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 Bellfield (Banyule - Vic.), accounting for 10.4% (207 people). This share was higher than Banyule (C) (7%). Since 2016, the biggest change was in 35 to 39 year olds, which increased by 44 people and 1.4 percentage points.
Section overview
Age structure - Five year age groups
Bellfield (Banyule - Vic.) - Total persons (Usual residence)
This table summarises five year age groups for Bellfield (Banyule - Vic.) in 2021 for persons, with comparison against Banyule (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Bellfield (Banyule - Vic.), with comparison markers for Banyule (C).
0 to 4
2021 count
135
% of total
6.8%
Change from 2016
-0.9pp
135
6.8%
-0.9pp
5 to 9
2021 count
113
% of total
5.7%
Change from 2016
+1.1pp
113
5.7%
+1.1pp
10 to 14
2021 count
96
% of total
4.8%
Change from 2016
-0.1pp
96
4.8%
-0.1pp
15 to 19
2021 count
106
% of total
5.3%
Change from 2016
+0.4pp
106
5.3%
+0.4pp
20 to 24
2021 count
119
% of total
6.0%
Change from 2016
-1.5pp
119
6.0%
-1.5pp
25 to 29
2021 count
186
% of total
9.3%
Change from 2016
-0.2pp
186
9.3%
-0.2pp
30 to 34
2021 count
207
% of total
10.4%
Change from 2016
-0.2pp
207
10.4%
-0.2pp
35 to 39
2021 count
184
% of total
9.2%
Change from 2016
+1.4pp
184
9.2%
+1.4pp
40 to 44
2021 count
147
% of total
7.4%
Change from 2016
+1.2pp
147
7.4%
+1.2pp
45 to 49
2021 count
112
% of total
5.6%
Change from 2016
+0.1pp
112
5.6%
+0.1pp
50 to 54
2021 count
107
% of total
5.4%
Change from 2016
-0.8pp
107
5.4%
-0.8pp
55 to 59
2021 count
118
% of total
5.9%
Change from 2016
-0.3pp
118
5.9%
-0.3pp
60 to 64
2021 count
102
% of total
5.1%
Change from 2016
+0.4pp
102
5.1%
+0.4pp
65 to 69
2021 count
93
% of total
4.7%
Change from 2016
+0.4pp
93
4.7%
+0.4pp
70 to 74
2021 count
79
% of total
4.0%
Change from 2016
+1.7pp
79
4.0%
+1.7pp
75 to 79
2021 count
39
% of total
2.0%
Change from 2016
-0.7pp
39
2.0%
-0.7pp
80 to 84
2021 count
33
% of total
1.7%
Change from 2016
0.0pp
33
1.7%
0.0pp
85 and over
2021 count
32
% of total
1.6%
Change from 2016
-0.6pp
32
1.6%
-0.6pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-3
-0.9pp
5 to 9
+30
+1.1pp
10 to 14
+8
-0.1pp
15 to 19
+19
+0.4pp
20 to 24
-15
-1.5pp
25 to 29
+15
-0.2pp
30 to 34
+17
-0.2pp
35 to 39
+44
+1.4pp
40 to 44
+36
+1.2pp
45 to 49
+13
+0.1pp
50 to 54
-5
-0.8pp
55 to 59
+6
-0.3pp
60 to 64
+18
+0.4pp
65 to 69
+16
+0.4pp
70 to 74
+38
+1.7pp
75 to 79
-9
-0.7pp
80 to 84
+2
0.0pp
85 and over
-7
-0.6pp
Data table
Five year age groups for Bellfield (Banyule - Vic.). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Banyule (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Banyule (C)% | Count | % | Banyule (C)% | Count | pp | |
| 0 to 4 | 135 | 6.8% | 5.6% | 138 | 7.7% | 6.4% | -3 | -0.9pp |
| 5 to 9 | 113 | 5.7% | 6.2% | 83 | 4.6% | 6.2% | +30 | +1.1pp |
| 10 to 14 | 96 | 4.8% | 6.0% | 88 | 4.9% | 5.5% | +8 | -0.1pp |
| 15 to 19 | 106 | 5.3% | 5.4% | 87 | 4.9% | 5.6% | +19 | +0.4pp |
| 20 to 24 | 119 | 6.0% | 5.5% | 134 | 7.5% | 6.1% | -15 | -1.5pp |
| 25 to 29 | 186 | 9.3% | 5.9% | 171 | 9.5% | 6.5% | +15 | -0.2pp |
| 30 to 34 | 207 | 10.4% | 7.0% | 190 | 10.6% | 6.9% | +17 | -0.2pp |
| 35 to 39 | 184 | 9.2% | 7.3% | 140 | 7.8% | 7.1% | +44 | +1.4pp |
| 40 to 44 | 147 | 7.4% | 7.1% | 111 | 6.2% | 7.2% | +36 | +1.2pp |
| 45 to 49 | 112 | 5.6% | 6.9% | 99 | 5.5% | 6.9% | +13 | +0.1pp |
| 50 to 54 | 107 | 5.4% | 6.5% | 112 | 6.2% | 6.4% | -5 | -0.8pp |
| 55 to 59 | 118 | 5.9% | 5.9% | 112 | 6.2% | 6.3% | +6 | -0.3pp |
| 60 to 64 | 102 | 5.1% | 5.8% | 84 | 4.7% | 5.6% | +18 | +0.4pp |
| 65 to 69 | 93 | 4.7% | 5.2% | 77 | 4.3% | 5.4% | +16 | +0.4pp |
| 70 to 74 | 79 | 4.0% | 4.9% | 41 | 2.3% | 4.1% | +38 | +1.7pp |
| 75 to 79 | 39 | 2.0% | 3.6% | 48 | 2.7% | 3.0% | -9 | -0.7pp |
| 80 to 84 | 33 | 1.7% | 2.5% | 31 | 1.7% | 2.3% | +2 | 0.0pp |
| 85 and over | 32 | 1.6% | 2.7% | 39 | 2.2% | 2.7% | -7 | -0.6pp |
| Total | 1,996 | 100.0% | 100.0% | 1,793 | 100.0% | 100.0% | +203 | 0.0pp |