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, 25 to 29 year olds was the largest age group among residents in Eyre, accounting for 17.1% (190 people). This share was higher than Playford (C) (8.2%). Since 2016, the biggest change was in 25 to 29 year olds, which increased by 155 people and 7.9 percentage points.
Section overview
Age structure - Five year age groups
Eyre - Total persons (Usual residence)
This table summarises five year age groups for Eyre in 2021 for persons, with comparison against Playford (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Eyre, with comparison markers for Playford (C).
0 to 4
2021 count
143
% of total
12.8%
Change from 2016
+4.0pp
143
12.8%
+4.0pp
5 to 9
2021 count
80
% of total
7.2%
Change from 2016
+2.7pp
80
7.2%
+2.7pp
10 to 14
2021 count
68
% of total
6.1%
Change from 2016
+4.2pp
68
6.1%
+4.2pp
15 to 19
2021 count
32
% of total
2.9%
Change from 2016
+0.4pp
32
2.9%
+0.4pp
20 to 24
2021 count
92
% of total
8.3%
Change from 2016
-1.8pp
92
8.3%
-1.8pp
25 to 29
2021 count
190
% of total
17.1%
Change from 2016
+7.9pp
190
17.1%
+7.9pp
30 to 34
2021 count
140
% of total
12.6%
Change from 2016
+5.3pp
140
12.6%
+5.3pp
35 to 39
2021 count
86
% of total
7.7%
Change from 2016
+3.0pp
86
7.7%
+3.0pp
40 to 44
2021 count
53
% of total
4.8%
Change from 2016
+3.2pp
53
4.8%
+3.2pp
45 to 49
2021 count
52
% of total
4.7%
Change from 2016
+1.1pp
52
4.7%
+1.1pp
50 to 54
2021 count
40
% of total
3.6%
Change from 2016
-1.0pp
40
3.6%
-1.0pp
55 to 59
2021 count
46
% of total
4.1%
Change from 2016
-1.0pp
46
4.1%
-1.0pp
60 to 64
2021 count
32
% of total
2.9%
Change from 2016
-1.3pp
32
2.9%
-1.3pp
65 to 69
2021 count
29
% of total
2.6%
Change from 2016
-3.9pp
29
2.6%
-3.9pp
70 to 74
2021 count
5
% of total
0.4%
Change from 2016
-7.9pp
5
0.4%
-7.9pp
75 to 79
2021 count
10
% of total
0.9%
Change from 2016
-8.7pp
10
0.9%
-8.7pp
80 to 84
2021 count
8
% of total
0.7%
Change from 2016
-3.4pp
8
0.7%
-3.4pp
85 and over
2021 count
3
% of total
0.3%
Change from 2016
-1.4pp
3
0.3%
-1.4pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+109
+4.0pp
5 to 9
+63
+2.7pp
10 to 14
+61
+4.2pp
15 to 19
+23
+0.4pp
20 to 24
+54
-1.8pp
25 to 29
+155
+7.9pp
30 to 34
+112
+5.3pp
35 to 39
+68
+3.0pp
40 to 44
+47
+3.2pp
45 to 49
+38
+1.1pp
50 to 54
+22
-1.0pp
55 to 59
+27
-1.0pp
60 to 64
+16
-1.3pp
65 to 69
+4
-3.9pp
70 to 74
-27
-7.9pp
75 to 79
-26
-8.7pp
80 to 84
-8
-3.4pp
85 and over
-4
-1.4pp
Data table
Five year age groups for Eyre. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Playford (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Playford (C)% | Count | % | Playford (C)% | Count | pp | |
| 0 to 4 | 143 | 12.8% | 7.5% | 34 | 8.8% | 8.6% | +109 | +4.0pp |
| 5 to 9 | 80 | 7.2% | 8.0% | 17 | 4.5% | 7.9% | +63 | +2.7pp |
| 10 to 14 | 68 | 6.1% | 7.4% | 7 | 1.9% | 6.6% | +61 | +4.2pp |
| 15 to 19 | 32 | 2.9% | 6.2% | 9 | 2.5% | 6.7% | +23 | +0.4pp |
| 20 to 24 | 92 | 8.3% | 7.0% | 38 | 10.1% | 7.7% | +54 | -1.8pp |
| 25 to 29 | 190 | 17.1% | 8.2% | 35 | 9.2% | 7.9% | +155 | +7.9pp |
| 30 to 34 | 140 | 12.6% | 7.7% | 28 | 7.3% | 7.4% | +112 | +5.3pp |
| 35 to 39 | 86 | 7.7% | 7.1% | 18 | 4.7% | 6.1% | +68 | +3.0pp |
| 40 to 44 | 53 | 4.8% | 5.7% | 6 | 1.6% | 5.9% | +47 | +3.2pp |
| 45 to 49 | 52 | 4.7% | 5.7% | 14 | 3.6% | 6.2% | +38 | +1.1pp |
| 50 to 54 | 40 | 3.6% | 5.7% | 18 | 4.6% | 6.5% | +22 | -1.0pp |
| 55 to 59 | 46 | 4.1% | 5.8% | 19 | 5.1% | 5.8% | +27 | -1.0pp |
| 60 to 64 | 32 | 2.9% | 5.1% | 16 | 4.2% | 4.5% | +16 | -1.3pp |
| 65 to 69 | 29 | 2.6% | 4.0% | 25 | 6.5% | 3.9% | +4 | -3.9pp |
| 70 to 74 | 5 | 0.4% | 3.3% | 32 | 8.3% | 2.8% | -27 | -7.9pp |
| 75 to 79 | 10 | 0.9% | 2.2% | 36 | 9.6% | 2.3% | -26 | -8.7pp |
| 80 to 84 | 8 | 0.7% | 1.7% | 16 | 4.1% | 1.7% | -8 | -3.4pp |
| 85 and over | 3 | 0.3% | 1.6% | 7 | 1.7% | 1.5% | -4 | -1.4pp |
| Total | 1,113 | 100.0% | 100.0% | 381 | 100.0% | 100.0% | +732 | 0.0pp |