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, 30 to 34 year olds was the largest age group among residents in Collingwood (Vic.), accounting for 19% (1,742 people). This share was higher than Yarra (C) (14.5%). Since 2016, the biggest change was in 30 to 34 year olds, which increased by 1,717 people and 14.9 percentage points.
Section overview
Age structure - Five year age groups
Collingwood (Vic.) - Total persons (Usual residence)
This table summarises five year age groups for Collingwood (Vic.) in 2021 for persons, with comparison against Yarra (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Collingwood (Vic.), with comparison markers for Yarra (C).
0 to 4
2021 count
376
% of total
4.1%
Change from 2016
-0.7pp
376
4.1%
-0.7pp
5 to 9
2021 count
289
% of total
3.1%
Change from 2016
-4.5pp
289
3.1%
-4.5pp
10 to 14
2021 count
232
% of total
2.5%
Change from 2016
-7.4pp
232
2.5%
-7.4pp
15 to 19
2021 count
211
% of total
2.3%
Change from 2016
-4.3pp
211
2.3%
-4.3pp
20 to 24
2021 count
639
% of total
7.0%
Change from 2016
+2.2pp
639
7.0%
+2.2pp
25 to 29
2021 count
1,610
% of total
17.5%
Change from 2016
+15.5pp
1,610
17.5%
+15.5pp
30 to 34
2021 count
1,742
% of total
19.0%
Change from 2016
+14.9pp
1,742
19.0%
+14.9pp
35 to 39
2021 count
1,049
% of total
11.4%
Change from 2016
+6.3pp
1,049
11.4%
+6.3pp
40 to 44
2021 count
694
% of total
7.6%
Change from 2016
+0.7pp
694
7.6%
+0.7pp
45 to 49
2021 count
578
% of total
6.3%
Change from 2016
-3.8pp
578
6.3%
-3.8pp
50 to 54
2021 count
456
% of total
5.0%
Change from 2016
-3.9pp
456
5.0%
-3.9pp
55 to 59
2021 count
343
% of total
3.7%
Change from 2016
-3.2pp
343
3.7%
-3.2pp
60 to 64
2021 count
309
% of total
3.4%
Change from 2016
-2.6pp
309
3.4%
-2.6pp
65 to 69
2021 count
233
% of total
2.5%
Change from 2016
-5.8pp
233
2.5%
-5.8pp
70 to 74
2021 count
161
% of total
1.8%
Change from 2016
-3.2pp
161
1.8%
-3.2pp
75 to 79
2021 count
119
% of total
1.3%
Change from 2016
-1.0pp
119
1.3%
-1.0pp
80 to 84
2021 count
71
% of total
0.8%
Change from 2016
-0.7pp
71
0.8%
-0.7pp
85 and over
2021 count
69
% of total
0.8%
Change from 2016
+0.1pp
69
0.8%
+0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+347
-0.7pp
5 to 9
+243
-4.5pp
10 to 14
+172
-7.4pp
15 to 19
+171
-4.3pp
20 to 24
+610
+2.2pp
25 to 29
+1,598
+15.5pp
30 to 34
+1,717
+14.9pp
35 to 39
+1,018
+6.3pp
40 to 44
+652
+0.7pp
45 to 49
+517
-3.8pp
50 to 54
+402
-3.9pp
55 to 59
+301
-3.2pp
60 to 64
+273
-2.6pp
65 to 69
+183
-5.8pp
70 to 74
+131
-3.2pp
75 to 79
+105
-1.0pp
80 to 84
+62
-0.7pp
85 and over
+65
+0.1pp
Data table
Five year age groups for Collingwood (Vic.). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Yarra (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Yarra (C)% | Count | % | Yarra (C)% | Count | pp | |
| 0 to 4 | 376 | 4.1% | 4.0% | 29 | 4.8% | 4.6% | +347 | -0.7pp |
| 5 to 9 | 289 | 3.1% | 3.4% | 46 | 7.6% | 3.6% | +243 | -4.5pp |
| 10 to 14 | 232 | 2.5% | 3.1% | 60 | 9.9% | 2.9% | +172 | -7.4pp |
| 15 to 19 | 211 | 2.3% | 2.8% | 40 | 6.6% | 3.1% | +171 | -4.3pp |
| 20 to 24 | 639 | 7.0% | 7.3% | 29 | 4.8% | 8.1% | +610 | +2.2pp |
| 25 to 29 | 1,610 | 17.5% | 15.4% | 12 | 2.0% | 16.3% | +1,598 | +15.5pp |
| 30 to 34 | 1,742 | 19.0% | 14.5% | 25 | 4.1% | 14.3% | +1,717 | +14.9pp |
| 35 to 39 | 1,049 | 11.4% | 9.8% | 31 | 5.1% | 9.3% | +1,018 | +6.3pp |
| 40 to 44 | 694 | 7.6% | 7.1% | 42 | 6.9% | 6.9% | +652 | +0.7pp |
| 45 to 49 | 578 | 6.3% | 5.8% | 61 | 10.1% | 6.1% | +517 | -3.8pp |
| 50 to 54 | 456 | 5.0% | 5.5% | 54 | 8.9% | 5.3% | +402 | -3.9pp |
| 55 to 59 | 343 | 3.7% | 4.9% | 42 | 6.9% | 4.8% | +301 | -3.2pp |
| 60 to 64 | 309 | 3.4% | 4.4% | 36 | 6.0% | 4.1% | +273 | -2.6pp |
| 65 to 69 | 233 | 2.5% | 3.6% | 50 | 8.3% | 3.6% | +183 | -5.8pp |
| 70 to 74 | 161 | 1.8% | 3.3% | 30 | 5.0% | 2.5% | +131 | -3.2pp |
| 75 to 79 | 119 | 1.3% | 2.2% | 14 | 2.3% | 1.8% | +105 | -1.0pp |
| 80 to 84 | 71 | 0.8% | 1.4% | 9 | 1.5% | 1.4% | +62 | -0.7pp |
| 85 and over | 69 | 0.8% | 1.4% | 4 | 0.7% | 1.2% | +65 | +0.1pp |
| Total | 9,179 | 100.0% | 100.0% | 605 | 100.0% | 100.0% | +8,574 | 0.0pp |