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 Marangaroo, accounting for 7% (735 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 149 people and 1.4 percentage points.
Section overview
Age structure - Five year age groups
Marangaroo - Total persons (Usual residence)
This table summarises five year age groups for Marangaroo 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 Marangaroo, with comparison markers for Wanneroo (C).
0 to 4
2021 count
604
% of total
5.8%
Change from 2016
-0.5pp
604
5.8%
-0.5pp
5 to 9
2021 count
669
% of total
6.4%
Change from 2016
-0.2pp
669
6.4%
-0.2pp
10 to 14
2021 count
634
% of total
6.0%
Change from 2016
-0.2pp
634
6.0%
-0.2pp
15 to 19
2021 count
650
% of total
6.2%
Change from 2016
-1.3pp
650
6.2%
-1.3pp
20 to 24
2021 count
682
% of total
6.5%
Change from 2016
-0.4pp
682
6.5%
-0.4pp
25 to 29
2021 count
629
% of total
6.0%
Change from 2016
-0.8pp
629
6.0%
-0.8pp
30 to 34
2021 count
701
% of total
6.7%
Change from 2016
-0.3pp
701
6.7%
-0.3pp
35 to 39
2021 count
735
% of total
7.0%
Change from 2016
0.0pp
735
7.0%
0.0pp
40 to 44
2021 count
617
% of total
5.9%
Change from 2016
-0.9pp
617
5.9%
-0.9pp
45 to 49
2021 count
661
% of total
6.3%
Change from 2016
-0.7pp
661
6.3%
-0.7pp
50 to 54
2021 count
694
% of total
6.6%
Change from 2016
0.0pp
694
6.6%
0.0pp
55 to 59
2021 count
663
% of total
6.3%
Change from 2016
+0.1pp
663
6.3%
+0.1pp
60 to 64
2021 count
674
% of total
6.4%
Change from 2016
+1.2pp
674
6.4%
+1.2pp
65 to 69
2021 count
557
% of total
5.3%
Change from 2016
+0.7pp
557
5.3%
+0.7pp
70 to 74
2021 count
483
% of total
4.6%
Change from 2016
+1.4pp
483
4.6%
+1.4pp
75 to 79
2021 count
322
% of total
3.1%
Change from 2016
+0.7pp
322
3.1%
+0.7pp
80 to 84
2021 count
238
% of total
2.3%
Change from 2016
+0.8pp
238
2.3%
+0.8pp
85 and over
2021 count
254
% of total
2.4%
Change from 2016
+0.2pp
254
2.4%
+0.2pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-62
-0.5pp
5 to 9
-26
-0.2pp
10 to 14
-24
-0.2pp
15 to 19
-143
-1.3pp
20 to 24
-49
-0.4pp
25 to 29
-90
-0.8pp
30 to 34
-37
-0.3pp
35 to 39
-6
0.0pp
40 to 44
-106
-0.9pp
45 to 49
-79
-0.7pp
50 to 54
-5
0.0pp
55 to 59
+5
+0.1pp
60 to 64
+119
+1.2pp
65 to 69
+73
+0.7pp
70 to 74
+149
+1.4pp
75 to 79
+64
+0.7pp
80 to 84
+74
+0.8pp
85 and over
+21
+0.2pp
Data table
Five year age groups for Marangaroo. 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 | 604 | 5.8% | 7.1% | 666 | 6.3% | 8.0% | -62 | -0.5pp |
| 5 to 9 | 669 | 6.4% | 7.6% | 695 | 6.6% | 7.9% | -26 | -0.2pp |
| 10 to 14 | 634 | 6.0% | 7.4% | 658 | 6.2% | 7.1% | -24 | -0.2pp |
| 15 to 19 | 650 | 6.2% | 6.6% | 793 | 7.5% | 7.1% | -143 | -1.3pp |
| 20 to 24 | 682 | 6.5% | 6.4% | 731 | 6.9% | 6.8% | -49 | -0.4pp |
| 25 to 29 | 629 | 6.0% | 6.5% | 719 | 6.8% | 7.5% | -90 | -0.8pp |
| 30 to 34 | 701 | 6.7% | 7.4% | 738 | 7.0% | 8.1% | -37 | -0.3pp |
| 35 to 39 | 735 | 7.0% | 7.9% | 741 | 7.0% | 7.5% | -6 | 0.0pp |
| 40 to 44 | 617 | 5.9% | 6.9% | 723 | 6.8% | 7.6% | -106 | -0.9pp |
| 45 to 49 | 661 | 6.3% | 7.0% | 740 | 7.0% | 7.4% | -79 | -0.7pp |
| 50 to 54 | 694 | 6.6% | 6.7% | 699 | 6.6% | 6.2% | -5 | 0.0pp |
| 55 to 59 | 663 | 6.3% | 5.7% | 658 | 6.2% | 5.0% | +5 | +0.1pp |
| 60 to 64 | 674 | 6.4% | 4.7% | 555 | 5.2% | 3.9% | +119 | +1.2pp |
| 65 to 69 | 557 | 5.3% | 3.8% | 484 | 4.6% | 3.5% | +73 | +0.7pp |
| 70 to 74 | 483 | 4.6% | 3.3% | 334 | 3.2% | 2.4% | +149 | +1.4pp |
| 75 to 79 | 322 | 3.1% | 2.2% | 258 | 2.4% | 1.8% | +64 | +0.7pp |
| 80 to 84 | 238 | 2.3% | 1.5% | 164 | 1.5% | 1.2% | +74 | +0.8pp |
| 85 and over | 254 | 2.4% | 1.3% | 233 | 2.2% | 1.0% | +21 | +0.2pp |
| Total | 10,483 | 100.0% | 100.0% | 10,592 | 100.0% | 100.0% | -109 | 0.0pp |