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, 70 to 74 year olds was the largest age group among residents in Centennial Park (WA), accounting for 9.7% (67 people). This share was higher than Albany (C) (6.2%). Since 2016, the biggest change was in 85 and over year olds, which increased by 47 people and 6.6 percentage points.
Section overview
Age structure - Five year age groups
Centennial Park (WA) - Total persons (Usual residence)
This table summarises five year age groups for Centennial Park (WA) in 2021 for persons, with comparison against Albany (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Centennial Park (WA), with comparison markers for Albany (C).
0 to 4
2021 count
22
% of total
3.2%
Change from 2016
-1.0pp
22
3.2%
-1.0pp
5 to 9
2021 count
18
% of total
2.6%
Change from 2016
-1.6pp
18
2.6%
-1.6pp
10 to 14
2021 count
19
% of total
2.8%
Change from 2016
-0.2pp
19
2.8%
-0.2pp
15 to 19
2021 count
46
% of total
6.7%
Change from 2016
+4.2pp
46
6.7%
+4.2pp
20 to 24
2021 count
53
% of total
7.7%
Change from 2016
+3.5pp
53
7.7%
+3.5pp
25 to 29
2021 count
28
% of total
4.1%
Change from 2016
-2.4pp
28
4.1%
-2.4pp
30 to 34
2021 count
38
% of total
5.5%
Change from 2016
-3.6pp
38
5.5%
-3.6pp
35 to 39
2021 count
15
% of total
2.2%
Change from 2016
-2.9pp
15
2.2%
-2.9pp
40 to 44
2021 count
33
% of total
4.8%
Change from 2016
-1.7pp
33
4.8%
-1.7pp
45 to 49
2021 count
39
% of total
5.7%
Change from 2016
+1.3pp
39
5.7%
+1.3pp
50 to 54
2021 count
38
% of total
5.5%
Change from 2016
-2.7pp
38
5.5%
-2.7pp
55 to 59
2021 count
41
% of total
6.0%
Change from 2016
+0.3pp
41
6.0%
+0.3pp
60 to 64
2021 count
39
% of total
5.7%
Change from 2016
-5.1pp
39
5.7%
-5.1pp
65 to 69
2021 count
50
% of total
7.3%
Change from 2016
-4.3pp
50
7.3%
-4.3pp
70 to 74
2021 count
67
% of total
9.7%
Change from 2016
+2.7pp
67
9.7%
+2.7pp
75 to 79
2021 count
47
% of total
6.8%
Change from 2016
+0.5pp
47
6.8%
+0.5pp
80 to 84
2021 count
51
% of total
7.4%
Change from 2016
+3.8pp
51
7.4%
+3.8pp
85 and over
2021 count
51
% of total
7.4%
Change from 2016
+6.6pp
51
7.4%
+6.6pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
0
-1.0pp
5 to 9
-4
-1.6pp
10 to 14
+3
-0.2pp
15 to 19
+33
+4.2pp
20 to 24
+31
+3.5pp
25 to 29
-6
-2.4pp
30 to 34
-10
-3.6pp
35 to 39
-12
-2.9pp
40 to 44
-1
-1.7pp
45 to 49
+16
+1.3pp
50 to 54
-5
-2.7pp
55 to 59
+11
+0.3pp
60 to 64
-18
-5.1pp
65 to 69
-11
-4.3pp
70 to 74
+30
+2.7pp
75 to 79
+14
+0.5pp
80 to 84
+32
+3.8pp
85 and over
+47
+6.6pp
Data table
Five year age groups for Centennial Park (WA). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Albany (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Albany (C)% | Count | % | Albany (C)% | Count | pp | |
| 0 to 4 | 22 | 3.2% | 5.0% | 22 | 4.2% | 5.4% | 0 | -1.0pp |
| 5 to 9 | 18 | 2.6% | 5.9% | 22 | 4.2% | 6.3% | -4 | -1.6pp |
| 10 to 14 | 19 | 2.8% | 6.7% | 16 | 3.0% | 6.9% | +3 | -0.2pp |
| 15 to 19 | 46 | 6.7% | 6.2% | 13 | 2.5% | 6.6% | +33 | +4.2pp |
| 20 to 24 | 53 | 7.7% | 4.4% | 22 | 4.2% | 4.8% | +31 | +3.5pp |
| 25 to 29 | 28 | 4.1% | 5.1% | 34 | 6.5% | 5.3% | -6 | -2.4pp |
| 30 to 34 | 38 | 5.5% | 5.6% | 48 | 9.1% | 5.3% | -10 | -3.6pp |
| 35 to 39 | 15 | 2.2% | 5.4% | 27 | 5.1% | 5.4% | -12 | -2.9pp |
| 40 to 44 | 33 | 4.8% | 5.5% | 34 | 6.5% | 6.1% | -1 | -1.7pp |
| 45 to 49 | 39 | 5.7% | 6.2% | 23 | 4.4% | 6.8% | +16 | +1.3pp |
| 50 to 54 | 38 | 5.5% | 6.6% | 43 | 8.2% | 6.7% | -5 | -2.7pp |
| 55 to 59 | 41 | 6.0% | 6.8% | 30 | 5.7% | 7.2% | +11 | +0.3pp |
| 60 to 64 | 39 | 5.7% | 7.2% | 57 | 10.8% | 6.8% | -18 | -5.1pp |
| 65 to 69 | 50 | 7.3% | 6.7% | 61 | 11.6% | 6.5% | -11 | -4.3pp |
| 70 to 74 | 67 | 9.7% | 6.2% | 37 | 7.0% | 4.8% | +30 | +2.7pp |
| 75 to 79 | 47 | 6.8% | 4.3% | 33 | 6.3% | 3.7% | +14 | +0.5pp |
| 80 to 84 | 51 | 7.4% | 3.1% | 19 | 3.6% | 2.7% | +32 | +3.8pp |
| 85 and over | 51 | 7.4% | 3.0% | 4 | 0.8% | 2.9% | +47 | +6.6pp |
| Total | 689 | 100.0% | 100.0% | 527 | 100.0% | 100.0% | +162 | 0.0pp |