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, 50 to 54 year olds was the largest age group among residents in Quinns Rocks, accounting for 8.8% (783 people). This share was higher than Wanneroo (C) (6.7%). Since 2016, the biggest change was in 40 to 44 year olds, which decreased by 166 people and 2 percentage points.
Section overview
Age structure - Five year age groups
Quinns Rocks - Total persons (Usual residence)
This table summarises five year age groups for Quinns Rocks 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 Quinns Rocks, with comparison markers for Wanneroo (C).
0 to 4
2021 count
471
% of total
5.3%
Change from 2016
-1.0pp
471
5.3%
-1.0pp
5 to 9
2021 count
575
% of total
6.5%
Change from 2016
-1.6pp
575
6.5%
-1.6pp
10 to 14
2021 count
706
% of total
8.0%
Change from 2016
-0.9pp
706
8.0%
-0.9pp
15 to 19
2021 count
709
% of total
8.0%
Change from 2016
-0.7pp
709
8.0%
-0.7pp
20 to 24
2021 count
626
% of total
7.1%
Change from 2016
+0.8pp
626
7.1%
+0.8pp
25 to 29
2021 count
492
% of total
5.6%
Change from 2016
+0.4pp
492
5.6%
+0.4pp
30 to 34
2021 count
521
% of total
5.9%
Change from 2016
+0.7pp
521
5.9%
+0.7pp
35 to 39
2021 count
510
% of total
5.8%
Change from 2016
-1.2pp
510
5.8%
-1.2pp
40 to 44
2021 count
600
% of total
6.8%
Change from 2016
-2.0pp
600
6.8%
-2.0pp
45 to 49
2021 count
725
% of total
8.2%
Change from 2016
-1.7pp
725
8.2%
-1.7pp
50 to 54
2021 count
783
% of total
8.8%
Change from 2016
+1.1pp
783
8.8%
+1.1pp
55 to 59
2021 count
695
% of total
7.8%
Change from 2016
+1.7pp
695
7.8%
+1.7pp
60 to 64
2021 count
486
% of total
5.5%
Change from 2016
+1.8pp
486
5.5%
+1.8pp
65 to 69
2021 count
333
% of total
3.8%
Change from 2016
+0.1pp
333
3.8%
+0.1pp
70 to 74
2021 count
290
% of total
3.3%
Change from 2016
+1.4pp
290
3.3%
+1.4pp
75 to 79
2021 count
169
% of total
1.9%
Change from 2016
+0.5pp
169
1.9%
+0.5pp
80 to 84
2021 count
94
% of total
1.1%
Change from 2016
+0.1pp
94
1.1%
+0.1pp
85 and over
2021 count
77
% of total
0.9%
Change from 2016
+0.2pp
77
0.9%
+0.2pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-80
-1.0pp
5 to 9
-135
-1.6pp
10 to 14
-74
-0.9pp
15 to 19
-51
-0.7pp
20 to 24
+77
+0.8pp
25 to 29
+39
+0.4pp
30 to 34
+64
+0.7pp
35 to 39
-98
-1.2pp
40 to 44
-166
-2.0pp
45 to 49
-140
-1.7pp
50 to 54
+112
+1.1pp
55 to 59
+164
+1.7pp
60 to 64
+160
+1.8pp
65 to 69
+14
+0.1pp
70 to 74
+125
+1.4pp
75 to 79
+47
+0.5pp
80 to 84
+11
+0.1pp
85 and over
+19
+0.2pp
Data table
Five year age groups for Quinns Rocks. 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 | 471 | 5.3% | 7.1% | 551 | 6.3% | 8.0% | -80 | -1.0pp |
| 5 to 9 | 575 | 6.5% | 7.6% | 710 | 8.1% | 7.9% | -135 | -1.6pp |
| 10 to 14 | 706 | 8.0% | 7.4% | 780 | 8.9% | 7.1% | -74 | -0.9pp |
| 15 to 19 | 709 | 8.0% | 6.6% | 760 | 8.7% | 7.1% | -51 | -0.7pp |
| 20 to 24 | 626 | 7.1% | 6.4% | 549 | 6.3% | 6.8% | +77 | +0.8pp |
| 25 to 29 | 492 | 5.6% | 6.5% | 453 | 5.2% | 7.5% | +39 | +0.4pp |
| 30 to 34 | 521 | 5.9% | 7.4% | 457 | 5.2% | 8.1% | +64 | +0.7pp |
| 35 to 39 | 510 | 5.8% | 7.9% | 608 | 7.0% | 7.5% | -98 | -1.2pp |
| 40 to 44 | 600 | 6.8% | 6.9% | 766 | 8.8% | 7.6% | -166 | -2.0pp |
| 45 to 49 | 725 | 8.2% | 7.0% | 865 | 9.9% | 7.4% | -140 | -1.7pp |
| 50 to 54 | 783 | 8.8% | 6.7% | 671 | 7.7% | 6.2% | +112 | +1.1pp |
| 55 to 59 | 695 | 7.8% | 5.7% | 531 | 6.1% | 5.0% | +164 | +1.7pp |
| 60 to 64 | 486 | 5.5% | 4.7% | 326 | 3.7% | 3.9% | +160 | +1.8pp |
| 65 to 69 | 333 | 3.8% | 3.8% | 319 | 3.7% | 3.5% | +14 | +0.1pp |
| 70 to 74 | 290 | 3.3% | 3.3% | 165 | 1.9% | 2.4% | +125 | +1.4pp |
| 75 to 79 | 169 | 1.9% | 2.2% | 122 | 1.4% | 1.8% | +47 | +0.5pp |
| 80 to 84 | 94 | 1.1% | 1.5% | 83 | 1.0% | 1.2% | +11 | +0.1pp |
| 85 and over | 77 | 0.9% | 1.3% | 58 | 0.7% | 1.0% | +19 | +0.2pp |
| Total | 8,861 | 100.0% | 100.0% | 8,734 | 100.0% | 100.0% | +127 | 0.0pp |