Population
Five year age groups
About this topic
Five year age groups show the population in standard five-year cohorts from early childhood through older age. Because each band covers the same span of years, the topic gives a clear and comparable view of an area's age structure.
This topic is useful for identifying growth or decline in specific cohorts and for comparing age patterns across places and over time. For service planning, it is often read together with service age groups, household types, and dwelling types.
Interpretation notes
- Age is reported as at Census night, so the counts are a snapshot of the resident age structure at that point in time.
- Because each band covers the same five-year span, this topic is best for exact cohort comparison rather than service-planning life stages.
Related topics
Key insight
In 2021, 60 to 64 year olds was the largest age group among residents in Aberfoyle Park, accounting for 7.3% (824 people). This share was higher than Onkaparinga (C) (6.3%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 241 people and 2 percentage points.
Section overview
Age structure - Five year age groups
Aberfoyle Park - Total persons (Usual residence)
This table summarises five year age groups for Aberfoyle Park in 2021 for persons, with comparison against Onkaparinga (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Aberfoyle Park, with comparison markers for Onkaparinga (C).
0 to 4
2021 count
570
% of total
5.1%
Change from 2016
-0.2pp
570
5.1%
-0.2pp
5 to 9
2021 count
684
% of total
6.1%
Change from 2016
0.0pp
684
6.1%
0.0pp
10 to 14
2021 count
679
% of total
6.0%
Change from 2016
-0.1pp
679
6.0%
-0.1pp
15 to 19
2021 count
680
% of total
6.1%
Change from 2016
-1.5pp
680
6.1%
-1.5pp
20 to 24
2021 count
613
% of total
5.5%
Change from 2016
-0.8pp
613
5.5%
-0.8pp
25 to 29
2021 count
571
% of total
5.1%
Change from 2016
-0.4pp
571
5.1%
-0.4pp
30 to 34
2021 count
648
% of total
5.8%
Change from 2016
-0.3pp
648
5.8%
-0.3pp
35 to 39
2021 count
762
% of total
6.8%
Change from 2016
+0.7pp
762
6.8%
+0.7pp
40 to 44
2021 count
711
% of total
6.3%
Change from 2016
0.0pp
711
6.3%
0.0pp
45 to 49
2021 count
690
% of total
6.1%
Change from 2016
-1.0pp
690
6.1%
-1.0pp
50 to 54
2021 count
730
% of total
6.5%
Change from 2016
-1.2pp
730
6.5%
-1.2pp
55 to 59
2021 count
802
% of total
7.1%
Change from 2016
-0.9pp
802
7.1%
-0.9pp
60 to 64
2021 count
824
% of total
7.3%
Change from 2016
+0.1pp
824
7.3%
+0.1pp
65 to 69
2021 count
731
% of total
6.5%
Change from 2016
+1.2pp
731
6.5%
+1.2pp
70 to 74
2021 count
578
% of total
5.1%
Change from 2016
+2.0pp
578
5.1%
+2.0pp
75 to 79
2021 count
354
% of total
3.2%
Change from 2016
+1.0pp
354
3.2%
+1.0pp
80 to 84
2021 count
249
% of total
2.2%
Change from 2016
+0.6pp
249
2.2%
+0.6pp
85 and over
2021 count
358
% of total
3.2%
Change from 2016
+0.9pp
358
3.2%
+0.9pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-17
-0.2pp
5 to 9
+10
0.0pp
10 to 14
+6
-0.1pp
15 to 19
-164
-1.5pp
20 to 24
-81
-0.8pp
25 to 29
-31
-0.4pp
30 to 34
-24
-0.3pp
35 to 39
+91
+0.7pp
40 to 44
+21
0.0pp
45 to 49
-91
-1.0pp
50 to 54
-119
-1.2pp
55 to 59
-79
-0.9pp
60 to 64
+34
+0.1pp
65 to 69
+143
+1.2pp
70 to 74
+241
+2.0pp
75 to 79
+106
+1.0pp
80 to 84
+67
+0.6pp
85 and over
+99
+0.9pp
Data table
Five year age groups for Aberfoyle Park. Age structure - Five year 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 | |
| 0 to 4 | 570 | 5.1% | 5.4% | 587 | 5.3% | 6.2% | -17 | -0.2pp |
| 5 to 9 | 684 | 6.1% | 6.2% | 674 | 6.1% | 6.4% | +10 | 0.0pp |
| 10 to 14 | 679 | 6.0% | 6.2% | 673 | 6.1% | 6.1% | +6 | -0.1pp |
| 15 to 19 | 680 | 6.1% | 5.8% | 844 | 7.6% | 6.2% | -164 | -1.5pp |
| 20 to 24 | 613 | 5.5% | 5.6% | 694 | 6.3% | 6.0% | -81 | -0.8pp |
| 25 to 29 | 571 | 5.1% | 6.0% | 602 | 5.5% | 5.9% | -31 | -0.4pp |
| 30 to 34 | 648 | 5.8% | 6.3% | 672 | 6.1% | 6.5% | -24 | -0.3pp |
| 35 to 39 | 762 | 6.8% | 6.7% | 671 | 6.1% | 6.3% | +91 | +0.7pp |
| 40 to 44 | 711 | 6.3% | 6.1% | 690 | 6.3% | 6.6% | +21 | 0.0pp |
| 45 to 49 | 690 | 6.1% | 6.4% | 781 | 7.1% | 6.9% | -91 | -1.0pp |
| 50 to 54 | 730 | 6.5% | 6.6% | 849 | 7.7% | 6.7% | -119 | -1.2pp |
| 55 to 59 | 802 | 7.1% | 6.5% | 881 | 8.0% | 6.6% | -79 | -0.9pp |
| 60 to 64 | 824 | 7.3% | 6.3% | 790 | 7.2% | 6.3% | +34 | +0.1pp |
| 65 to 69 | 731 | 6.5% | 5.9% | 588 | 5.3% | 6.1% | +143 | +1.2pp |
| 70 to 74 | 578 | 5.1% | 5.7% | 337 | 3.1% | 4.3% | +241 | +2.0pp |
| 75 to 79 | 354 | 3.2% | 3.8% | 248 | 2.2% | 2.8% | +106 | +1.0pp |
| 80 to 84 | 249 | 2.2% | 2.3% | 182 | 1.6% | 2.0% | +67 | +0.6pp |
| 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 |