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, 55 to 59 year olds was the largest age group among residents in Adelaide Plains, accounting for 8.3% (813 people). This share was higher than Regional SA (7.2%).
Section overview
Age structure - Five year age groups
Adelaide Plains - Total persons (Usual residence)
This table summarises five year age groups for Adelaide Plains in 2021 for persons, with comparison against Regional SA and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Adelaide Plains, with comparison markers for Regional SA.
0 to 4
2021 count
565
% of total
5.7%
Change from 2016
-
565
5.7%
-
5 to 9
2021 count
617
% of total
6.3%
Change from 2016
-
617
6.3%
-
10 to 14
2021 count
660
% of total
6.7%
Change from 2016
-
660
6.7%
-
15 to 19
2021 count
640
% of total
6.5%
Change from 2016
-
640
6.5%
-
20 to 24
2021 count
522
% of total
5.3%
Change from 2016
-
522
5.3%
-
25 to 29
2021 count
611
% of total
6.2%
Change from 2016
-
611
6.2%
-
30 to 34
2021 count
647
% of total
6.6%
Change from 2016
-
647
6.6%
-
35 to 39
2021 count
614
% of total
6.2%
Change from 2016
-
614
6.2%
-
40 to 44
2021 count
578
% of total
5.9%
Change from 2016
-
578
5.9%
-
45 to 49
2021 count
683
% of total
6.9%
Change from 2016
-
683
6.9%
-
50 to 54
2021 count
799
% of total
8.1%
Change from 2016
-
799
8.1%
-
55 to 59
2021 count
813
% of total
8.3%
Change from 2016
-
813
8.3%
-
60 to 64
2021 count
676
% of total
6.9%
Change from 2016
-
676
6.9%
-
65 to 69
2021 count
496
% of total
5.0%
Change from 2016
-
496
5.0%
-
70 to 74
2021 count
411
% of total
4.2%
Change from 2016
-
411
4.2%
-
75 to 79
2021 count
280
% of total
2.8%
Change from 2016
-
280
2.8%
-
80 to 84
2021 count
127
% of total
1.3%
Change from 2016
-
127
1.3%
-
85 and over
2021 count
95
% of total
1.0%
Change from 2016
-
95
1.0%
-
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
Data table
Five year age groups for Adelaide Plains. Age structure - Five year 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 | |
| 0 to 4 | 565 | 5.7% | 4.9% | - | - | 5.5% | - | - |
| 5 to 9 | 617 | 6.3% | 5.7% | - | - | 6.1% | - | - |
| 10 to 14 | 660 | 6.7% | 6.1% | - | - | 6.0% | - | - |
| 15 to 19 | 640 | 6.5% | 5.3% | - | - | 5.6% | - | - |
| 20 to 24 | 522 | 5.3% | 4.6% | - | - | 4.8% | - | - |
| 25 to 29 | 611 | 6.2% | 5.1% | - | - | 5.1% | - | - |
| 30 to 34 | 647 | 6.6% | 5.4% | - | - | 5.3% | - | - |
| 35 to 39 | 614 | 6.2% | 5.4% | - | - | 5.2% | - | - |
| 40 to 44 | 578 | 5.9% | 5.2% | - | - | 5.9% | - | - |
| 45 to 49 | 683 | 6.9% | 5.8% | - | - | 6.7% | - | - |
| 50 to 54 | 799 | 8.1% | 6.7% | - | - | 7.1% | - | - |
| 55 to 59 | 813 | 8.3% | 7.2% | - | - | 7.5% | - | - |
| 60 to 64 | 676 | 6.9% | 7.7% | - | - | 7.3% | - | - |
| 65 to 69 | 496 | 5.0% | 7.4% | - | - | 7.1% | - | - |
| 70 to 74 | 411 | 4.2% | 6.8% | - | - | 5.5% | - | - |
| 75 to 79 | 280 | 2.8% | 4.8% | - | - | 3.9% | - | - |
| 80 to 84 | 127 | 1.3% | 3.1% | - | - | 2.6% | - | - |
| 85 and over | 95 | 1.0% | 2.8% | - | - | 2.7% | - | - |
| Total | 9,835 | 100.0% | 100.0% | - | - | 100.0% | - | - |