7%
-6.2pp
Empty nesters and retirees (60 to 69)
2021 count
168
% of total
18.6%
Change from 2016
+1.5pp
168
18.6%
+1.5pp
Seniors (70 to 84)
2021 count
113
% of total
12.5%
Change from 2016
+3.9pp
113
12.5%
+3.9pp
Elderly aged (85 and over)
2021 count
24
% of total
2.7%
Change from 2016
+1.5pp
24
2.7%
+1.5pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-14
-1.6pp
Primary schoolers (5 to 11)
+11
+1.2pp
Secondary schoolers (12 to 17)
+9
+0.9pp
Tertiary education and independence (18 to 24)
-22
-2.5pp
Young workforce (25 to 34)
+21
+2.3pp
Parents and homebuilders (35 to 49)
-13
-1.6pp
Older workers and pre-retirees (50 to 59)
-54
-6.2pp
Empty nesters and retirees (60 to 69)
+15
+1.5pp
Seniors (70 to 84)
+36
+3.9pp
Elderly aged (85 and over)
+13
+1.5pp
Data table
Service age groups for Kangarilla (part). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Onkaparinga (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Onkaparinga (C)% | Count | % | Onkaparinga (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 39 | 4.3% | 5.4% | 53 | 5.9% | 6.2% | -14 | -1.6pp |
| Primary schoolers (5 to 11) | 65 | 7.2% | 8.6% | 54 | 6.0% | 8.9% | +11 | +1.2pp |
| Secondary schoolers (12 to 17) | 66 | 7.3% | 7.3% | 57 | 6.4% | 7.5% | +9 | +0.9pp |
| Tertiary education and independence (18 to 24) | 73 | 8.1% | 7.9% | 95 | 10.6% | 8.4% | -22 | -2.5pp |
| Young workforce (25 to 34) | 65 | 7.2% | 12.2% | 44 | 4.9% | 12.4% | +21 | +2.3pp |
| Parents and homebuilders (35 to 49) | 160 | 17.7% | 19.2% | 173 | 19.3% | 19.7% | -13 | -1.6pp |
| Older workers and pre-retirees (50 to 59) | 142 | 15.7% | 13.1% | 196 | 21.9% | 13.3% | -54 | -6.2pp |
| Empty nesters and retirees (60 to 69) | 168 | 18.6% | 12.3% | 153 | 17.1% | 12.4% | +15 | +1.5pp |
| Seniors (70 to 84) | 113 | 12.5% | 11.8% | 77 | 8.6% | 9.1% | +36 | +3.9pp |
| Elderly aged (85 and over) | 24 | 2.7% | 2.2% | 11 | 1.2% | 2.1% | +13 | +1.5pp |
| Total | 905 | 100.0% | 100.0% | 896 | 100.0% | 100.0% | +9 | 0.0pp |