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 Southern Mallee (DC), accounting for 7.8% (155 people). This share was higher than Regional SA (7.2%). Since 2016, the biggest change was in 15 to 19 year olds, which increased by 24 people and 1.4 percentage points.
Section overview
Age structure - Five year age groups
Southern Mallee (DC) - Total persons (Usual residence)
This table summarises five year age groups for Southern Mallee (DC) in 2021 for persons, with comparison against Regional SA and change since 2016.
Chart view
Age structure - Five year age groups snapshot
2021 distribution by category for Southern Mallee (DC), with comparison markers for Regional SA.
0 to 4
2021 count
93
% of total
4.7%
Change from 2016
-0.9pp
93
4.7%
-0.9pp
5 to 9
2021 count
100
% of total
5.1%
Change from 2016
-0.6pp
100
5.1%
-0.6pp
10 to 14
2021 count
132
% of total
6.7%
Change from 2016
+0.5pp
132
6.7%
+0.5pp
15 to 19
2021 count
112
% of total
5.7%
Change from 2016
+1.4pp
112
5.7%
+1.4pp
20 to 24
2021 count
80
% of total
4.0%
Change from 2016
+0.5pp
80
4.0%
+0.5pp
25 to 29
2021 count
100
% of total
5.1%
Change from 2016
-0.1pp
100
5.1%
-0.1pp
30 to 34
2021 count
127
% of total
6.4%
Change from 2016
+0.5pp
127
6.4%
+0.5pp
35 to 39
2021 count
115
% of total
5.8%
Change from 2016
-0.2pp
115
5.8%
-0.2pp
40 to 44
2021 count
124
% of total
6.3%
Change from 2016
+0.6pp
124
6.3%
+0.6pp
45 to 49
2021 count
118
% of total
6.0%
Change from 2016
-0.6pp
118
6.0%
-0.6pp
50 to 54
2021 count
126
% of total
6.4%
Change from 2016
-1.0pp
126
6.4%
-1.0pp
55 to 59
2021 count
155
% of total
7.8%
Change from 2016
+0.3pp
155
7.8%
+0.3pp
60 to 64
2021 count
137
% of total
6.9%
Change from 2016
0.0pp
137
6.9%
0.0pp
65 to 69
2021 count
130
% of total
6.6%
Change from 2016
-0.8pp
130
6.6%
-0.8pp
70 to 74
2021 count
126
% of total
6.4%
Change from 2016
+0.9pp
126
6.4%
+0.9pp
75 to 79
2021 count
83
% of total
4.2%
Change from 2016
+0.1pp
83
4.2%
+0.1pp
80 to 84
2021 count
61
% of total
3.1%
Change from 2016
-0.2pp
61
3.1%
-0.2pp
85 and over
2021 count
64
% of total
3.2%
Change from 2016
+0.3pp
64
3.2%
+0.3pp
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-21
-0.9pp
5 to 9
-16
-0.6pp
10 to 14
+7
+0.5pp
15 to 19
+24
+1.4pp
20 to 24
+9
+0.5pp
25 to 29
-6
-0.1pp
30 to 34
+8
+0.5pp
35 to 39
-7
-0.2pp
40 to 44
+9
+0.6pp
45 to 49
-15
-0.6pp
50 to 54
-23
-1.0pp
55 to 59
+3
+0.3pp
60 to 64
-2
0.0pp
65 to 69
-19
-0.8pp
70 to 74
+15
+0.9pp
75 to 79
0
+0.1pp
80 to 84
-5
-0.2pp
85 and over
+6
+0.3pp
Data table
Five year age groups for Southern Mallee (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 | 93 | 4.7% | 4.9% | 114 | 5.6% | 5.5% | -21 | -0.9pp |
| 5 to 9 | 100 | 5.1% | 5.7% | 116 | 5.7% | 6.1% | -16 | -0.6pp |
| 10 to 14 | 132 | 6.7% | 6.1% | 125 | 6.2% | 6.0% | +7 | +0.5pp |
| 15 to 19 | 112 | 5.7% | 5.3% | 88 | 4.3% | 5.6% | +24 | +1.4pp |
| 20 to 24 | 80 | 4.0% | 4.6% | 71 | 3.5% | 4.8% | +9 | +0.5pp |
| 25 to 29 | 100 | 5.1% | 5.1% | 106 | 5.2% | 5.1% | -6 | -0.1pp |
| 30 to 34 | 127 | 6.4% | 5.4% | 119 | 5.9% | 5.3% | +8 | +0.5pp |
| 35 to 39 | 115 | 5.8% | 5.4% | 122 | 6.0% | 5.2% | -7 | -0.2pp |
| 40 to 44 | 124 | 6.3% | 5.2% | 115 | 5.7% | 5.9% | +9 | +0.6pp |
| 45 to 49 | 118 | 6.0% | 5.8% | 133 | 6.6% | 6.7% | -15 | -0.6pp |
| 50 to 54 | 126 | 6.4% | 6.7% | 149 | 7.4% | 7.1% | -23 | -1.0pp |
| 55 to 59 | 155 | 7.8% | 7.2% | 152 | 7.5% | 7.5% | +3 | +0.3pp |
| 60 to 64 | 137 | 6.9% | 7.7% | 139 | 6.9% | 7.3% | -2 | 0.0pp |
| 65 to 69 | 130 | 6.6% | 7.4% | 149 | 7.4% | 7.1% | -19 | -0.8pp |
| 70 to 74 | 126 | 6.4% | 6.8% | 111 | 5.5% | 5.5% | +15 | +0.9pp |
| 75 to 79 | 83 | 4.2% | 4.8% | 83 | 4.1% | 3.9% | 0 | +0.1pp |
| 80 to 84 | 61 | 3.1% | 3.1% | 66 | 3.3% | 2.6% | -5 | -0.2pp |
| 85 and over | 64 | 3.2% | 2.8% | 58 | 2.9% | 2.7% | +6 | +0.3pp |
| Total | 1,979 | 100.0% | 100.0% | 2,027 | 100.0% | 100.0% | -48 | 0.0pp |