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, 60 to 64 year olds was the largest age group among residents in Dumbleyung (S), accounting for 9.4% (64 people). This share was higher than Regional WA (6.7%). Since 2016, the biggest change was in 55 to 59 year olds, which decreased by 24 people and 3.6 percentage points.
Section overview
Age structure - Five year age groups
Dumbleyung (S) - Total persons (Usual residence)
This table summarises five year age groups for Dumbleyung (S) in 2021 for persons, with comparison against Regional WA and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Dumbleyung (S), with comparison markers for Regional WA.
0 to 4
2021 count
42
% of total
6.2%
Change from 2016
-0.8pp
42
6.2%
-0.8pp
5 to 9
2021 count
54
% of total
7.9%
Change from 2016
+0.4pp
54
7.9%
+0.4pp
10 to 14
2021 count
30
% of total
4.4%
Change from 2016
+1.7pp
30
4.4%
+1.7pp
15 to 19
2021 count
23
% of total
3.4%
Change from 2016
+1.5pp
23
3.4%
+1.5pp
20 to 24
2021 count
23
% of total
3.4%
Change from 2016
+0.6pp
23
3.4%
+0.6pp
25 to 29
2021 count
28
% of total
4.1%
Change from 2016
-2.6pp
28
4.1%
-2.6pp
30 to 34
2021 count
40
% of total
5.9%
Change from 2016
-2.3pp
40
5.9%
-2.3pp
35 to 39
2021 count
55
% of total
8.1%
Change from 2016
+1.5pp
55
8.1%
+1.5pp
40 to 44
2021 count
31
% of total
4.6%
Change from 2016
-2.6pp
31
4.6%
-2.6pp
45 to 49
2021 count
51
% of total
7.5%
Change from 2016
+2.4pp
51
7.5%
+2.4pp
50 to 54
2021 count
46
% of total
6.8%
Change from 2016
+1.0pp
46
6.8%
+1.0pp
55 to 59
2021 count
44
% of total
6.5%
Change from 2016
-3.6pp
44
6.5%
-3.6pp
60 to 64
2021 count
64
% of total
9.4%
Change from 2016
+1.2pp
64
9.4%
+1.2pp
65 to 69
2021 count
45
% of total
6.6%
Change from 2016
+0.9pp
45
6.6%
+0.9pp
70 to 74
2021 count
37
% of total
5.4%
Change from 2016
+1.7pp
37
5.4%
+1.7pp
75 to 79
2021 count
12
% of total
1.8%
Change from 2016
-1.6pp
12
1.8%
-1.6pp
80 to 84
2021 count
21
% of total
3.1%
Change from 2016
+1.5pp
21
3.1%
+1.5pp
85 and over
2021 count
0
% of total
0.0%
Change from 2016
-0.9pp
0
0.0%
-0.9pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-5
-0.8pp
5 to 9
+4
+0.4pp
10 to 14
+12
+1.7pp
15 to 19
+10
+1.5pp
20 to 24
+4
+0.6pp
25 to 29
-17
-2.6pp
30 to 34
-15
-2.3pp
35 to 39
+11
+1.5pp
40 to 44
-17
-2.6pp
45 to 49
+17
+2.4pp
50 to 54
+7
+1.0pp
55 to 59
-24
-3.6pp
60 to 64
+9
+1.2pp
65 to 69
+7
+0.9pp
70 to 74
+12
+1.7pp
75 to 79
-11
-1.6pp
80 to 84
+10
+1.5pp
85 and over
-6
-0.9pp
Data table
Five year age groups for Dumbleyung (S). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Regional WA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional WA% | Count | % | Regional WA% | Count | pp | |
| 0 to 4 | 42 | 6.2% | 6.0% | 47 | 7.0% | 6.6% | -5 | -0.8pp |
| 5 to 9 | 54 | 7.9% | 6.7% | 50 | 7.5% | 7.1% | +4 | +0.4pp |
| 10 to 14 | 30 | 4.4% | 6.7% | 18 | 2.7% | 6.5% | +12 | +1.7pp |
| 15 to 19 | 23 | 3.4% | 5.5% | 13 | 1.9% | 5.7% | +10 | +1.5pp |
| 20 to 24 | 23 | 3.4% | 4.8% | 19 | 2.8% | 5.0% | +4 | +0.6pp |
| 25 to 29 | 28 | 4.1% | 5.9% | 45 | 6.7% | 6.5% | -17 | -2.6pp |
| 30 to 34 | 40 | 5.9% | 6.6% | 55 | 8.2% | 7.1% | -15 | -2.3pp |
| 35 to 39 | 55 | 8.1% | 6.8% | 44 | 6.6% | 6.7% | +11 | +1.5pp |
| 40 to 44 | 31 | 4.6% | 6.4% | 48 | 7.2% | 7.0% | -17 | -2.6pp |
| 45 to 49 | 51 | 7.5% | 6.6% | 34 | 5.1% | 7.2% | +17 | +2.4pp |
| 50 to 54 | 46 | 6.8% | 6.9% | 39 | 5.8% | 7.1% | +7 | +1.0pp |
| 55 to 59 | 44 | 6.5% | 6.8% | 68 | 10.1% | 6.9% | -24 | -3.6pp |
| 60 to 64 | 64 | 9.4% | 6.7% | 55 | 8.2% | 6.0% | +9 | +1.2pp |
| 65 to 69 | 45 | 6.6% | 5.7% | 38 | 5.7% | 5.3% | +7 | +0.9pp |
| 70 to 74 | 37 | 5.4% | 4.9% | 25 | 3.7% | 3.6% | +12 | +1.7pp |
| 75 to 79 | 12 | 1.8% | 3.2% | 23 | 3.4% | 2.6% | -11 | -1.6pp |
| 80 to 84 | 21 | 3.1% | 2.0% | 11 | 1.6% | 1.6% | +10 | +1.5pp |
| 85 and over | 0 | 0.0% | 1.7% | 6 | 0.9% | 1.5% | -6 | -0.9pp |
| Total | 681 | 100.0% | 100.0% | 671 | 100.0% | 100.0% | +10 | 0.0pp |