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, 50 to 54 year olds was the largest age group among residents in Malvern (SA), accounting for 7.6% (207 people). This share was higher than Unley (C) (6.6%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 45 people and 1.4 percentage points.
Section overview
Age structure - Five year age groups
Malvern (SA) - Total persons (Usual residence)
This table summarises five year age groups for Malvern (SA) in 2021 for persons, with comparison against Unley (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Malvern (SA), with comparison markers for Unley (C).
0 to 4
2021 count
98
% of total
3.6%
Change from 2016
-0.4pp
98
3.6%
-0.4pp
5 to 9
2021 count
154
% of total
5.7%
Change from 2016
+0.2pp
154
5.7%
+0.2pp
10 to 14
2021 count
185
% of total
6.8%
Change from 2016
-0.2pp
185
6.8%
-0.2pp
15 to 19
2021 count
192
% of total
7.1%
Change from 2016
-0.4pp
192
7.1%
-0.4pp
20 to 24
2021 count
171
% of total
6.3%
Change from 2016
-0.3pp
171
6.3%
-0.3pp
25 to 29
2021 count
103
% of total
3.8%
Change from 2016
+0.1pp
103
3.8%
+0.1pp
30 to 34
2021 count
105
% of total
3.9%
Change from 2016
+0.5pp
105
3.9%
+0.5pp
35 to 39
2021 count
134
% of total
4.9%
Change from 2016
+0.1pp
134
4.9%
+0.1pp
40 to 44
2021 count
159
% of total
5.9%
Change from 2016
-1.0pp
159
5.9%
-1.0pp
45 to 49
2021 count
197
% of total
7.3%
Change from 2016
-0.2pp
197
7.3%
-0.2pp
50 to 54
2021 count
207
% of total
7.6%
Change from 2016
+0.4pp
207
7.6%
+0.4pp
55 to 59
2021 count
182
% of total
6.7%
Change from 2016
-0.4pp
182
6.7%
-0.4pp
60 to 64
2021 count
180
% of total
6.6%
Change from 2016
-2.0pp
180
6.6%
-2.0pp
65 to 69
2021 count
186
% of total
6.9%
Change from 2016
-0.3pp
186
6.9%
-0.3pp
70 to 74
2021 count
179
% of total
6.6%
Change from 2016
+1.4pp
179
6.6%
+1.4pp
75 to 79
2021 count
105
% of total
3.9%
Change from 2016
+1.0pp
105
3.9%
+1.0pp
80 to 84
2021 count
70
% of total
2.6%
Change from 2016
+0.8pp
70
2.6%
+0.8pp
85 and over
2021 count
106
% of total
3.9%
Change from 2016
-0.3pp
106
3.9%
-0.3pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-4
-0.4pp
5 to 9
+13
+0.2pp
10 to 14
+6
-0.2pp
15 to 19
0
-0.4pp
20 to 24
+1
-0.3pp
25 to 29
+9
+0.1pp
30 to 34
+17
+0.5pp
35 to 39
+10
+0.1pp
40 to 44
-18
-1.0pp
45 to 49
+4
-0.2pp
50 to 54
+21
+0.4pp
55 to 59
0
-0.4pp
60 to 64
-42
-2.0pp
65 to 69
+1
-0.3pp
70 to 74
+45
+1.4pp
75 to 79
+31
+1.0pp
80 to 84
+24
+0.8pp
85 and over
-1
-0.3pp
Data table
Five year age groups for Malvern (SA). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Unley (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Unley (C)% | Count | % | Unley (C)% | Count | pp | |
| 0 to 4 | 98 | 3.6% | 4.3% | 102 | 4.0% | 4.7% | -4 | -0.4pp |
| 5 to 9 | 154 | 5.7% | 5.3% | 141 | 5.5% | 5.7% | +13 | +0.2pp |
| 10 to 14 | 185 | 6.8% | 5.8% | 179 | 7.0% | 5.5% | +6 | -0.2pp |
| 15 to 19 | 192 | 7.1% | 5.4% | 192 | 7.5% | 5.8% | 0 | -0.4pp |
| 20 to 24 | 171 | 6.3% | 6.2% | 170 | 6.6% | 6.8% | +1 | -0.3pp |
| 25 to 29 | 103 | 3.8% | 6.3% | 94 | 3.7% | 7.0% | +9 | +0.1pp |
| 30 to 34 | 105 | 3.9% | 6.1% | 88 | 3.4% | 6.6% | +17 | +0.5pp |
| 35 to 39 | 134 | 4.9% | 6.4% | 124 | 4.8% | 6.4% | +10 | +0.1pp |
| 40 to 44 | 159 | 5.9% | 6.6% | 177 | 6.9% | 6.7% | -18 | -1.0pp |
| 45 to 49 | 197 | 7.3% | 6.6% | 193 | 7.5% | 6.7% | +4 | -0.2pp |
| 50 to 54 | 207 | 7.6% | 6.6% | 186 | 7.2% | 6.4% | +21 | +0.4pp |
| 55 to 59 | 182 | 6.7% | 6.0% | 182 | 7.1% | 6.3% | 0 | -0.4pp |
| 60 to 64 | 180 | 6.6% | 6.1% | 222 | 8.6% | 6.3% | -42 | -2.0pp |
| 65 to 69 | 186 | 6.9% | 5.8% | 185 | 7.2% | 5.6% | +1 | -0.3pp |
| 70 to 74 | 179 | 6.6% | 5.5% | 134 | 5.2% | 3.9% | +45 | +1.4pp |
| 75 to 79 | 105 | 3.9% | 3.8% | 74 | 2.9% | 3.0% | +31 | +1.0pp |
| 80 to 84 | 70 | 2.6% | 2.9% | 46 | 1.8% | 2.3% | +24 | +0.8pp |
| 85 and over | 106 | 3.9% | 4.1% | 107 | 4.2% | 4.3% | -1 | -0.3pp |
| Total | 2,713 | 100.0% | 100.0% | 2,574 | 100.0% | 100.0% | +139 | 0.0pp |