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, 40 to 44 year olds was the largest age group among residents in Kent (S), accounting for 11.2% (55 people). This share was higher than Regional WA (6.4%). Since 2016, the biggest change was in 65 to 69 year olds, which decreased by 31 people and 5.2 percentage points.
Section overview
Age structure - Five year age groups
Kent (S) - Total persons (Usual residence)
This table summarises five year age groups for Kent (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 Kent (S), with comparison markers for Regional WA.
0 to 4
2021 count
44
% of total
9.0%
Change from 2016
-1.4pp
44
9.0%
-1.4pp
5 to 9
2021 count
52
% of total
10.6%
Change from 2016
+3.8pp
52
10.6%
+3.8pp
10 to 14
2021 count
23
% of total
4.7%
Change from 2016
-0.7pp
23
4.7%
-0.7pp
15 to 19
2021 count
21
% of total
4.3%
Change from 2016
+1.6pp
21
4.3%
+1.6pp
20 to 24
2021 count
27
% of total
5.5%
Change from 2016
+2.8pp
27
5.5%
+2.8pp
25 to 29
2021 count
28
% of total
5.7%
Change from 2016
+2.7pp
28
5.7%
+2.7pp
30 to 34
2021 count
37
% of total
7.5%
Change from 2016
0.0pp
37
7.5%
0.0pp
35 to 39
2021 count
38
% of total
7.7%
Change from 2016
-1.6pp
38
7.7%
-1.6pp
40 to 44
2021 count
55
% of total
11.2%
Change from 2016
+3.1pp
55
11.2%
+3.1pp
45 to 49
2021 count
34
% of total
6.9%
Change from 2016
+0.1pp
34
6.9%
+0.1pp
50 to 54
2021 count
43
% of total
8.8%
Change from 2016
+1.3pp
43
8.8%
+1.3pp
55 to 59
2021 count
32
% of total
6.5%
Change from 2016
+1.3pp
32
6.5%
+1.3pp
60 to 64
2021 count
21
% of total
4.3%
Change from 2016
-2.5pp
21
4.3%
-2.5pp
65 to 69
2021 count
14
% of total
2.9%
Change from 2016
-5.2pp
14
2.9%
-5.2pp
70 to 74
2021 count
16
% of total
3.3%
Change from 2016
+0.8pp
16
3.3%
+0.8pp
75 to 79
2021 count
11
% of total
2.2%
Change from 2016
-0.3pp
11
2.2%
-0.3pp
80 to 84
2021 count
7
% of total
1.4%
Change from 2016
+0.7pp
7
1.4%
+0.7pp
85 and over
2021 count
0
% of total
0.0%
Change from 2016
-0.5pp
0
0.0%
-0.5pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-14
-1.4pp
5 to 9
+14
+3.8pp
10 to 14
-7
-0.7pp
15 to 19
+6
+1.6pp
20 to 24
+12
+2.8pp
25 to 29
+11
+2.7pp
30 to 34
-5
0.0pp
35 to 39
-14
-1.6pp
40 to 44
+10
+3.1pp
45 to 49
-4
+0.1pp
50 to 54
+1
+1.3pp
55 to 59
+3
+1.3pp
60 to 64
-17
-2.5pp
65 to 69
-31
-5.2pp
70 to 74
+2
+0.8pp
75 to 79
-3
-0.3pp
80 to 84
+3
+0.7pp
85 and over
-3
-0.5pp
Data table
Five year age groups for Kent (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 | 44 | 9.0% | 6.0% | 58 | 10.4% | 6.6% | -14 | -1.4pp |
| 5 to 9 | 52 | 10.6% | 6.7% | 38 | 6.8% | 7.1% | +14 | +3.8pp |
| 10 to 14 | 23 | 4.7% | 6.7% | 30 | 5.4% | 6.5% | -7 | -0.7pp |
| 15 to 19 | 21 | 4.3% | 5.5% | 15 | 2.7% | 5.7% | +6 | +1.6pp |
| 20 to 24 | 27 | 5.5% | 4.8% | 15 | 2.7% | 5.0% | +12 | +2.8pp |
| 25 to 29 | 28 | 5.7% | 5.9% | 17 | 3.0% | 6.5% | +11 | +2.7pp |
| 30 to 34 | 37 | 7.5% | 6.6% | 42 | 7.5% | 7.1% | -5 | 0.0pp |
| 35 to 39 | 38 | 7.7% | 6.8% | 52 | 9.3% | 6.7% | -14 | -1.6pp |
| 40 to 44 | 55 | 11.2% | 6.4% | 45 | 8.1% | 7.0% | +10 | +3.1pp |
| 45 to 49 | 34 | 6.9% | 6.6% | 38 | 6.8% | 7.2% | -4 | +0.1pp |
| 50 to 54 | 43 | 8.8% | 6.9% | 42 | 7.5% | 7.1% | +1 | +1.3pp |
| 55 to 59 | 32 | 6.5% | 6.8% | 29 | 5.2% | 6.9% | +3 | +1.3pp |
| 60 to 64 | 21 | 4.3% | 6.7% | 38 | 6.8% | 6.0% | -17 | -2.5pp |
| 65 to 69 | 14 | 2.9% | 5.7% | 45 | 8.1% | 5.3% | -31 | -5.2pp |
| 70 to 74 | 16 | 3.3% | 4.9% | 14 | 2.5% | 3.6% | +2 | +0.8pp |
| 75 to 79 | 11 | 2.2% | 3.2% | 14 | 2.5% | 2.6% | -3 | -0.3pp |
| 80 to 84 | 7 | 1.4% | 2.0% | 4 | 0.7% | 1.6% | +3 | +0.7pp |
| 85 and over | 0 | 0.0% | 1.7% | 3 | 0.5% | 1.5% | -3 | -0.5pp |
| Total | 491 | 100.0% | 100.0% | 559 | 100.0% | 100.0% | -68 | 0.0pp |