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, 35 to 39 year olds was the largest age group among residents in Wanneroo, accounting for 6.9% (840 people). This share was lower than Wanneroo (C) (7.9%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 178 people and 1.4 percentage points.
Section overview
Age structure - Five year age groups
Wanneroo - Total persons (Usual residence)
This table summarises five year age groups for Wanneroo 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 Wanneroo, with comparison markers for Wanneroo (C).
0 to 4
2021 count
697
% of total
5.8%
Change from 2016
-0.7pp
697
5.8%
-0.7pp
5 to 9
2021 count
753
% of total
6.2%
Change from 2016
+0.1pp
753
6.2%
+0.1pp
10 to 14
2021 count
753
% of total
6.2%
Change from 2016
+1.2pp
753
6.2%
+1.2pp
15 to 19
2021 count
623
% of total
5.1%
Change from 2016
-0.6pp
623
5.1%
-0.6pp
20 to 24
2021 count
666
% of total
5.5%
Change from 2016
-1.0pp
666
5.5%
-1.0pp
25 to 29
2021 count
689
% of total
5.7%
Change from 2016
-1.2pp
689
5.7%
-1.2pp
30 to 34
2021 count
799
% of total
6.6%
Change from 2016
-0.6pp
799
6.6%
-0.6pp
35 to 39
2021 count
840
% of total
6.9%
Change from 2016
+0.3pp
840
6.9%
+0.3pp
40 to 44
2021 count
765
% of total
6.3%
Change from 2016
+0.7pp
765
6.3%
+0.7pp
45 to 49
2021 count
707
% of total
5.8%
Change from 2016
-0.7pp
707
5.8%
-0.7pp
50 to 54
2021 count
736
% of total
6.1%
Change from 2016
-0.2pp
736
6.1%
-0.2pp
55 to 59
2021 count
741
% of total
6.1%
Change from 2016
-0.4pp
741
6.1%
-0.4pp
60 to 64
2021 count
745
% of total
6.2%
Change from 2016
+0.5pp
745
6.2%
+0.5pp
65 to 69
2021 count
705
% of total
5.8%
Change from 2016
-0.3pp
705
5.8%
-0.3pp
70 to 74
2021 count
717
% of total
5.9%
Change from 2016
+1.4pp
717
5.9%
+1.4pp
75 to 79
2021 count
475
% of total
3.9%
Change from 2016
+0.8pp
475
3.9%
+0.8pp
80 to 84
2021 count
321
% of total
2.7%
Change from 2016
+0.5pp
321
2.7%
+0.5pp
85 and over
2021 count
365
% of total
3.0%
Change from 2016
+0.1pp
365
3.0%
+0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-89
-0.7pp
5 to 9
+14
+0.1pp
10 to 14
+146
+1.2pp
15 to 19
-65
-0.6pp
20 to 24
-123
-1.0pp
25 to 29
-149
-1.2pp
30 to 34
-68
-0.6pp
35 to 39
+48
+0.3pp
40 to 44
+85
+0.7pp
45 to 49
-79
-0.7pp
50 to 54
-21
-0.2pp
55 to 59
-49
-0.4pp
60 to 64
+54
+0.5pp
65 to 69
-37
-0.3pp
70 to 74
+178
+1.4pp
75 to 79
+105
+0.8pp
80 to 84
+59
+0.5pp
85 and over
+13
+0.1pp
Data table
Five year age groups for Wanneroo. 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 | 697 | 5.8% | 7.1% | 786 | 6.5% | 8.0% | -89 | -0.7pp |
| 5 to 9 | 753 | 6.2% | 7.6% | 739 | 6.1% | 7.9% | +14 | +0.1pp |
| 10 to 14 | 753 | 6.2% | 7.4% | 607 | 5.0% | 7.1% | +146 | +1.2pp |
| 15 to 19 | 623 | 5.1% | 6.6% | 688 | 5.7% | 7.1% | -65 | -0.6pp |
| 20 to 24 | 666 | 5.5% | 6.4% | 789 | 6.5% | 6.8% | -123 | -1.0pp |
| 25 to 29 | 689 | 5.7% | 6.5% | 838 | 6.9% | 7.5% | -149 | -1.2pp |
| 30 to 34 | 799 | 6.6% | 7.4% | 867 | 7.2% | 8.1% | -68 | -0.6pp |
| 35 to 39 | 840 | 6.9% | 7.9% | 792 | 6.6% | 7.5% | +48 | +0.3pp |
| 40 to 44 | 765 | 6.3% | 6.9% | 680 | 5.6% | 7.6% | +85 | +0.7pp |
| 45 to 49 | 707 | 5.8% | 7.0% | 786 | 6.5% | 7.4% | -79 | -0.7pp |
| 50 to 54 | 736 | 6.1% | 6.7% | 757 | 6.3% | 6.2% | -21 | -0.2pp |
| 55 to 59 | 741 | 6.1% | 5.7% | 790 | 6.5% | 5.0% | -49 | -0.4pp |
| 60 to 64 | 745 | 6.2% | 4.7% | 691 | 5.7% | 3.9% | +54 | +0.5pp |
| 65 to 69 | 705 | 5.8% | 3.8% | 742 | 6.1% | 3.5% | -37 | -0.3pp |
| 70 to 74 | 717 | 5.9% | 3.3% | 539 | 4.5% | 2.4% | +178 | +1.4pp |
| 75 to 79 | 475 | 3.9% | 2.2% | 370 | 3.1% | 1.8% | +105 | +0.8pp |
| 80 to 84 | 321 | 2.7% | 1.5% | 262 | 2.2% | 1.2% | +59 | +0.5pp |
| 85 and over | 365 | 3.0% | 1.3% | 352 | 2.9% | 1.0% | +13 | +0.1pp |
| Total | 12,113 | 100.0% | 100.0% | 12,067 | 100.0% | 100.0% | +46 | 0.0pp |