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, 85 and over year olds was the largest age group among residents in Myrtle Bank (SA), accounting for 13.3% (421 people). This share was higher than Unley (C) (4.1%). Since 2016, the biggest change was in 80 to 84 year olds, which increased by 84 people and 2.3 percentage points.
Section overview
Age structure - Five year age groups
Myrtle Bank (SA) - Total persons (Usual residence)
This table summarises five year age groups for Myrtle Bank (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 Myrtle Bank (SA), with comparison markers for Unley (C).
0 to 4
2021 count
112
% of total
3.5%
Change from 2016
0.0pp
112
3.5%
0.0pp
5 to 9
2021 count
147
% of total
4.7%
Change from 2016
-0.2pp
147
4.7%
-0.2pp
10 to 14
2021 count
172
% of total
5.4%
Change from 2016
+0.4pp
172
5.4%
+0.4pp
15 to 19
2021 count
157
% of total
5.0%
Change from 2016
-1.3pp
157
5.0%
-1.3pp
20 to 24
2021 count
141
% of total
4.5%
Change from 2016
-0.5pp
141
4.5%
-0.5pp
25 to 29
2021 count
109
% of total
3.5%
Change from 2016
-1.0pp
109
3.5%
-1.0pp
30 to 34
2021 count
105
% of total
3.3%
Change from 2016
+0.4pp
105
3.3%
+0.4pp
35 to 39
2021 count
145
% of total
4.6%
Change from 2016
+1.0pp
145
4.6%
+1.0pp
40 to 44
2021 count
164
% of total
5.2%
Change from 2016
-0.8pp
164
5.2%
-0.8pp
45 to 49
2021 count
178
% of total
5.6%
Change from 2016
-0.7pp
178
5.6%
-0.7pp
50 to 54
2021 count
208
% of total
6.6%
Change from 2016
+1.7pp
208
6.6%
+1.7pp
55 to 59
2021 count
155
% of total
4.9%
Change from 2016
-0.8pp
155
4.9%
-0.8pp
60 to 64
2021 count
165
% of total
5.2%
Change from 2016
-0.9pp
165
5.2%
-0.9pp
65 to 69
2021 count
184
% of total
5.8%
Change from 2016
+0.7pp
184
5.8%
+0.7pp
70 to 74
2021 count
203
% of total
6.4%
Change from 2016
+1.8pp
203
6.4%
+1.8pp
75 to 79
2021 count
185
% of total
5.9%
Change from 2016
+0.8pp
185
5.9%
+0.8pp
80 to 84
2021 count
226
% of total
7.2%
Change from 2016
+2.3pp
226
7.2%
+2.3pp
85 and over
2021 count
421
% of total
13.3%
Change from 2016
-1.4pp
421
13.3%
-1.4pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+12
0.0pp
5 to 9
+5
-0.2pp
10 to 14
+27
+0.4pp
15 to 19
-25
-1.3pp
20 to 24
-2
-0.5pp
25 to 29
-22
-1.0pp
30 to 34
+22
+0.4pp
35 to 39
+42
+1.0pp
40 to 44
-9
-0.8pp
45 to 49
-4
-0.7pp
50 to 54
+66
+1.7pp
55 to 59
-9
-0.8pp
60 to 64
-10
-0.9pp
65 to 69
+36
+0.7pp
70 to 74
+69
+1.8pp
75 to 79
+37
+0.8pp
80 to 84
+84
+2.3pp
85 and over
-4
-1.4pp
Data table
Five year age groups for Myrtle Bank (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 | 112 | 3.5% | 4.3% | 100 | 3.5% | 4.7% | +12 | 0.0pp |
| 5 to 9 | 147 | 4.7% | 5.3% | 142 | 4.9% | 5.7% | +5 | -0.2pp |
| 10 to 14 | 172 | 5.4% | 5.8% | 145 | 5.0% | 5.5% | +27 | +0.4pp |
| 15 to 19 | 157 | 5.0% | 5.4% | 182 | 6.3% | 5.8% | -25 | -1.3pp |
| 20 to 24 | 141 | 4.5% | 6.2% | 143 | 5.0% | 6.8% | -2 | -0.5pp |
| 25 to 29 | 109 | 3.5% | 6.3% | 131 | 4.5% | 7.0% | -22 | -1.0pp |
| 30 to 34 | 105 | 3.3% | 6.1% | 83 | 2.9% | 6.6% | +22 | +0.4pp |
| 35 to 39 | 145 | 4.6% | 6.4% | 103 | 3.6% | 6.4% | +42 | +1.0pp |
| 40 to 44 | 164 | 5.2% | 6.6% | 173 | 6.0% | 6.7% | -9 | -0.8pp |
| 45 to 49 | 178 | 5.6% | 6.6% | 182 | 6.3% | 6.7% | -4 | -0.7pp |
| 50 to 54 | 208 | 6.6% | 6.6% | 142 | 4.9% | 6.4% | +66 | +1.7pp |
| 55 to 59 | 155 | 4.9% | 6.0% | 164 | 5.7% | 6.3% | -9 | -0.8pp |
| 60 to 64 | 165 | 5.2% | 6.1% | 175 | 6.1% | 6.3% | -10 | -0.9pp |
| 65 to 69 | 184 | 5.8% | 5.8% | 148 | 5.1% | 5.6% | +36 | +0.7pp |
| 70 to 74 | 203 | 6.4% | 5.5% | 134 | 4.6% | 3.9% | +69 | +1.8pp |
| 75 to 79 | 185 | 5.9% | 3.8% | 148 | 5.1% | 3.0% | +37 | +0.8pp |
| 80 to 84 | 226 | 7.2% | 2.9% | 142 | 4.9% | 2.3% | +84 | +2.3pp |
| 85 and over | 421 | 13.3% | 4.1% | 425 | 14.7% | 4.3% | -4 | -1.4pp |
| Total | 3,158 | 100.0% | 100.0% | 2,883 | 100.0% | 100.0% | +275 | 0.0pp |