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 Clarendon (SA), accounting for 10.6% (68 people). This share was higher than Onkaparinga (C) (6.3%). Since 2016, the biggest change was in 55 to 59 year olds, which decreased by 26 people and 4.5 percentage points.
Section overview
Age structure - Five year age groups
Clarendon (SA) - Total persons (Usual residence)
This table summarises five year age groups for Clarendon (SA) 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 Clarendon (SA), with comparison markers for Onkaparinga (C).
0 to 4
2021 count
21
% of total
3.3%
Change from 2016
-1.4pp
21
3.3%
-1.4pp
5 to 9
2021 count
30
% of total
4.7%
Change from 2016
-1.4pp
30
4.7%
-1.4pp
10 to 14
2021 count
45
% of total
7.0%
Change from 2016
+1.7pp
45
7.0%
+1.7pp
15 to 19
2021 count
44
% of total
6.8%
Change from 2016
-1.5pp
44
6.8%
-1.5pp
20 to 24
2021 count
41
% of total
6.4%
Change from 2016
+2.8pp
41
6.4%
+2.8pp
25 to 29
2021 count
10
% of total
1.6%
Change from 2016
-1.3pp
10
1.6%
-1.3pp
30 to 34
2021 count
25
% of total
3.9%
Change from 2016
+0.8pp
25
3.9%
+0.8pp
35 to 39
2021 count
28
% of total
4.4%
Change from 2016
-0.3pp
28
4.4%
-0.3pp
40 to 44
2021 count
41
% of total
6.4%
Change from 2016
+1.1pp
41
6.4%
+1.1pp
45 to 49
2021 count
37
% of total
5.8%
Change from 2016
-3.9pp
37
5.8%
-3.9pp
50 to 54
2021 count
56
% of total
8.7%
Change from 2016
-0.4pp
56
8.7%
-0.4pp
55 to 59
2021 count
43
% of total
6.7%
Change from 2016
-4.5pp
43
6.7%
-4.5pp
60 to 64
2021 count
68
% of total
10.6%
Change from 2016
+2.8pp
68
10.6%
+2.8pp
65 to 69
2021 count
29
% of total
4.5%
Change from 2016
-4.4pp
29
4.5%
-4.4pp
70 to 74
2021 count
34
% of total
5.3%
Change from 2016
-1.7pp
34
5.3%
-1.7pp
75 to 79
2021 count
37
% of total
5.8%
Change from 2016
+2.9pp
37
5.8%
+2.9pp
80 to 84
2021 count
8
% of total
1.2%
Change from 2016
+0.2pp
8
1.2%
+0.2pp
85 and over
2021 count
3
% of total
0.5%
Change from 2016
0.0pp
3
0.5%
0.0pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-8
-1.4pp
5 to 9
-8
-1.4pp
10 to 14
+12
+1.7pp
15 to 19
-7
-1.5pp
20 to 24
+19
+2.8pp
25 to 29
-8
-1.3pp
30 to 34
+6
+0.8pp
35 to 39
-1
-0.3pp
40 to 44
+8
+1.1pp
45 to 49
-23
-3.9pp
50 to 54
0
-0.4pp
55 to 59
-26
-4.5pp
60 to 64
+20
+2.8pp
65 to 69
-26
-4.4pp
70 to 74
-9
-1.7pp
75 to 79
+19
+2.9pp
80 to 84
+2
+0.2pp
85 and over
0
0.0pp
Data table
Five year age groups for Clarendon (SA). 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 | 21 | 3.3% | 5.4% | 29 | 4.7% | 6.2% | -8 | -1.4pp |
| 5 to 9 | 30 | 4.7% | 6.2% | 38 | 6.1% | 6.4% | -8 | -1.4pp |
| 10 to 14 | 45 | 7.0% | 6.2% | 33 | 5.3% | 6.1% | +12 | +1.7pp |
| 15 to 19 | 44 | 6.8% | 5.8% | 51 | 8.3% | 6.2% | -7 | -1.5pp |
| 20 to 24 | 41 | 6.4% | 5.6% | 22 | 3.6% | 6.0% | +19 | +2.8pp |
| 25 to 29 | 10 | 1.6% | 6.0% | 18 | 2.9% | 5.9% | -8 | -1.3pp |
| 30 to 34 | 25 | 3.9% | 6.3% | 19 | 3.1% | 6.5% | +6 | +0.8pp |
| 35 to 39 | 28 | 4.4% | 6.7% | 29 | 4.7% | 6.3% | -1 | -0.3pp |
| 40 to 44 | 41 | 6.4% | 6.1% | 33 | 5.3% | 6.6% | +8 | +1.1pp |
| 45 to 49 | 37 | 5.8% | 6.4% | 60 | 9.7% | 6.9% | -23 | -3.9pp |
| 50 to 54 | 56 | 8.7% | 6.6% | 56 | 9.1% | 6.7% | 0 | -0.4pp |
| 55 to 59 | 43 | 6.7% | 6.5% | 69 | 11.2% | 6.6% | -26 | -4.5pp |
| 60 to 64 | 68 | 10.6% | 6.3% | 48 | 7.8% | 6.3% | +20 | +2.8pp |
| 65 to 69 | 29 | 4.5% | 5.9% | 55 | 8.9% | 6.1% | -26 | -4.4pp |
| 70 to 74 | 34 | 5.3% | 5.7% | 43 | 7.0% | 4.3% | -9 | -1.7pp |
| 75 to 79 | 37 | 5.8% | 3.8% | 18 | 2.9% | 2.8% | +19 | +2.9pp |
| 80 to 84 | 8 | 1.2% | 2.3% | 6 | 1.0% | 2.0% | +2 | +0.2pp |
| 85 and over | 3 | 0.5% | 2.2% | 3 | 0.5% | 2.1% | 0 | 0.0pp |
| Total | 643 | 100.0% | 100.0% | 618 | 100.0% | 100.0% | +25 | 0.0pp |