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 Mannum, accounting for 10.4% (303 people). This share was higher than Mid Murray (DC) (9%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 92 people and 2.4 percentage points.
Section overview
Age structure - Five year age groups
Mannum - Total persons (Usual residence)
This table summarises five year age groups for Mannum in 2021 for persons, with comparison against Mid Murray (DC) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Mannum, with comparison markers for Mid Murray (DC).
0 to 4
2021 count
130
% of total
4.5%
Change from 2016
-0.1pp
130
4.5%
-0.1pp
5 to 9
2021 count
144
% of total
4.9%
Change from 2016
0.0pp
144
4.9%
0.0pp
10 to 14
2021 count
137
% of total
4.7%
Change from 2016
+0.4pp
137
4.7%
+0.4pp
15 to 19
2021 count
124
% of total
4.2%
Change from 2016
-0.8pp
124
4.2%
-0.8pp
20 to 24
2021 count
109
% of total
3.7%
Change from 2016
-0.5pp
109
3.7%
-0.5pp
25 to 29
2021 count
102
% of total
3.5%
Change from 2016
-0.4pp
102
3.5%
-0.4pp
30 to 34
2021 count
104
% of total
3.6%
Change from 2016
-1.3pp
104
3.6%
-1.3pp
35 to 39
2021 count
114
% of total
3.9%
Change from 2016
+0.6pp
114
3.9%
+0.6pp
40 to 44
2021 count
111
% of total
3.8%
Change from 2016
-1.0pp
111
3.8%
-1.0pp
45 to 49
2021 count
154
% of total
5.3%
Change from 2016
-1.1pp
154
5.3%
-1.1pp
50 to 54
2021 count
186
% of total
6.4%
Change from 2016
+0.1pp
186
6.4%
+0.1pp
55 to 59
2021 count
222
% of total
7.6%
Change from 2016
+0.9pp
222
7.6%
+0.9pp
60 to 64
2021 count
233
% of total
8.0%
Change from 2016
-0.7pp
233
8.0%
-0.7pp
65 to 69
2021 count
298
% of total
10.2%
Change from 2016
+0.5pp
298
10.2%
+0.5pp
70 to 74
2021 count
303
% of total
10.4%
Change from 2016
+2.4pp
303
10.4%
+2.4pp
75 to 79
2021 count
215
% of total
7.4%
Change from 2016
+1.1pp
215
7.4%
+1.1pp
80 to 84
2021 count
152
% of total
5.2%
Change from 2016
+2.0pp
152
5.2%
+2.0pp
85 and over
2021 count
116
% of total
4.0%
Change from 2016
+0.1pp
116
4.0%
+0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+9
-0.1pp
5 to 9
+15
0.0pp
10 to 14
+23
+0.4pp
15 to 19
-9
-0.8pp
20 to 24
-3
-0.5pp
25 to 29
-2
-0.4pp
30 to 34
-26
-1.3pp
35 to 39
+26
+0.6pp
40 to 44
-17
-1.0pp
45 to 49
-14
-1.1pp
50 to 54
+20
+0.1pp
55 to 59
+44
+0.9pp
60 to 64
+3
-0.7pp
65 to 69
+41
+0.5pp
70 to 74
+92
+2.4pp
75 to 79
+49
+1.1pp
80 to 84
+67
+2.0pp
85 and over
+12
+0.1pp
Data table
Five year age groups for Mannum. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Mid Murray (DC).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Mid Murray (DC)% | Count | % | Mid Murray (DC)% | Count | pp | |
| 0 to 4 | 130 | 4.5% | 3.6% | 121 | 4.6% | 4.1% | +9 | -0.1pp |
| 5 to 9 | 144 | 4.9% | 4.3% | 129 | 4.9% | 4.4% | +15 | 0.0pp |
| 10 to 14 | 137 | 4.7% | 4.9% | 114 | 4.3% | 4.7% | +23 | +0.4pp |
| 15 to 19 | 124 | 4.2% | 4.4% | 133 | 5.0% | 4.8% | -9 | -0.8pp |
| 20 to 24 | 109 | 3.7% | 3.4% | 112 | 4.2% | 4.0% | -3 | -0.5pp |
| 25 to 29 | 102 | 3.5% | 3.8% | 104 | 3.9% | 3.9% | -2 | -0.4pp |
| 30 to 34 | 104 | 3.6% | 4.1% | 130 | 4.9% | 4.5% | -26 | -1.3pp |
| 35 to 39 | 114 | 3.9% | 4.4% | 88 | 3.3% | 4.2% | +26 | +0.6pp |
| 40 to 44 | 111 | 3.8% | 4.6% | 128 | 4.8% | 5.8% | -17 | -1.0pp |
| 45 to 49 | 154 | 5.3% | 5.9% | 168 | 6.4% | 7.0% | -14 | -1.1pp |
| 50 to 54 | 186 | 6.4% | 7.3% | 166 | 6.3% | 8.5% | +20 | +0.1pp |
| 55 to 59 | 222 | 7.6% | 9.2% | 178 | 6.7% | 8.8% | +44 | +0.9pp |
| 60 to 64 | 233 | 8.0% | 9.7% | 230 | 8.7% | 9.4% | +3 | -0.7pp |
| 65 to 69 | 298 | 10.2% | 10.1% | 257 | 9.7% | 9.5% | +41 | +0.5pp |
| 70 to 74 | 303 | 10.4% | 9.0% | 211 | 8.0% | 6.7% | +92 | +2.4pp |
| 75 to 79 | 215 | 7.4% | 5.3% | 166 | 6.3% | 4.8% | +49 | +1.1pp |
| 80 to 84 | 152 | 5.2% | 3.4% | 85 | 3.2% | 2.3% | +67 | +2.0pp |
| 85 and over | 116 | 4.0% | 2.3% | 104 | 3.9% | 2.2% | +12 | +0.1pp |
| Total | 2,919 | 100.0% | 100.0% | 2,644 | 100.0% | 100.0% | +275 | 0.0pp |