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 Aberfoyle Park, accounting for 19.3% (2,163 people). This share was similar to Onkaparinga (C) (19.2%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 414 people and 3.6 percentage points.
Section overview
Age structure - Service age groups
Aberfoyle Park - Total persons (Usual residence)
This table summarises service age groups for Aberfoyle Park in 2021 for persons, with comparison against Onkaparinga (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Aberfoyle Park, with comparison markers for Onkaparinga (C).
Babies and pre-schoolers (0 to 4)
2021 count
570
% of total
5.1%
Change from 2016
-0.2pp
570
5.1%
-0.2pp
Primary schoolers (5 to 11)
2021 count
930
% of total
8.3%
Change from 2016
0.0pp
930
8.3%
0.0pp
Secondary schoolers (12 to 17)
2021 count
840
% of total
7.5%
Change from 2016
-1.0pp
840
7.5%
-1.0pp
Tertiary education and independence (18 to 24)
2021 count
886
% of total
7.9%
Change from 2016
-1.4pp
886
7.9%
-1.4pp
Young workforce (25 to 34)
2021 count
1,219
% of total
10.9%
Change from 2016
-0.6pp
1,219
10.9%
-0.6pp
Parents and homebuilders (35 to 49)
2021 count
2,163
% of total
19.3%
Change from 2016
-0.1pp
2,163
19.3%
-0.1pp
Older workers and pre-retirees (50 to 59)
2021 count
1,532
% of total
13.6%
Change from 2016
-2.1pp
1,532
13.6%
-2.1pp
Empty nesters and retirees (60 to 69)
2021 count
1,555
% of total
13.8%
Change from 2016
+1.3pp
1,555
13.8%
+1.3pp
Seniors (70 to 84)
2021 count
1,181
% of total
10.5%
Change from 2016
+3.6pp
1,181
10.5%
+3.6pp
Elderly aged (85 and over)
2021 count
358
% of total
3.2%
Change from 2016
+0.9pp
358
3.2%
+0.9pp
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
-0.2pp
Primary schoolers (5 to 11)
+9
0.0pp
Secondary schoolers (12 to 17)
-96
-1.0pp
Tertiary education and independence (18 to 24)
-142
-1.4pp
Young workforce (25 to 34)
-55
-0.6pp
Parents and homebuilders (35 to 49)
+21
-0.1pp
Older workers and pre-retirees (50 to 59)
-198
-2.1pp
Empty nesters and retirees (60 to 69)
+177
+1.3pp
Seniors (70 to 84)
+414
+3.6pp
Elderly aged (85 and over)
+99
+0.9pp
Data table
Service age groups for Aberfoyle Park. 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) | 570 | 5.1% | 5.4% | 587 | 5.3% | 6.2% | -17 | -0.2pp |
| Primary schoolers (5 to 11) | 930 | 8.3% | 8.6% | 921 | 8.3% | 8.9% | +9 | 0.0pp |
| Secondary schoolers (12 to 17) | 840 | 7.5% | 7.3% | 936 | 8.5% | 7.5% | -96 | -1.0pp |
| Tertiary education and independence (18 to 24) | 886 | 7.9% | 7.9% | 1,028 | 9.3% | 8.4% | -142 | -1.4pp |
| Young workforce (25 to 34) | 1,219 | 10.9% | 12.2% | 1,274 | 11.5% | 12.4% | -55 | -0.6pp |
| Parents and homebuilders (35 to 49) | 2,163 | 19.3% | 19.2% | 2,142 | 19.4% | 19.7% | +21 | -0.1pp |
| Older workers and pre-retirees (50 to 59) | 1,532 | 13.6% | 13.1% | 1,730 | 15.7% | 13.3% | -198 | -2.1pp |
| Empty nesters and retirees (60 to 69) | 1,555 | 13.8% | 12.3% | 1,378 | 12.5% | 12.4% | +177 | +1.3pp |
| Seniors (70 to 84) | 1,181 | 10.5% | 11.8% | 767 | 6.9% | 9.1% | +414 | +3.6pp |
| Elderly aged (85 and over) | 358 | 3.2% | 2.2% | 259 | 2.3% | 2.1% | +99 | +0.9pp |
| Total | 11,234 | 100.0% | 100.0% | 11,039 | 100.0% | 100.0% | +195 | 0.0pp |