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, 65 to 69 year olds was the largest age group among residents in Wongan-Ballidu (S), accounting for 8.6% (111 people). This share was higher than Regional WA (5.7%). Since 2016, the biggest change was in 50 to 54 year olds, which decreased by 35 people and 2.4 percentage points.
Section overview
Age structure - Five year age groups
Wongan-Ballidu (S) - Total persons (Usual residence)
This table summarises five year age groups for Wongan-Ballidu (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 Wongan-Ballidu (S), with comparison markers for Regional WA.
0 to 4
2021 count
77
% of total
5.9%
Change from 2016
-0.6pp
77
5.9%
-0.6pp
5 to 9
2021 count
78
% of total
6.0%
Change from 2016
-2.4pp
78
6.0%
-2.4pp
10 to 14
2021 count
83
% of total
6.4%
Change from 2016
+0.6pp
83
6.4%
+0.6pp
15 to 19
2021 count
40
% of total
3.1%
Change from 2016
0.0pp
40
3.1%
0.0pp
20 to 24
2021 count
53
% of total
4.1%
Change from 2016
-0.3pp
53
4.1%
-0.3pp
25 to 29
2021 count
79
% of total
6.1%
Change from 2016
+0.5pp
79
6.1%
+0.5pp
30 to 34
2021 count
78
% of total
6.0%
Change from 2016
-1.6pp
78
6.0%
-1.6pp
35 to 39
2021 count
87
% of total
6.7%
Change from 2016
+0.8pp
87
6.7%
+0.8pp
40 to 44
2021 count
72
% of total
5.6%
Change from 2016
-1.0pp
72
5.6%
-1.0pp
45 to 49
2021 count
74
% of total
5.7%
Change from 2016
-0.2pp
74
5.7%
-0.2pp
50 to 54
2021 count
72
% of total
5.6%
Change from 2016
-2.4pp
72
5.6%
-2.4pp
55 to 59
2021 count
90
% of total
6.9%
Change from 2016
-0.5pp
90
6.9%
-0.5pp
60 to 64
2021 count
94
% of total
7.2%
Change from 2016
-1.0pp
94
7.2%
-1.0pp
65 to 69
2021 count
111
% of total
8.6%
Change from 2016
+2.8pp
111
8.6%
+2.8pp
70 to 74
2021 count
77
% of total
5.9%
Change from 2016
+1.8pp
77
5.9%
+1.8pp
75 to 79
2021 count
57
% of total
4.4%
Change from 2016
+2.1pp
57
4.4%
+2.1pp
80 to 84
2021 count
24
% of total
1.9%
Change from 2016
+0.2pp
24
1.9%
+0.2pp
85 and over
2021 count
18
% of total
1.4%
Change from 2016
-0.5pp
18
1.4%
-0.5pp
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-10
-0.6pp
5 to 9
-34
-2.4pp
10 to 14
+6
+0.6pp
15 to 19
-1
0.0pp
20 to 24
-6
-0.3pp
25 to 29
+4
+0.5pp
30 to 34
-23
-1.6pp
35 to 39
+8
+0.8pp
40 to 44
-16
-1.0pp
45 to 49
-4
-0.2pp
50 to 54
-35
-2.4pp
55 to 59
-8
-0.5pp
60 to 64
-15
-1.0pp
65 to 69
+34
+2.8pp
70 to 74
+22
+1.8pp
75 to 79
+26
+2.1pp
80 to 84
+1
+0.2pp
85 and over
-7
-0.5pp
Data table
Five year age groups for Wongan-Ballidu (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 | 77 | 5.9% | 6.0% | 87 | 6.5% | 6.6% | -10 | -0.6pp |
| 5 to 9 | 78 | 6.0% | 6.7% | 112 | 8.4% | 7.1% | -34 | -2.4pp |
| 10 to 14 | 83 | 6.4% | 6.7% | 77 | 5.8% | 6.5% | +6 | +0.6pp |
| 15 to 19 | 40 | 3.1% | 5.5% | 41 | 3.1% | 5.7% | -1 | 0.0pp |
| 20 to 24 | 53 | 4.1% | 4.8% | 59 | 4.4% | 5.0% | -6 | -0.3pp |
| 25 to 29 | 79 | 6.1% | 5.9% | 75 | 5.6% | 6.5% | +4 | +0.5pp |
| 30 to 34 | 78 | 6.0% | 6.6% | 101 | 7.6% | 7.1% | -23 | -1.6pp |
| 35 to 39 | 87 | 6.7% | 6.8% | 79 | 5.9% | 6.7% | +8 | +0.8pp |
| 40 to 44 | 72 | 5.6% | 6.4% | 88 | 6.6% | 7.0% | -16 | -1.0pp |
| 45 to 49 | 74 | 5.7% | 6.6% | 78 | 5.9% | 7.2% | -4 | -0.2pp |
| 50 to 54 | 72 | 5.6% | 6.9% | 107 | 8.0% | 7.1% | -35 | -2.4pp |
| 55 to 59 | 90 | 6.9% | 6.8% | 98 | 7.4% | 6.9% | -8 | -0.5pp |
| 60 to 64 | 94 | 7.2% | 6.7% | 109 | 8.2% | 6.0% | -15 | -1.0pp |
| 65 to 69 | 111 | 8.6% | 5.7% | 77 | 5.8% | 5.3% | +34 | +2.8pp |
| 70 to 74 | 77 | 5.9% | 4.9% | 55 | 4.1% | 3.6% | +22 | +1.8pp |
| 75 to 79 | 57 | 4.4% | 3.2% | 31 | 2.3% | 2.6% | +26 | +2.1pp |
| 80 to 84 | 24 | 1.9% | 2.0% | 23 | 1.7% | 1.6% | +1 | +0.2pp |
| 85 and over | 18 | 1.4% | 1.7% | 25 | 1.9% | 1.5% | -7 | -0.5pp |
| Total | 1,297 | 100.0% | 100.0% | 1,331 | 100.0% | 100.0% | -34 | 0.0pp |