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 Docklands, accounting for 19.9% (3,078 people). This share was higher than Melbourne (C) (15.6%). Since 2016, the biggest change was in 30 to 34 year olds, which increased by 1,291 people and 3.6 percentage points.
Section overview
Age structure - Five year age groups
Docklands - Total persons (Usual residence)
This table summarises five year age groups for Docklands in 2021 for persons, with comparison against Melbourne (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Docklands, with comparison markers for Melbourne (C).
0 to 4
2021 count
700
% of total
4.5%
Change from 2016
-0.7pp
700
4.5%
-0.7pp
5 to 9
2021 count
370
% of total
2.4%
Change from 2016
+1.0pp
370
2.4%
+1.0pp
10 to 14
2021 count
148
% of total
1.0%
Change from 2016
+0.3pp
148
1.0%
+0.3pp
15 to 19
2021 count
248
% of total
1.6%
Change from 2016
-2.5pp
248
1.6%
-2.5pp
20 to 24
2021 count
1,560
% of total
10.1%
Change from 2016
-4.2pp
1,560
10.1%
-4.2pp
25 to 29
2021 count
2,949
% of total
19.0%
Change from 2016
-2.6pp
2,949
19.0%
-2.6pp
30 to 34
2021 count
3,078
% of total
19.9%
Change from 2016
+3.6pp
3,078
19.9%
+3.6pp
35 to 39
2021 count
1,862
% of total
12.0%
Change from 2016
+3.3pp
1,862
12.0%
+3.3pp
40 to 44
2021 count
1,019
% of total
6.6%
Change from 2016
+1.2pp
1,019
6.6%
+1.2pp
45 to 49
2021 count
728
% of total
4.7%
Change from 2016
+0.2pp
728
4.7%
+0.2pp
50 to 54
2021 count
677
% of total
4.4%
Change from 2016
-0.8pp
677
4.4%
-0.8pp
55 to 59
2021 count
679
% of total
4.4%
Change from 2016
0.0pp
679
4.4%
0.0pp
60 to 64
2021 count
524
% of total
3.4%
Change from 2016
+0.2pp
524
3.4%
+0.2pp
65 to 69
2021 count
387
% of total
2.5%
Change from 2016
-0.2pp
387
2.5%
-0.2pp
70 to 74
2021 count
307
% of total
2.0%
Change from 2016
+0.7pp
307
2.0%
+0.7pp
75 to 79
2021 count
143
% of total
0.9%
Change from 2016
+0.3pp
143
0.9%
+0.3pp
80 to 84
2021 count
64
% of total
0.4%
Change from 2016
+0.1pp
64
0.4%
+0.1pp
85 and over
2021 count
39
% of total
0.3%
Change from 2016
+0.1pp
39
0.3%
+0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+134
-0.7pp
5 to 9
+221
+1.0pp
10 to 14
+66
+0.3pp
15 to 19
-200
-2.5pp
20 to 24
-10
-4.2pp
25 to 29
+578
-2.6pp
30 to 34
+1,291
+3.6pp
35 to 39
+905
+3.3pp
40 to 44
+432
+1.2pp
45 to 49
+236
+0.2pp
50 to 54
+104
-0.8pp
55 to 59
+195
0.0pp
60 to 64
+174
+0.2pp
65 to 69
+87
-0.2pp
70 to 74
+163
+0.7pp
75 to 79
+79
+0.3pp
80 to 84
+30
+0.1pp
85 and over
+22
+0.1pp
Data table
Five year age groups for Docklands. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Melbourne (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Melbourne (C)% | Count | % | Melbourne (C)% | Count | pp | |
| 0 to 4 | 700 | 4.5% | 2.9% | 566 | 5.2% | 3.2% | +134 | -0.7pp |
| 5 to 9 | 370 | 2.4% | 2.1% | 149 | 1.4% | 1.8% | +221 | +1.0pp |
| 10 to 14 | 148 | 1.0% | 1.7% | 82 | 0.7% | 1.4% | +66 | +0.3pp |
| 15 to 19 | 248 | 1.6% | 4.2% | 448 | 4.1% | 7.8% | -200 | -2.5pp |
| 20 to 24 | 1,560 | 10.1% | 16.8% | 1,570 | 14.3% | 21.9% | -10 | -4.2pp |
| 25 to 29 | 2,949 | 19.0% | 19.8% | 2,371 | 21.6% | 19.3% | +578 | -2.6pp |
| 30 to 34 | 3,078 | 19.9% | 15.6% | 1,787 | 16.3% | 13.4% | +1,291 | +3.6pp |
| 35 to 39 | 1,862 | 12.0% | 9.7% | 957 | 8.7% | 7.2% | +905 | +3.3pp |
| 40 to 44 | 1,019 | 6.6% | 5.8% | 587 | 5.4% | 4.6% | +432 | +1.2pp |
| 45 to 49 | 728 | 4.7% | 4.2% | 492 | 4.5% | 3.8% | +236 | +0.2pp |
| 50 to 54 | 677 | 4.4% | 3.6% | 573 | 5.2% | 3.4% | +104 | -0.8pp |
| 55 to 59 | 679 | 4.4% | 3.3% | 484 | 4.4% | 3.1% | +195 | 0.0pp |
| 60 to 64 | 524 | 3.4% | 2.9% | 350 | 3.2% | 2.7% | +174 | +0.2pp |
| 65 to 69 | 387 | 2.5% | 2.4% | 300 | 2.7% | 2.3% | +87 | -0.2pp |
| 70 to 74 | 307 | 2.0% | 2.0% | 144 | 1.3% | 1.5% | +163 | +0.7pp |
| 75 to 79 | 143 | 0.9% | 1.3% | 64 | 0.6% | 1.0% | +79 | +0.3pp |
| 80 to 84 | 64 | 0.4% | 0.8% | 34 | 0.3% | 0.7% | +30 | +0.1pp |
| 85 and over | 39 | 0.3% | 0.8% | 17 | 0.2% | 0.9% | +22 | +0.1pp |
| Total | 15,495 | 100.0% | 100.0% | 10,964 | 100.0% | 100.0% | +4,531 | 0.0pp |