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 Shark Bay (S), accounting for 8.2% (85 people). This share was higher than Regional WA (6.8%). Since 2016, the biggest change was in 65 to 69 year olds, which decreased by 24 people and 3.2 percentage points.
Section overview
Age structure - Five year age groups
Shark Bay (S) - Total persons (Usual residence)
This table summarises five year age groups for Shark Bay (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 Shark Bay (S), with comparison markers for Regional WA.
0 to 4
2021 count
62
% of total
6.0%
Change from 2016
-1.2pp
62
6.0%
-1.2pp
5 to 9
2021 count
59
% of total
5.7%
Change from 2016
+0.6pp
59
5.7%
+0.6pp
10 to 14
2021 count
39
% of total
3.8%
Change from 2016
-0.9pp
39
3.8%
-0.9pp
15 to 19
2021 count
29
% of total
2.8%
Change from 2016
+1.6pp
29
2.8%
+1.6pp
20 to 24
2021 count
49
% of total
4.8%
Change from 2016
+0.7pp
49
4.8%
+0.7pp
25 to 29
2021 count
71
% of total
6.9%
Change from 2016
+0.1pp
71
6.9%
+0.1pp
30 to 34
2021 count
76
% of total
7.4%
Change from 2016
-0.1pp
76
7.4%
-0.1pp
35 to 39
2021 count
80
% of total
7.8%
Change from 2016
-0.7pp
80
7.8%
-0.7pp
40 to 44
2021 count
56
% of total
5.4%
Change from 2016
-0.1pp
56
5.4%
-0.1pp
45 to 49
2021 count
54
% of total
5.2%
Change from 2016
-0.1pp
54
5.2%
-0.1pp
50 to 54
2021 count
65
% of total
6.3%
Change from 2016
-1.5pp
65
6.3%
-1.5pp
55 to 59
2021 count
85
% of total
8.2%
Change from 2016
+0.8pp
85
8.2%
+0.8pp
60 to 64
2021 count
81
% of total
7.9%
Change from 2016
0.0pp
81
7.9%
0.0pp
65 to 69
2021 count
74
% of total
7.2%
Change from 2016
-3.2pp
74
7.2%
-3.2pp
70 to 74
2021 count
76
% of total
7.4%
Change from 2016
+1.3pp
76
7.4%
+1.3pp
75 to 79
2021 count
41
% of total
4.0%
Change from 2016
+0.9pp
41
4.0%
+0.9pp
80 to 84
2021 count
26
% of total
2.5%
Change from 2016
+1.0pp
26
2.5%
+1.0pp
85 and over
2021 count
5
% of total
0.5%
Change from 2016
-0.8pp
5
0.5%
-0.8pp
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-6
-1.2pp
5 to 9
+11
+0.6pp
10 to 14
-5
-0.9pp
15 to 19
+18
+1.6pp
20 to 24
+10
+0.7pp
25 to 29
+7
+0.1pp
30 to 34
+5
-0.1pp
35 to 39
0
-0.7pp
40 to 44
+4
-0.1pp
45 to 49
+4
-0.1pp
50 to 54
-9
-1.5pp
55 to 59
+15
+0.8pp
60 to 64
+6
0.0pp
65 to 69
-24
-3.2pp
70 to 74
+18
+1.3pp
75 to 79
+12
+0.9pp
80 to 84
+12
+1.0pp
85 and over
-7
-0.8pp
Data table
Five year age groups for Shark Bay (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 | 62 | 6.0% | 6.0% | 68 | 7.2% | 6.6% | -6 | -1.2pp |
| 5 to 9 | 59 | 5.7% | 6.7% | 48 | 5.1% | 7.1% | +11 | +0.6pp |
| 10 to 14 | 39 | 3.8% | 6.7% | 44 | 4.7% | 6.5% | -5 | -0.9pp |
| 15 to 19 | 29 | 2.8% | 5.5% | 11 | 1.2% | 5.7% | +18 | +1.6pp |
| 20 to 24 | 49 | 4.8% | 4.8% | 39 | 4.1% | 5.0% | +10 | +0.7pp |
| 25 to 29 | 71 | 6.9% | 5.9% | 64 | 6.8% | 6.5% | +7 | +0.1pp |
| 30 to 34 | 76 | 7.4% | 6.6% | 71 | 7.5% | 7.1% | +5 | -0.1pp |
| 35 to 39 | 80 | 7.8% | 6.8% | 80 | 8.5% | 6.7% | 0 | -0.7pp |
| 40 to 44 | 56 | 5.4% | 6.4% | 52 | 5.5% | 7.0% | +4 | -0.1pp |
| 45 to 49 | 54 | 5.2% | 6.6% | 50 | 5.3% | 7.2% | +4 | -0.1pp |
| 50 to 54 | 65 | 6.3% | 6.9% | 74 | 7.8% | 7.1% | -9 | -1.5pp |
| 55 to 59 | 85 | 8.2% | 6.8% | 70 | 7.4% | 6.9% | +15 | +0.8pp |
| 60 to 64 | 81 | 7.9% | 6.7% | 75 | 7.9% | 6.0% | +6 | 0.0pp |
| 65 to 69 | 74 | 7.2% | 5.7% | 98 | 10.4% | 5.3% | -24 | -3.2pp |
| 70 to 74 | 76 | 7.4% | 4.9% | 58 | 6.1% | 3.6% | +18 | +1.3pp |
| 75 to 79 | 41 | 4.0% | 3.2% | 29 | 3.1% | 2.6% | +12 | +0.9pp |
| 80 to 84 | 26 | 2.5% | 2.0% | 14 | 1.5% | 1.6% | +12 | +1.0pp |
| 85 and over | 5 | 0.5% | 1.7% | 12 | 1.3% | 1.5% | -7 | -0.8pp |
| Total | 1,031 | 100.0% | 100.0% | 946 | 100.0% | 100.0% | +85 | 0.0pp |