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 Woodanilling (S), accounting for 10% (45 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 9 percentage points.
Section overview
Age structure - Five year age groups
Woodanilling (S) - Total persons (Usual residence)
This table summarises five year age groups for Woodanilling (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 Woodanilling (S), with comparison markers for Regional WA.
0 to 4
2021 count
31
% of total
6.9%
Change from 2016
-2.9pp
31
6.9%
-2.9pp
5 to 9
2021 count
30
% of total
6.7%
Change from 2016
-0.9pp
30
6.7%
-0.9pp
10 to 14
2021 count
29
% of total
6.5%
Change from 2016
+0.6pp
29
6.5%
+0.6pp
15 to 19
2021 count
17
% of total
3.8%
Change from 2016
+1.6pp
17
3.8%
+1.6pp
20 to 24
2021 count
24
% of total
5.4%
Change from 2016
+1.2pp
24
5.4%
+1.2pp
25 to 29
2021 count
16
% of total
3.6%
Change from 2016
-2.0pp
16
3.6%
-2.0pp
30 to 34
2021 count
25
% of total
5.6%
Change from 2016
-0.3pp
25
5.6%
-0.3pp
35 to 39
2021 count
18
% of total
4.0%
Change from 2016
-3.3pp
18
4.0%
-3.3pp
40 to 44
2021 count
31
% of total
6.9%
Change from 2016
+1.3pp
31
6.9%
+1.3pp
45 to 49
2021 count
26
% of total
5.8%
Change from 2016
-1.3pp
26
5.8%
-1.3pp
50 to 54
2021 count
21
% of total
4.7%
Change from 2016
-9.0pp
21
4.7%
-9.0pp
55 to 59
2021 count
44
% of total
9.8%
Change from 2016
+1.0pp
44
9.8%
+1.0pp
60 to 64
2021 count
42
% of total
9.4%
Change from 2016
-0.4pp
42
9.4%
-0.4pp
65 to 69
2021 count
45
% of total
10.0%
Change from 2016
+4.9pp
45
10.0%
+4.9pp
70 to 74
2021 count
27
% of total
6.0%
Change from 2016
+1.6pp
27
6.0%
+1.6pp
75 to 79
2021 count
6
% of total
1.3%
Change from 2016
-0.9pp
6
1.3%
-0.9pp
80 to 84
2021 count
13
% of total
2.9%
Change from 2016
+1.7pp
13
2.9%
+1.7pp
85 and over
2021 count
3
% of total
0.7%
Change from 2016
+0.7pp
3
0.7%
+0.7pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-9
-2.9pp
5 to 9
-1
-0.9pp
10 to 14
+5
+0.6pp
15 to 19
+8
+1.6pp
20 to 24
+7
+1.2pp
25 to 29
-7
-2.0pp
30 to 34
+1
-0.3pp
35 to 39
-12
-3.3pp
40 to 44
+8
+1.3pp
45 to 49
-3
-1.3pp
50 to 54
-35
-9.0pp
55 to 59
+8
+1.0pp
60 to 64
+2
-0.4pp
65 to 69
+24
+4.9pp
70 to 74
+9
+1.6pp
75 to 79
-3
-0.9pp
80 to 84
+8
+1.7pp
85 and over
+3
+0.7pp
Data table
Five year age groups for Woodanilling (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 | 31 | 6.9% | 6.0% | 40 | 9.8% | 6.6% | -9 | -2.9pp |
| 5 to 9 | 30 | 6.7% | 6.7% | 31 | 7.6% | 7.1% | -1 | -0.9pp |
| 10 to 14 | 29 | 6.5% | 6.7% | 24 | 5.9% | 6.5% | +5 | +0.6pp |
| 15 to 19 | 17 | 3.8% | 5.5% | 9 | 2.2% | 5.7% | +8 | +1.6pp |
| 20 to 24 | 24 | 5.4% | 4.8% | 17 | 4.2% | 5.0% | +7 | +1.2pp |
| 25 to 29 | 16 | 3.6% | 5.9% | 23 | 5.6% | 6.5% | -7 | -2.0pp |
| 30 to 34 | 25 | 5.6% | 6.6% | 24 | 5.9% | 7.1% | +1 | -0.3pp |
| 35 to 39 | 18 | 4.0% | 6.8% | 30 | 7.3% | 6.7% | -12 | -3.3pp |
| 40 to 44 | 31 | 6.9% | 6.4% | 23 | 5.6% | 7.0% | +8 | +1.3pp |
| 45 to 49 | 26 | 5.8% | 6.6% | 29 | 7.1% | 7.2% | -3 | -1.3pp |
| 50 to 54 | 21 | 4.7% | 6.9% | 56 | 13.7% | 7.1% | -35 | -9.0pp |
| 55 to 59 | 44 | 9.8% | 6.8% | 36 | 8.8% | 6.9% | +8 | +1.0pp |
| 60 to 64 | 42 | 9.4% | 6.7% | 40 | 9.8% | 6.0% | +2 | -0.4pp |
| 65 to 69 | 45 | 10.0% | 5.7% | 21 | 5.1% | 5.3% | +24 | +4.9pp |
| 70 to 74 | 27 | 6.0% | 4.9% | 18 | 4.4% | 3.6% | +9 | +1.6pp |
| 75 to 79 | 6 | 1.3% | 3.2% | 9 | 2.2% | 2.6% | -3 | -0.9pp |
| 80 to 84 | 13 | 2.9% | 2.0% | 5 | 1.2% | 1.6% | +8 | +1.7pp |
| 85 and over | 3 | 0.7% | 1.7% | 0 | 0.0% | 1.5% | +3 | +0.7pp |
| Total | 448 | 100.0% | 100.0% | 409 | 100.0% | 100.0% | +39 | 0.0pp |