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, 55 to 59 year olds was the largest age group among residents in West Ridgley, accounting for 18.5% (23 people). This share was higher than Burnie (C) (6.8%). Since 2016, the biggest change was in 15 to 19 year olds, which decreased by 28 people and 11.4 percentage points.
Section overview
Age structure - Five year age groups
West Ridgley - Total persons (Usual residence)
This table summarises five year age groups for West Ridgley in 2021 for persons, with comparison against Burnie (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for West Ridgley, with comparison markers for Burnie (C).
0 to 4
2021 count
11
% of total
8.9%
Change from 2016
+6.2pp
11
8.9%
+6.2pp
5 to 9
2021 count
11
% of total
8.9%
Change from 2016
+5.8pp
11
8.9%
+5.8pp
10 to 14
2021 count
0
% of total
0.0%
Change from 2016
-6.7pp
0
0.0%
-6.7pp
15 to 19
2021 count
3
% of total
2.4%
Change from 2016
-11.4pp
3
2.4%
-11.4pp
20 to 24
2021 count
0
% of total
0.0%
Change from 2016
-1.8pp
0
0.0%
-1.8pp
25 to 29
2021 count
15
% of total
12.1%
Change from 2016
+10.8pp
15
12.1%
+10.8pp
30 to 34
2021 count
0
% of total
0.0%
Change from 2016
-3.1pp
0
0.0%
-3.1pp
35 to 39
2021 count
4
% of total
3.2%
Change from 2016
-2.1pp
4
3.2%
-2.1pp
40 to 44
2021 count
0
% of total
0.0%
Change from 2016
-5.8pp
0
0.0%
-5.8pp
45 to 49
2021 count
6
% of total
4.8%
Change from 2016
-5.9pp
6
4.8%
-5.9pp
50 to 54
2021 count
5
% of total
4.0%
Change from 2016
-1.8pp
5
4.0%
-1.8pp
55 to 59
2021 count
23
% of total
18.5%
Change from 2016
+5.6pp
23
18.5%
+5.6pp
60 to 64
2021 count
15
% of total
12.1%
Change from 2016
+0.1pp
15
12.1%
+0.1pp
65 to 69
2021 count
0
% of total
0.0%
Change from 2016
-6.2pp
0
0.0%
-6.2pp
70 to 74
2021 count
14
% of total
11.3%
Change from 2016
+7.3pp
14
11.3%
+7.3pp
75 to 79
2021 count
0
% of total
0.0%
Change from 2016
-4.4pp
0
0.0%
-4.4pp
80 to 84
2021 count
4
% of total
3.2%
Change from 2016
+1.9pp
4
3.2%
+1.9pp
85 and over
2021 count
0
% of total
0.0%
Change from 2016
0.0pp
0
0.0%
0.0pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+5
+6.2pp
5 to 9
+4
+5.8pp
10 to 14
-15
-6.7pp
15 to 19
-28
-11.4pp
20 to 24
-4
-1.8pp
25 to 29
+12
+10.8pp
30 to 34
-7
-3.1pp
35 to 39
-8
-2.1pp
40 to 44
-13
-5.8pp
45 to 49
-18
-5.9pp
50 to 54
-8
-1.8pp
55 to 59
-6
+5.6pp
60 to 64
-12
+0.1pp
65 to 69
-14
-6.2pp
70 to 74
+5
+7.3pp
75 to 79
-10
-4.4pp
80 to 84
+1
+1.9pp
85 and over
0
0.0pp
Data table
Five year age groups for West Ridgley. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Burnie (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Burnie (C)% | Count | % | Burnie (C)% | Count | pp | |
| 0 to 4 | 11 | 8.9% | 5.6% | 6 | 2.7% | 6.0% | +5 | +6.2pp |
| 5 to 9 | 11 | 8.9% | 6.0% | 7 | 3.1% | 6.1% | +4 | +5.8pp |
| 10 to 14 | 0 | 0.0% | 6.4% | 15 | 6.7% | 6.2% | -15 | -6.7pp |
| 15 to 19 | 3 | 2.4% | 6.2% | 31 | 13.8% | 7.3% | -28 | -11.4pp |
| 20 to 24 | 0 | 0.0% | 6.1% | 4 | 1.8% | 6.4% | -4 | -1.8pp |
| 25 to 29 | 15 | 12.1% | 7.0% | 3 | 1.3% | 5.9% | +12 | +10.8pp |
| 30 to 34 | 0 | 0.0% | 6.1% | 7 | 3.1% | 5.5% | -7 | -3.1pp |
| 35 to 39 | 4 | 3.2% | 5.8% | 12 | 5.3% | 5.5% | -8 | -2.1pp |
| 40 to 44 | 0 | 0.0% | 5.6% | 13 | 5.8% | 6.1% | -13 | -5.8pp |
| 45 to 49 | 6 | 4.8% | 6.3% | 24 | 10.7% | 6.7% | -18 | -5.9pp |
| 50 to 54 | 5 | 4.0% | 6.7% | 13 | 5.8% | 7.2% | -8 | -1.8pp |
| 55 to 59 | 23 | 18.5% | 6.8% | 29 | 12.9% | 6.9% | -6 | +5.6pp |
| 60 to 64 | 15 | 12.1% | 6.4% | 27 | 12.0% | 6.1% | -12 | +0.1pp |
| 65 to 69 | 0 | 0.0% | 5.4% | 14 | 6.2% | 5.8% | -14 | -6.2pp |
| 70 to 74 | 14 | 11.3% | 5.1% | 9 | 4.0% | 4.4% | +5 | +7.3pp |
| 75 to 79 | 0 | 0.0% | 3.6% | 10 | 4.4% | 3.5% | -10 | -4.4pp |
| 80 to 84 | 4 | 3.2% | 2.5% | 3 | 1.3% | 2.4% | +1 | +1.9pp |
| 85 and over | 0 | 0.0% | 2.2% | 0 | 0.0% | 2.3% | 0 | 0.0pp |
| Total | 124 | 100.0% | 100.0% | 225 | 100.0% | 100.0% | -101 | 0.0pp |