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 Yilgarn (S), accounting for 10.1% (118 people). This share was higher than Regional WA (6.9%). Since 2016, the biggest change was in 65 to 69 year olds, which decreased by 30 people and 2.4 percentage points.
Section overview
Age structure - Five year age groups
Yilgarn (S) - Total persons (Usual residence)
This table summarises five year age groups for Yilgarn (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 Yilgarn (S), with comparison markers for Regional WA.
0 to 4
2021 count
41
% of total
3.5%
Change from 2016
-0.6pp
41
3.5%
-0.6pp
5 to 9
2021 count
39
% of total
3.3%
Change from 2016
-1.7pp
39
3.3%
-1.7pp
10 to 14
2021 count
34
% of total
2.9%
Change from 2016
-0.7pp
34
2.9%
-0.7pp
15 to 19
2021 count
21
% of total
1.8%
Change from 2016
-0.2pp
21
1.8%
-0.2pp
20 to 24
2021 count
48
% of total
4.1%
Change from 2016
-0.1pp
48
4.1%
-0.1pp
25 to 29
2021 count
92
% of total
7.8%
Change from 2016
-0.4pp
92
7.8%
-0.4pp
30 to 34
2021 count
82
% of total
7.0%
Change from 2016
+0.7pp
82
7.0%
+0.7pp
35 to 39
2021 count
92
% of total
7.8%
Change from 2016
+2.4pp
92
7.8%
+2.4pp
40 to 44
2021 count
72
% of total
6.1%
Change from 2016
-1.2pp
72
6.1%
-1.2pp
45 to 49
2021 count
100
% of total
8.5%
Change from 2016
-0.6pp
100
8.5%
-0.6pp
50 to 54
2021 count
118
% of total
10.1%
Change from 2016
-1.0pp
118
10.1%
-1.0pp
55 to 59
2021 count
118
% of total
10.1%
Change from 2016
+0.7pp
118
10.1%
+0.7pp
60 to 64
2021 count
98
% of total
8.4%
Change from 2016
+2.7pp
98
8.4%
+2.7pp
65 to 69
2021 count
56
% of total
4.8%
Change from 2016
-2.4pp
56
4.8%
-2.4pp
70 to 74
2021 count
59
% of total
5.0%
Change from 2016
+2.3pp
59
5.0%
+2.3pp
75 to 79
2021 count
16
% of total
1.4%
Change from 2016
-2.3pp
16
1.4%
-2.3pp
80 to 84
2021 count
21
% of total
1.8%
Change from 2016
+0.1pp
21
1.8%
+0.1pp
85 and over
2021 count
25
% of total
2.1%
Change from 2016
+0.4pp
25
2.1%
+0.4pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-8
-0.6pp
5 to 9
-21
-1.7pp
10 to 14
-9
-0.7pp
15 to 19
-3
-0.2pp
20 to 24
-2
-0.1pp
25 to 29
-6
-0.4pp
30 to 34
+6
+0.7pp
35 to 39
+27
+2.4pp
40 to 44
-16
-1.2pp
45 to 49
-9
-0.6pp
50 to 54
-16
-1.0pp
55 to 59
+5
+0.7pp
60 to 64
+29
+2.7pp
65 to 69
-30
-2.4pp
70 to 74
+27
+2.3pp
75 to 79
-28
-2.3pp
80 to 84
0
+0.1pp
85 and over
+5
+0.4pp
Data table
Five year age groups for Yilgarn (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 | 41 | 3.5% | 6.0% | 49 | 4.1% | 6.6% | -8 | -0.6pp |
| 5 to 9 | 39 | 3.3% | 6.7% | 60 | 5.0% | 7.1% | -21 | -1.7pp |
| 10 to 14 | 34 | 2.9% | 6.7% | 43 | 3.6% | 6.5% | -9 | -0.7pp |
| 15 to 19 | 21 | 1.8% | 5.5% | 24 | 2.0% | 5.7% | -3 | -0.2pp |
| 20 to 24 | 48 | 4.1% | 4.8% | 50 | 4.2% | 5.0% | -2 | -0.1pp |
| 25 to 29 | 92 | 7.8% | 5.9% | 98 | 8.2% | 6.5% | -6 | -0.4pp |
| 30 to 34 | 82 | 7.0% | 6.6% | 76 | 6.3% | 7.1% | +6 | +0.7pp |
| 35 to 39 | 92 | 7.8% | 6.8% | 65 | 5.4% | 6.7% | +27 | +2.4pp |
| 40 to 44 | 72 | 6.1% | 6.4% | 88 | 7.3% | 7.0% | -16 | -1.2pp |
| 45 to 49 | 100 | 8.5% | 6.6% | 109 | 9.1% | 7.2% | -9 | -0.6pp |
| 50 to 54 | 118 | 10.1% | 6.9% | 134 | 11.1% | 7.1% | -16 | -1.0pp |
| 55 to 59 | 118 | 10.1% | 6.8% | 113 | 9.4% | 6.9% | +5 | +0.7pp |
| 60 to 64 | 98 | 8.4% | 6.7% | 69 | 5.7% | 6.0% | +29 | +2.7pp |
| 65 to 69 | 56 | 4.8% | 5.7% | 86 | 7.2% | 5.3% | -30 | -2.4pp |
| 70 to 74 | 59 | 5.0% | 4.9% | 32 | 2.7% | 3.6% | +27 | +2.3pp |
| 75 to 79 | 16 | 1.4% | 3.2% | 44 | 3.7% | 2.6% | -28 | -2.3pp |
| 80 to 84 | 21 | 1.8% | 2.0% | 21 | 1.7% | 1.6% | 0 | +0.1pp |
| 85 and over | 25 | 2.1% | 1.7% | 20 | 1.7% | 1.5% | +5 | +0.4pp |
| Total | 1,173 | 100.0% | 100.0% | 1,202 | 100.0% | 100.0% | -29 | 0.0pp |