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, 70 to 74 year olds was the largest age group among residents in Reynella East, accounting for 7.7% (154 people). This share was higher than Onkaparinga (C) (5.7%). Since 2016, the biggest change was in 65 to 69 year olds, which decreased by 51 people and 2.4 percentage points.
Section overview
Age structure - Five year age groups
Reynella East - Total persons (Usual residence)
This table summarises five year age groups for Reynella East 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 Reynella East, with comparison markers for Onkaparinga (C).
0 to 4
2021 count
78
% of total
3.9%
Change from 2016
-1.6pp
78
3.9%
-1.6pp
5 to 9
2021 count
113
% of total
5.7%
Change from 2016
-0.3pp
113
5.7%
-0.3pp
10 to 14
2021 count
120
% of total
6.0%
Change from 2016
+0.3pp
120
6.0%
+0.3pp
15 to 19
2021 count
107
% of total
5.4%
Change from 2016
-0.1pp
107
5.4%
-0.1pp
20 to 24
2021 count
97
% of total
4.9%
Change from 2016
-1.1pp
97
4.9%
-1.1pp
25 to 29
2021 count
100
% of total
5.0%
Change from 2016
-0.5pp
100
5.0%
-0.5pp
30 to 34
2021 count
116
% of total
5.8%
Change from 2016
-1.1pp
116
5.8%
-1.1pp
35 to 39
2021 count
147
% of total
7.4%
Change from 2016
+2.5pp
147
7.4%
+2.5pp
40 to 44
2021 count
117
% of total
5.9%
Change from 2016
-0.6pp
117
5.9%
-0.6pp
45 to 49
2021 count
132
% of total
6.6%
Change from 2016
+0.9pp
132
6.6%
+0.9pp
50 to 54
2021 count
118
% of total
5.9%
Change from 2016
-0.2pp
118
5.9%
-0.2pp
55 to 59
2021 count
107
% of total
5.4%
Change from 2016
-1.5pp
107
5.4%
-1.5pp
60 to 64
2021 count
129
% of total
6.5%
Change from 2016
-0.2pp
129
6.5%
-0.2pp
65 to 69
2021 count
113
% of total
5.7%
Change from 2016
-2.4pp
113
5.7%
-2.4pp
70 to 74
2021 count
154
% of total
7.7%
Change from 2016
+2.3pp
154
7.7%
+2.3pp
75 to 79
2021 count
101
% of total
5.1%
Change from 2016
+2.6pp
101
5.1%
+2.6pp
80 to 84
2021 count
54
% of total
2.7%
Change from 2016
-0.4pp
54
2.7%
-0.4pp
85 and over
2021 count
77
% of total
3.9%
Change from 2016
+0.6pp
77
3.9%
+0.6pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-33
-1.6pp
5 to 9
-8
-0.3pp
10 to 14
+5
+0.3pp
15 to 19
-3
-0.1pp
20 to 24
-24
-1.1pp
25 to 29
-10
-0.5pp
30 to 34
-24
-1.1pp
35 to 39
+49
+2.5pp
40 to 44
-13
-0.6pp
45 to 49
+18
+0.9pp
50 to 54
-5
-0.2pp
55 to 59
-32
-1.5pp
60 to 64
-5
-0.2pp
65 to 69
-51
-2.4pp
70 to 74
+46
+2.3pp
75 to 79
+50
+2.6pp
80 to 84
-9
-0.4pp
85 and over
+11
+0.6pp
Data table
Five year age groups for Reynella East. 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 | 78 | 3.9% | 5.4% | 111 | 5.5% | 6.2% | -33 | -1.6pp |
| 5 to 9 | 113 | 5.7% | 6.2% | 121 | 6.0% | 6.4% | -8 | -0.3pp |
| 10 to 14 | 120 | 6.0% | 6.2% | 115 | 5.7% | 6.1% | +5 | +0.3pp |
| 15 to 19 | 107 | 5.4% | 5.8% | 110 | 5.5% | 6.2% | -3 | -0.1pp |
| 20 to 24 | 97 | 4.9% | 5.6% | 121 | 6.0% | 6.0% | -24 | -1.1pp |
| 25 to 29 | 100 | 5.0% | 6.0% | 110 | 5.5% | 5.9% | -10 | -0.5pp |
| 30 to 34 | 116 | 5.8% | 6.3% | 140 | 6.9% | 6.5% | -24 | -1.1pp |
| 35 to 39 | 147 | 7.4% | 6.7% | 98 | 4.9% | 6.3% | +49 | +2.5pp |
| 40 to 44 | 117 | 5.9% | 6.1% | 130 | 6.5% | 6.6% | -13 | -0.6pp |
| 45 to 49 | 132 | 6.6% | 6.4% | 114 | 5.7% | 6.9% | +18 | +0.9pp |
| 50 to 54 | 118 | 5.9% | 6.6% | 123 | 6.1% | 6.7% | -5 | -0.2pp |
| 55 to 59 | 107 | 5.4% | 6.5% | 139 | 6.9% | 6.6% | -32 | -1.5pp |
| 60 to 64 | 129 | 6.5% | 6.3% | 134 | 6.7% | 6.3% | -5 | -0.2pp |
| 65 to 69 | 113 | 5.7% | 5.9% | 164 | 8.1% | 6.1% | -51 | -2.4pp |
| 70 to 74 | 154 | 7.7% | 5.7% | 108 | 5.4% | 4.3% | +46 | +2.3pp |
| 75 to 79 | 101 | 5.1% | 3.8% | 51 | 2.5% | 2.8% | +50 | +2.6pp |
| 80 to 84 | 54 | 2.7% | 2.3% | 63 | 3.1% | 2.0% | -9 | -0.4pp |
| 85 and over | 77 | 3.9% | 2.2% | 66 | 3.3% | 2.1% | +11 | +0.6pp |
| Total | 1,990 | 100.0% | 100.0% | 2,015 | 100.0% | 100.0% | -25 | 0.0pp |