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, 55 to 59 year olds was the largest age group among residents in Dalwallinu (S), accounting for 8.4% (116 people). This share was higher than Regional WA (6.8%). Since 2016, the biggest change was in 50 to 54 year olds, which decreased by 41 people and 2.7 percentage points.
Section overview
Age structure - Five year age groups
Dalwallinu (S) - Total persons (Usual residence)
This table summarises five year age groups for Dalwallinu (S) in 2021 for persons, with comparison against Regional WA and change since 2016.
Chart view
Age structure - Five year age groups snapshot
2021 distribution by category for Dalwallinu (S), with comparison markers for Regional WA.
0 to 4
2021 count
110
% of total
8.0%
Change from 2016
+1.4pp
110
8.0%
+1.4pp
5 to 9
2021 count
95
% of total
6.9%
Change from 2016
-1.1pp
95
6.9%
-1.1pp
10 to 14
2021 count
101
% of total
7.3%
Change from 2016
+2.0pp
101
7.3%
+2.0pp
15 to 19
2021 count
58
% of total
4.2%
Change from 2016
+0.9pp
58
4.2%
+0.9pp
20 to 24
2021 count
68
% of total
4.9%
Change from 2016
-1.0pp
68
4.9%
-1.0pp
25 to 29
2021 count
87
% of total
6.3%
Change from 2016
-1.1pp
87
6.3%
-1.1pp
30 to 34
2021 count
101
% of total
7.3%
Change from 2016
-0.2pp
101
7.3%
-0.2pp
35 to 39
2021 count
102
% of total
7.4%
Change from 2016
-0.1pp
102
7.4%
-0.1pp
40 to 44
2021 count
99
% of total
7.2%
Change from 2016
+0.3pp
99
7.2%
+0.3pp
45 to 49
2021 count
85
% of total
6.2%
Change from 2016
+1.6pp
85
6.2%
+1.6pp
50 to 54
2021 count
69
% of total
5.0%
Change from 2016
-2.7pp
69
5.0%
-2.7pp
55 to 59
2021 count
116
% of total
8.4%
Change from 2016
+0.7pp
116
8.4%
+0.7pp
60 to 64
2021 count
87
% of total
6.3%
Change from 2016
-0.2pp
87
6.3%
-0.2pp
65 to 69
2021 count
71
% of total
5.1%
Change from 2016
+1.1pp
71
5.1%
+1.1pp
70 to 74
2021 count
31
% of total
2.2%
Change from 2016
-1.9pp
31
2.2%
-1.9pp
75 to 79
2021 count
42
% of total
3.0%
Change from 2016
+0.7pp
42
3.0%
+0.7pp
80 to 84
2021 count
23
% of total
1.7%
Change from 2016
-0.9pp
23
1.7%
-0.9pp
85 and over
2021 count
37
% of total
2.7%
Change from 2016
+0.8pp
37
2.7%
+0.8pp
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+15
+1.4pp
5 to 9
-20
-1.1pp
10 to 14
+25
+2.0pp
15 to 19
+11
+0.9pp
20 to 24
-17
-1.0pp
25 to 29
-19
-1.1pp
30 to 34
-6
-0.2pp
35 to 39
-5
-0.1pp
40 to 44
+1
+0.3pp
45 to 49
+19
+1.6pp
50 to 54
-41
-2.7pp
55 to 59
+6
+0.7pp
60 to 64
-6
-0.2pp
65 to 69
+14
+1.1pp
70 to 74
-28
-1.9pp
75 to 79
+9
+0.7pp
80 to 84
-14
-0.9pp
85 and over
+10
+0.8pp
Data table
Five year age groups for Dalwallinu (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 | 110 | 8.0% | 6.0% | 95 | 6.6% | 6.6% | +15 | +1.4pp |
| 5 to 9 | 95 | 6.9% | 6.7% | 115 | 8.0% | 7.1% | -20 | -1.1pp |
| 10 to 14 | 101 | 7.3% | 6.7% | 76 | 5.3% | 6.5% | +25 | +2.0pp |
| 15 to 19 | 58 | 4.2% | 5.5% | 47 | 3.3% | 5.7% | +11 | +0.9pp |
| 20 to 24 | 68 | 4.9% | 4.8% | 85 | 5.9% | 5.0% | -17 | -1.0pp |
| 25 to 29 | 87 | 6.3% | 5.9% | 106 | 7.4% | 6.5% | -19 | -1.1pp |
| 30 to 34 | 101 | 7.3% | 6.6% | 107 | 7.5% | 7.1% | -6 | -0.2pp |
| 35 to 39 | 102 | 7.4% | 6.8% | 107 | 7.5% | 6.7% | -5 | -0.1pp |
| 40 to 44 | 99 | 7.2% | 6.4% | 98 | 6.9% | 7.0% | +1 | +0.3pp |
| 45 to 49 | 85 | 6.2% | 6.6% | 66 | 4.6% | 7.2% | +19 | +1.6pp |
| 50 to 54 | 69 | 5.0% | 6.9% | 110 | 7.7% | 7.1% | -41 | -2.7pp |
| 55 to 59 | 116 | 8.4% | 6.8% | 110 | 7.7% | 6.9% | +6 | +0.7pp |
| 60 to 64 | 87 | 6.3% | 6.7% | 93 | 6.5% | 6.0% | -6 | -0.2pp |
| 65 to 69 | 71 | 5.1% | 5.7% | 57 | 4.0% | 5.3% | +14 | +1.1pp |
| 70 to 74 | 31 | 2.2% | 4.9% | 59 | 4.1% | 3.6% | -28 | -1.9pp |
| 75 to 79 | 42 | 3.0% | 3.2% | 33 | 2.3% | 2.6% | +9 | +0.7pp |
| 80 to 84 | 23 | 1.7% | 2.0% | 37 | 2.6% | 1.6% | -14 | -0.9pp |
| 85 and over | 37 | 2.7% | 1.7% | 27 | 1.9% | 1.5% | +10 | +0.8pp |
| Total | 1,379 | 100.0% | 100.0% | 1,429 | 100.0% | 100.0% | -50 | 0.0pp |