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 Robe (DC), accounting for 9.5% (146 people). This share was higher than Regional SA (7.7%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 43 people and 2.1 percentage points.
Section overview
Age structure - Five year age groups
Robe (DC) - Total persons (Usual residence)
This table summarises five year age groups for Robe (DC) 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 Robe (DC), with comparison markers for Regional SA.
0 to 4
2021 count
71
% of total
4.6%
Change from 2016
+0.6pp
71
4.6%
+0.6pp
5 to 9
2021 count
66
% of total
4.3%
Change from 2016
-0.8pp
66
4.3%
-0.8pp
10 to 14
2021 count
80
% of total
5.2%
Change from 2016
-0.1pp
80
5.2%
-0.1pp
15 to 19
2021 count
67
% of total
4.3%
Change from 2016
+1.1pp
67
4.3%
+1.1pp
20 to 24
2021 count
53
% of total
3.4%
Change from 2016
-1.5pp
53
3.4%
-1.5pp
25 to 29
2021 count
86
% of total
5.6%
Change from 2016
+0.6pp
86
5.6%
+0.6pp
30 to 34
2021 count
57
% of total
3.7%
Change from 2016
-0.6pp
57
3.7%
-0.6pp
35 to 39
2021 count
77
% of total
5.0%
Change from 2016
-0.6pp
77
5.0%
-0.6pp
40 to 44
2021 count
71
% of total
4.6%
Change from 2016
-1.0pp
71
4.6%
-1.0pp
45 to 49
2021 count
83
% of total
5.4%
Change from 2016
-1.5pp
83
5.4%
-1.5pp
50 to 54
2021 count
103
% of total
6.7%
Change from 2016
-1.6pp
103
6.7%
-1.6pp
55 to 59
2021 count
137
% of total
8.9%
Change from 2016
+0.1pp
137
8.9%
+0.1pp
60 to 64
2021 count
146
% of total
9.5%
Change from 2016
+0.3pp
146
9.5%
+0.3pp
65 to 69
2021 count
139
% of total
9.0%
Change from 2016
+1.3pp
139
9.0%
+1.3pp
70 to 74
2021 count
128
% of total
8.3%
Change from 2016
+2.1pp
128
8.3%
+2.1pp
75 to 79
2021 count
79
% of total
5.1%
Change from 2016
-0.3pp
79
5.1%
-0.3pp
80 to 84
2021 count
60
% of total
3.9%
Change from 2016
+1.1pp
60
3.9%
+1.1pp
85 and over
2021 count
29
% of total
1.9%
Change from 2016
-1.0pp
29
1.9%
-1.0pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+16
+0.6pp
5 to 9
-4
-0.8pp
10 to 14
+7
-0.1pp
15 to 19
+23
+1.1pp
20 to 24
-14
-1.5pp
25 to 29
+17
+0.6pp
30 to 34
-2
-0.6pp
35 to 39
0
-0.6pp
40 to 44
-6
-1.0pp
45 to 49
-12
-1.5pp
50 to 54
-11
-1.6pp
55 to 59
+16
+0.1pp
60 to 64
+19
+0.3pp
65 to 69
+33
+1.3pp
70 to 74
+43
+2.1pp
75 to 79
+4
-0.3pp
80 to 84
+22
+1.1pp
85 and over
-11
-1.0pp
Data table
Five year age groups for Robe (DC). 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 | 71 | 4.6% | 4.9% | 55 | 4.0% | 5.5% | +16 | +0.6pp |
| 5 to 9 | 66 | 4.3% | 5.7% | 70 | 5.1% | 6.1% | -4 | -0.8pp |
| 10 to 14 | 80 | 5.2% | 6.1% | 73 | 5.3% | 6.0% | +7 | -0.1pp |
| 15 to 19 | 67 | 4.3% | 5.3% | 44 | 3.2% | 5.6% | +23 | +1.1pp |
| 20 to 24 | 53 | 3.4% | 4.6% | 67 | 4.9% | 4.8% | -14 | -1.5pp |
| 25 to 29 | 86 | 5.6% | 5.1% | 69 | 5.0% | 5.1% | +17 | +0.6pp |
| 30 to 34 | 57 | 3.7% | 5.4% | 59 | 4.3% | 5.3% | -2 | -0.6pp |
| 35 to 39 | 77 | 5.0% | 5.4% | 77 | 5.6% | 5.2% | 0 | -0.6pp |
| 40 to 44 | 71 | 4.6% | 5.2% | 77 | 5.6% | 5.9% | -6 | -1.0pp |
| 45 to 49 | 83 | 5.4% | 5.8% | 95 | 6.9% | 6.7% | -12 | -1.5pp |
| 50 to 54 | 103 | 6.7% | 6.7% | 114 | 8.3% | 7.1% | -11 | -1.6pp |
| 55 to 59 | 137 | 8.9% | 7.2% | 121 | 8.8% | 7.5% | +16 | +0.1pp |
| 60 to 64 | 146 | 9.5% | 7.7% | 127 | 9.2% | 7.3% | +19 | +0.3pp |
| 65 to 69 | 139 | 9.0% | 7.4% | 106 | 7.7% | 7.1% | +33 | +1.3pp |
| 70 to 74 | 128 | 8.3% | 6.8% | 85 | 6.2% | 5.5% | +43 | +2.1pp |
| 75 to 79 | 79 | 5.1% | 4.8% | 75 | 5.4% | 3.9% | +4 | -0.3pp |
| 80 to 84 | 60 | 3.9% | 3.1% | 38 | 2.8% | 2.6% | +22 | +1.1pp |
| 85 and over | 29 | 1.9% | 2.8% | 40 | 2.9% | 2.7% | -11 | -1.0pp |
| Total | 1,542 | 100.0% | 100.0% | 1,378 | 100.0% | 100.0% | +164 | 0.0pp |