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, 60 to 64 year olds was the largest age group among residents in Mariginiup, accounting for 8.9% (78 people). This share was higher than Wanneroo (C) (4.7%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 28 people and 3.1 percentage points.
Section overview
Age structure - Five year age groups
Mariginiup - Total persons (Usual residence)
This table summarises five year age groups for Mariginiup in 2021 for persons, with comparison against Wanneroo (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Mariginiup, with comparison markers for Wanneroo (C).
0 to 4
2021 count
25
% of total
2.9%
Change from 2016
-0.7pp
25
2.9%
-0.7pp
5 to 9
2021 count
51
% of total
5.8%
Change from 2016
+0.3pp
51
5.8%
+0.3pp
10 to 14
2021 count
56
% of total
6.4%
Change from 2016
-1.0pp
56
6.4%
-1.0pp
15 to 19
2021 count
65
% of total
7.4%
Change from 2016
-1.1pp
65
7.4%
-1.1pp
20 to 24
2021 count
57
% of total
6.5%
Change from 2016
+1.6pp
57
6.5%
+1.6pp
25 to 29
2021 count
35
% of total
4.0%
Change from 2016
-1.3pp
35
4.0%
-1.3pp
30 to 34
2021 count
40
% of total
4.6%
Change from 2016
-0.3pp
40
4.6%
-0.3pp
35 to 39
2021 count
44
% of total
5.0%
Change from 2016
-0.4pp
44
5.0%
-0.4pp
40 to 44
2021 count
52
% of total
5.9%
Change from 2016
+2.4pp
52
5.9%
+2.4pp
45 to 49
2021 count
47
% of total
5.4%
Change from 2016
-3.4pp
47
5.4%
-3.4pp
50 to 54
2021 count
64
% of total
7.3%
Change from 2016
-1.6pp
64
7.3%
-1.6pp
55 to 59
2021 count
76
% of total
8.7%
Change from 2016
-1.2pp
76
8.7%
-1.2pp
60 to 64
2021 count
78
% of total
8.9%
Change from 2016
-1.6pp
78
8.9%
-1.6pp
65 to 69
2021 count
64
% of total
7.3%
Change from 2016
+0.3pp
64
7.3%
+0.3pp
70 to 74
2021 count
56
% of total
6.4%
Change from 2016
+3.1pp
56
6.4%
+3.1pp
75 to 79
2021 count
28
% of total
3.2%
Change from 2016
+1.6pp
28
3.2%
+1.6pp
80 to 84
2021 count
8
% of total
0.9%
Change from 2016
+0.1pp
8
0.9%
+0.1pp
85 and over
2021 count
0
% of total
0.0%
Change from 2016
-0.6pp
0
0.0%
-0.6pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-5
-0.7pp
5 to 9
+5
+0.3pp
10 to 14
-6
-1.0pp
15 to 19
-6
-1.1pp
20 to 24
+16
+1.6pp
25 to 29
-9
-1.3pp
30 to 34
-1
-0.3pp
35 to 39
-1
-0.4pp
40 to 44
+23
+2.4pp
45 to 49
-27
-3.4pp
50 to 54
-11
-1.6pp
55 to 59
-7
-1.2pp
60 to 64
-10
-1.6pp
65 to 69
+5
+0.3pp
70 to 74
+28
+3.1pp
75 to 79
+15
+1.6pp
80 to 84
+1
+0.1pp
85 and over
-5
-0.6pp
Data table
Five year age groups for Mariginiup. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Wanneroo (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Wanneroo (C)% | Count | % | Wanneroo (C)% | Count | pp | |
| 0 to 4 | 25 | 2.9% | 7.1% | 30 | 3.6% | 8.0% | -5 | -0.7pp |
| 5 to 9 | 51 | 5.8% | 7.6% | 46 | 5.5% | 7.9% | +5 | +0.3pp |
| 10 to 14 | 56 | 6.4% | 7.4% | 62 | 7.4% | 7.1% | -6 | -1.0pp |
| 15 to 19 | 65 | 7.4% | 6.6% | 71 | 8.5% | 7.1% | -6 | -1.1pp |
| 20 to 24 | 57 | 6.5% | 6.4% | 41 | 4.9% | 6.8% | +16 | +1.6pp |
| 25 to 29 | 35 | 4.0% | 6.5% | 44 | 5.3% | 7.5% | -9 | -1.3pp |
| 30 to 34 | 40 | 4.6% | 7.4% | 41 | 4.9% | 8.1% | -1 | -0.3pp |
| 35 to 39 | 44 | 5.0% | 7.9% | 45 | 5.4% | 7.5% | -1 | -0.4pp |
| 40 to 44 | 52 | 5.9% | 6.9% | 29 | 3.5% | 7.6% | +23 | +2.4pp |
| 45 to 49 | 47 | 5.4% | 7.0% | 74 | 8.8% | 7.4% | -27 | -3.4pp |
| 50 to 54 | 64 | 7.3% | 6.7% | 75 | 8.9% | 6.2% | -11 | -1.6pp |
| 55 to 59 | 76 | 8.7% | 5.7% | 83 | 9.9% | 5.0% | -7 | -1.2pp |
| 60 to 64 | 78 | 8.9% | 4.7% | 88 | 10.5% | 3.9% | -10 | -1.6pp |
| 65 to 69 | 64 | 7.3% | 3.8% | 59 | 7.0% | 3.5% | +5 | +0.3pp |
| 70 to 74 | 56 | 6.4% | 3.3% | 28 | 3.3% | 2.4% | +28 | +3.1pp |
| 75 to 79 | 28 | 3.2% | 2.2% | 13 | 1.6% | 1.8% | +15 | +1.6pp |
| 80 to 84 | 8 | 0.9% | 1.5% | 7 | 0.8% | 1.2% | +1 | +0.1pp |
| 85 and over | 0 | 0.0% | 1.3% | 5 | 0.6% | 1.0% | -5 | -0.6pp |
| Total | 876 | 100.0% | 100.0% | 838 | 100.0% | 100.0% | +38 | 0.0pp |