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, 60 to 64 year olds was the largest age group among residents in Cooktown, accounting for 9.1% (250 people). This share was higher than Cook (S) (8.6%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 46 people and 1.5 percentage points.
Section overview
Age structure - Five year age groups
Cooktown - Total persons (Usual residence)
This table summarises five year age groups for Cooktown in 2021 for persons, with comparison against Cook (S) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Cooktown, with comparison markers for Cook (S).
0 to 4
2021 count
156
% of total
5.7%
Change from 2016
-0.7pp
156
5.7%
-0.7pp
5 to 9
2021 count
189
% of total
6.9%
Change from 2016
0.0pp
189
6.9%
0.0pp
10 to 14
2021 count
189
% of total
6.9%
Change from 2016
+0.1pp
189
6.9%
+0.1pp
15 to 19
2021 count
151
% of total
5.5%
Change from 2016
+1.0pp
151
5.5%
+1.0pp
20 to 24
2021 count
104
% of total
3.8%
Change from 2016
-0.5pp
104
3.8%
-0.5pp
25 to 29
2021 count
106
% of total
3.9%
Change from 2016
-1.5pp
106
3.9%
-1.5pp
30 to 34
2021 count
150
% of total
5.5%
Change from 2016
0.0pp
150
5.5%
0.0pp
35 to 39
2021 count
145
% of total
5.3%
Change from 2016
-0.1pp
145
5.3%
-0.1pp
40 to 44
2021 count
181
% of total
6.6%
Change from 2016
0.0pp
181
6.6%
0.0pp
45 to 49
2021 count
181
% of total
6.6%
Change from 2016
+0.9pp
181
6.6%
+0.9pp
50 to 54
2021 count
191
% of total
7.0%
Change from 2016
-0.2pp
191
7.0%
-0.2pp
55 to 59
2021 count
192
% of total
7.0%
Change from 2016
-1.8pp
192
7.0%
-1.8pp
60 to 64
2021 count
250
% of total
9.1%
Change from 2016
+0.6pp
250
9.1%
+0.6pp
65 to 69
2021 count
191
% of total
7.0%
Change from 2016
-1.6pp
191
7.0%
-1.6pp
70 to 74
2021 count
180
% of total
6.6%
Change from 2016
+1.5pp
180
6.6%
+1.5pp
75 to 79
2021 count
111
% of total
4.0%
Change from 2016
+1.1pp
111
4.0%
+1.1pp
80 to 84
2021 count
53
% of total
1.9%
Change from 2016
+0.9pp
53
1.9%
+0.9pp
85 and over
2021 count
19
% of total
0.7%
Change from 2016
-0.4pp
19
0.7%
-0.4pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-13
-0.7pp
5 to 9
+7
0.0pp
10 to 14
+10
+0.1pp
15 to 19
+33
+1.0pp
20 to 24
-10
-0.5pp
25 to 29
-37
-1.5pp
30 to 34
+5
0.0pp
35 to 39
+2
-0.1pp
40 to 44
+7
0.0pp
45 to 49
+31
+0.9pp
50 to 54
+1
-0.2pp
55 to 59
-39
-1.8pp
60 to 64
+27
+0.6pp
65 to 69
-34
-1.6pp
70 to 74
+46
+1.5pp
75 to 79
+36
+1.1pp
80 to 84
+28
+0.9pp
85 and over
-9
-0.4pp
Data table
Five year age groups for Cooktown. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Cook (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Cook (S)% | Count | % | Cook (S)% | Count | pp | |
| 0 to 4 | 156 | 5.7% | 5.3% | 169 | 6.4% | 6.2% | -13 | -0.7pp |
| 5 to 9 | 189 | 6.9% | 6.1% | 182 | 6.9% | 6.8% | +7 | 0.0pp |
| 10 to 14 | 189 | 6.9% | 5.9% | 179 | 6.8% | 6.0% | +10 | +0.1pp |
| 15 to 19 | 151 | 5.5% | 4.5% | 118 | 4.5% | 4.7% | +33 | +1.0pp |
| 20 to 24 | 104 | 3.8% | 4.8% | 114 | 4.3% | 6.9% | -10 | -0.5pp |
| 25 to 29 | 106 | 3.9% | 6.1% | 143 | 5.4% | 7.0% | -37 | -1.5pp |
| 30 to 34 | 150 | 5.5% | 7.6% | 145 | 5.5% | 5.5% | +5 | 0.0pp |
| 35 to 39 | 145 | 5.3% | 5.8% | 143 | 5.4% | 5.5% | +2 | -0.1pp |
| 40 to 44 | 181 | 6.6% | 6.7% | 174 | 6.6% | 6.4% | +7 | 0.0pp |
| 45 to 49 | 181 | 6.6% | 6.5% | 150 | 5.7% | 5.8% | +31 | +0.9pp |
| 50 to 54 | 191 | 7.0% | 6.8% | 190 | 7.2% | 7.3% | +1 | -0.2pp |
| 55 to 59 | 192 | 7.0% | 7.6% | 231 | 8.8% | 8.4% | -39 | -1.8pp |
| 60 to 64 | 250 | 9.1% | 8.6% | 223 | 8.5% | 7.8% | +27 | +0.6pp |
| 65 to 69 | 191 | 7.0% | 6.7% | 225 | 8.6% | 7.4% | -34 | -1.6pp |
| 70 to 74 | 180 | 6.6% | 5.7% | 134 | 5.1% | 4.6% | +46 | +1.5pp |
| 75 to 79 | 111 | 4.0% | 3.4% | 75 | 2.9% | 2.4% | +36 | +1.1pp |
| 80 to 84 | 53 | 1.9% | 1.5% | 25 | 1.0% | 0.9% | +28 | +0.9pp |
| 85 and over | 19 | 0.7% | 0.4% | 28 | 1.1% | 0.7% | -9 | -0.4pp |
| Total | 2,746 | 100.0% | 100.0% | 2,631 | 100.0% | 100.0% | +115 | 0.0pp |