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, 50 to 54 year olds was the largest age group among residents in Warrandyte South, accounting for 11.5% (77 people). This share was higher than Manningham (C) (6.9%). Since 2016, the biggest change was in 45 to 49 year olds, which decreased by 31 people and 4.6 percentage points.
Section overview
Age structure - Five year age groups
Warrandyte South - Total persons (Usual residence)
This table summarises five year age groups for Warrandyte South in 2021 for persons, with comparison against Manningham (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Warrandyte South, with comparison markers for Manningham (C).
0 to 4
2021 count
12
% of total
1.8%
Change from 2016
-1.2pp
12
1.8%
-1.2pp
5 to 9
2021 count
31
% of total
4.6%
Change from 2016
-2.6pp
31
4.6%
-2.6pp
10 to 14
2021 count
67
% of total
10.0%
Change from 2016
0.0pp
67
10.0%
0.0pp
15 to 19
2021 count
68
% of total
10.1%
Change from 2016
+0.9pp
68
10.1%
+0.9pp
20 to 24
2021 count
53
% of total
7.9%
Change from 2016
-0.6pp
53
7.9%
-0.6pp
25 to 29
2021 count
32
% of total
4.8%
Change from 2016
+2.6pp
32
4.8%
+2.6pp
30 to 34
2021 count
25
% of total
3.7%
Change from 2016
+1.6pp
25
3.7%
+1.6pp
35 to 39
2021 count
23
% of total
3.4%
Change from 2016
-0.5pp
23
3.4%
-0.5pp
40 to 44
2021 count
35
% of total
5.2%
Change from 2016
-1.2pp
35
5.2%
-1.2pp
45 to 49
2021 count
49
% of total
7.3%
Change from 2016
-4.6pp
49
7.3%
-4.6pp
50 to 54
2021 count
77
% of total
11.5%
Change from 2016
+3.0pp
77
11.5%
+3.0pp
55 to 59
2021 count
56
% of total
8.3%
Change from 2016
+2.5pp
56
8.3%
+2.5pp
60 to 64
2021 count
38
% of total
5.7%
Change from 2016
+0.9pp
38
5.7%
+0.9pp
65 to 69
2021 count
38
% of total
5.7%
Change from 2016
-0.3pp
38
5.7%
-0.3pp
70 to 74
2021 count
36
% of total
5.4%
Change from 2016
+0.5pp
36
5.4%
+0.5pp
75 to 79
2021 count
21
% of total
3.1%
Change from 2016
+1.3pp
21
3.1%
+1.3pp
80 to 84
2021 count
12
% of total
1.8%
Change from 2016
+1.2pp
12
1.8%
+1.2pp
85 and over
2021 count
4
% of total
0.6%
Change from 2016
+0.2pp
4
0.6%
+0.2pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-8
-1.2pp
5 to 9
-17
-2.6pp
10 to 14
0
0.0pp
15 to 19
+6
+0.9pp
20 to 24
-4
-0.6pp
25 to 29
+17
+2.6pp
30 to 34
+11
+1.6pp
35 to 39
-3
-0.5pp
40 to 44
-8
-1.2pp
45 to 49
-31
-4.6pp
50 to 54
+20
+3.0pp
55 to 59
+17
+2.5pp
60 to 64
+6
+0.9pp
65 to 69
-2
-0.3pp
70 to 74
+3
+0.5pp
75 to 79
+9
+1.3pp
80 to 84
+8
+1.2pp
85 and over
+1
+0.2pp
Data table
Five year age groups for Warrandyte South. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Manningham (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Manningham (C)% | Count | % | Manningham (C)% | Count | pp | |
| 0 to 4 | 12 | 1.8% | 4.5% | 20 | 3.0% | 4.8% | -8 | -1.2pp |
| 5 to 9 | 31 | 4.6% | 5.8% | 48 | 7.2% | 5.6% | -17 | -2.6pp |
| 10 to 14 | 67 | 10.0% | 5.9% | 67 | 10.0% | 5.7% | 0 | 0.0pp |
| 15 to 19 | 68 | 10.1% | 5.9% | 62 | 9.2% | 6.5% | +6 | +0.9pp |
| 20 to 24 | 53 | 7.9% | 5.9% | 57 | 8.5% | 6.2% | -4 | -0.6pp |
| 25 to 29 | 32 | 4.8% | 5.1% | 15 | 2.2% | 5.7% | +17 | +2.6pp |
| 30 to 34 | 25 | 3.7% | 5.7% | 14 | 2.1% | 5.4% | +11 | +1.6pp |
| 35 to 39 | 23 | 3.4% | 6.4% | 26 | 3.9% | 5.7% | -3 | -0.5pp |
| 40 to 44 | 35 | 5.2% | 6.4% | 43 | 6.4% | 6.3% | -8 | -1.2pp |
| 45 to 49 | 49 | 7.3% | 6.5% | 80 | 11.9% | 7.3% | -31 | -4.6pp |
| 50 to 54 | 77 | 11.5% | 6.9% | 57 | 8.5% | 7.1% | +20 | +3.0pp |
| 55 to 59 | 56 | 8.3% | 6.6% | 39 | 5.8% | 6.7% | +17 | +2.5pp |
| 60 to 64 | 38 | 5.7% | 6.1% | 32 | 4.8% | 5.8% | +6 | +0.9pp |
| 65 to 69 | 38 | 5.7% | 5.3% | 40 | 6.0% | 5.6% | -2 | -0.3pp |
| 70 to 74 | 36 | 5.4% | 5.1% | 33 | 4.9% | 5.0% | +3 | +0.5pp |
| 75 to 79 | 21 | 3.1% | 4.4% | 12 | 1.8% | 4.4% | +9 | +1.3pp |
| 80 to 84 | 12 | 1.8% | 3.7% | 4 | 0.6% | 3.1% | +8 | +1.2pp |
| 85 and over | 4 | 0.6% | 3.7% | 3 | 0.4% | 3.2% | +1 | +0.2pp |
| Total | 671 | 100.0% | 100.0% | 671 | 100.0% | 100.0% | 0 | 0.0pp |