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 Bellevue Heights, accounting for 6.9% (188 people). This share was higher than Mitcham (C) (3.3%). Since 2016, the biggest change was in 40 to 44 year olds, which increased by 56 people and 1.9 percentage points.
Section overview
Age structure - Five year age groups
Bellevue Heights - Total persons (Usual residence)
This table summarises five year age groups for Bellevue Heights in 2021 for persons, with comparison against Mitcham (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Bellevue Heights, with comparison markers for Mitcham (C).
0 to 4
2021 count
94
% of total
3.5%
Change from 2016
-1.2pp
94
3.5%
-1.2pp
5 to 9
2021 count
162
% of total
6.0%
Change from 2016
+1.0pp
162
6.0%
+1.0pp
10 to 14
2021 count
159
% of total
5.9%
Change from 2016
+1.8pp
159
5.9%
+1.8pp
15 to 19
2021 count
127
% of total
4.7%
Change from 2016
-1.0pp
127
4.7%
-1.0pp
20 to 24
2021 count
146
% of total
5.4%
Change from 2016
+0.9pp
146
5.4%
+0.9pp
25 to 29
2021 count
134
% of total
4.9%
Change from 2016
+0.9pp
134
4.9%
+0.9pp
30 to 34
2021 count
115
% of total
4.2%
Change from 2016
-1.0pp
115
4.2%
-1.0pp
35 to 39
2021 count
157
% of total
5.8%
Change from 2016
+0.3pp
157
5.8%
+0.3pp
40 to 44
2021 count
186
% of total
6.9%
Change from 2016
+1.9pp
186
6.9%
+1.9pp
45 to 49
2021 count
161
% of total
5.9%
Change from 2016
0.0pp
161
5.9%
0.0pp
50 to 54
2021 count
156
% of total
5.8%
Change from 2016
+0.9pp
156
5.8%
+0.9pp
55 to 59
2021 count
129
% of total
4.8%
Change from 2016
-0.8pp
129
4.8%
-0.8pp
60 to 64
2021 count
152
% of total
5.6%
Change from 2016
-1.2pp
152
5.6%
-1.2pp
65 to 69
2021 count
162
% of total
6.0%
Change from 2016
-2.0pp
162
6.0%
-2.0pp
70 to 74
2021 count
178
% of total
6.6%
Change from 2016
-0.3pp
178
6.6%
-0.3pp
75 to 79
2021 count
162
% of total
6.0%
Change from 2016
-1.2pp
162
6.0%
-1.2pp
80 to 84
2021 count
159
% of total
5.9%
Change from 2016
+1.0pp
159
5.9%
+1.0pp
85 and over
2021 count
188
% of total
6.9%
Change from 2016
+0.8pp
188
6.9%
+0.8pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-29
-1.2pp
5 to 9
+32
+1.0pp
10 to 14
+51
+1.8pp
15 to 19
-22
-1.0pp
20 to 24
+29
+0.9pp
25 to 29
+28
+0.9pp
30 to 34
-21
-1.0pp
35 to 39
+13
+0.3pp
40 to 44
+56
+1.9pp
45 to 49
+6
0.0pp
50 to 54
+28
+0.9pp
55 to 59
-18
-0.8pp
60 to 64
-26
-1.2pp
65 to 69
-48
-2.0pp
70 to 74
-2
-0.3pp
75 to 79
-26
-1.2pp
80 to 84
+31
+1.0pp
85 and over
+27
+0.8pp
Data table
Five year age groups for Bellevue Heights. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Mitcham (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Mitcham (C)% | Count | % | Mitcham (C)% | Count | pp | |
| 0 to 4 | 94 | 3.5% | 4.9% | 123 | 4.7% | 5.3% | -29 | -1.2pp |
| 5 to 9 | 162 | 6.0% | 6.0% | 130 | 5.0% | 6.2% | +32 | +1.0pp |
| 10 to 14 | 159 | 5.9% | 6.4% | 108 | 4.1% | 6.1% | +51 | +1.8pp |
| 15 to 19 | 127 | 4.7% | 6.4% | 149 | 5.7% | 6.6% | -22 | -1.0pp |
| 20 to 24 | 146 | 5.4% | 6.0% | 117 | 4.5% | 6.4% | +29 | +0.9pp |
| 25 to 29 | 134 | 4.9% | 5.1% | 106 | 4.0% | 5.1% | +28 | +0.9pp |
| 30 to 34 | 115 | 4.2% | 5.4% | 136 | 5.2% | 5.6% | -21 | -1.0pp |
| 35 to 39 | 157 | 5.8% | 6.2% | 144 | 5.5% | 6.0% | +13 | +0.3pp |
| 40 to 44 | 186 | 6.9% | 6.6% | 130 | 5.0% | 6.9% | +56 | +1.9pp |
| 45 to 49 | 161 | 5.9% | 7.1% | 155 | 5.9% | 7.1% | +6 | 0.0pp |
| 50 to 54 | 156 | 5.8% | 6.7% | 128 | 4.9% | 6.7% | +28 | +0.9pp |
| 55 to 59 | 129 | 4.8% | 6.2% | 147 | 5.6% | 6.7% | -18 | -0.8pp |
| 60 to 64 | 152 | 5.6% | 6.1% | 178 | 6.8% | 5.8% | -26 | -1.2pp |
| 65 to 69 | 162 | 6.0% | 5.4% | 210 | 8.0% | 5.7% | -48 | -2.0pp |
| 70 to 74 | 178 | 6.6% | 5.4% | 180 | 6.9% | 4.6% | -2 | -0.3pp |
| 75 to 79 | 162 | 6.0% | 4.1% | 188 | 7.2% | 3.4% | -26 | -1.2pp |
| 80 to 84 | 159 | 5.9% | 2.8% | 128 | 4.9% | 2.5% | +31 | +1.0pp |
| 85 and over | 188 | 6.9% | 3.3% | 161 | 6.1% | 3.4% | +27 | +0.8pp |
| Total | 2,712 | 100.0% | 100.0% | 2,622 | 100.0% | 100.0% | +90 | 0.0pp |