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 Kalbarri, accounting for 11.6% (171 people). This share was higher than Northampton (S) (9.7%). Since 2016, the biggest change was in 50 to 54 year olds, which decreased by 333 people and 1.4 percentage points.
Section overview
Age structure - Five year age groups
Kalbarri - Total persons (Usual residence)
This table summarises five year age groups for Kalbarri in 2021 for persons, with comparison against Northampton (S) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Kalbarri, with comparison markers for Northampton (S).
0 to 4
2021 count
61
% of total
4.1%
Change from 2016
-0.2pp
61
4.1%
-0.2pp
5 to 9
2021 count
61
% of total
4.1%
Change from 2016
-2.5pp
61
4.1%
-2.5pp
10 to 14
2021 count
64
% of total
4.3%
Change from 2016
-2.5pp
64
4.3%
-2.5pp
15 to 19
2021 count
58
% of total
3.9%
Change from 2016
-3.5pp
58
3.9%
-3.5pp
20 to 24
2021 count
46
% of total
3.1%
Change from 2016
-3.0pp
46
3.1%
-3.0pp
25 to 29
2021 count
52
% of total
3.5%
Change from 2016
-1.3pp
52
3.5%
-1.3pp
30 to 34
2021 count
67
% of total
4.5%
Change from 2016
-0.2pp
67
4.5%
-0.2pp
35 to 39
2021 count
73
% of total
4.9%
Change from 2016
-0.3pp
73
4.9%
-0.3pp
40 to 44
2021 count
70
% of total
4.7%
Change from 2016
-1.9pp
70
4.7%
-1.9pp
45 to 49
2021 count
96
% of total
6.5%
Change from 2016
-1.3pp
96
6.5%
-1.3pp
50 to 54
2021 count
104
% of total
7.0%
Change from 2016
-1.4pp
104
7.0%
-1.4pp
55 to 59
2021 count
128
% of total
8.7%
Change from 2016
+1.7pp
128
8.7%
+1.7pp
60 to 64
2021 count
171
% of total
11.6%
Change from 2016
+5.1pp
171
11.6%
+5.1pp
65 to 69
2021 count
122
% of total
8.3%
Change from 2016
+1.1pp
122
8.3%
+1.1pp
70 to 74
2021 count
148
% of total
10.0%
Change from 2016
+5.4pp
148
10.0%
+5.4pp
75 to 79
2021 count
65
% of total
4.4%
Change from 2016
+2.4pp
65
4.4%
+2.4pp
80 to 84
2021 count
46
% of total
3.1%
Change from 2016
+1.2pp
46
3.1%
+1.2pp
85 and over
2021 count
24
% of total
1.6%
Change from 2016
-0.4pp
24
1.6%
-0.4pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-160
-0.2pp
5 to 9
-281
-2.5pp
10 to 14
-288
-2.5pp
15 to 19
-326
-3.5pp
20 to 24
-269
-3.0pp
25 to 29
-196
-1.3pp
30 to 34
-174
-0.2pp
35 to 39
-194
-0.3pp
40 to 44
-272
-1.9pp
45 to 49
-308
-1.3pp
50 to 54
-333
-1.4pp
55 to 59
-236
+1.7pp
60 to 64
-164
+5.1pp
65 to 69
-252
+1.1pp
70 to 74
-89
+5.4pp
75 to 79
-41
+2.4pp
80 to 84
-53
+1.2pp
85 and over
-81
-0.4pp
Data table
Five year age groups for Kalbarri. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Northampton (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Northampton (S)% | Count | % | Northampton (S)% | Count | pp | |
| 0 to 4 | 61 | 4.1% | 4.0% | 221 | 4.3% | 4.5% | -160 | -0.2pp |
| 5 to 9 | 61 | 4.1% | 5.6% | 342 | 6.6% | 5.6% | -281 | -2.5pp |
| 10 to 14 | 64 | 4.3% | 4.9% | 352 | 6.8% | 5.1% | -288 | -2.5pp |
| 15 to 19 | 58 | 3.9% | 3.5% | 384 | 7.4% | 4.1% | -326 | -3.5pp |
| 20 to 24 | 46 | 3.1% | 3.0% | 315 | 6.1% | 3.9% | -269 | -3.0pp |
| 25 to 29 | 52 | 3.5% | 2.9% | 248 | 4.8% | 3.3% | -196 | -1.3pp |
| 30 to 34 | 67 | 4.5% | 4.8% | 241 | 4.7% | 4.0% | -174 | -0.2pp |
| 35 to 39 | 73 | 4.9% | 5.1% | 267 | 5.2% | 4.6% | -194 | -0.3pp |
| 40 to 44 | 70 | 4.7% | 5.2% | 342 | 6.6% | 5.9% | -272 | -1.9pp |
| 45 to 49 | 96 | 6.5% | 5.7% | 404 | 7.8% | 7.3% | -308 | -1.3pp |
| 50 to 54 | 104 | 7.0% | 6.9% | 437 | 8.4% | 8.1% | -333 | -1.4pp |
| 55 to 59 | 128 | 8.7% | 8.7% | 364 | 7.0% | 9.4% | -236 | +1.7pp |
| 60 to 64 | 171 | 11.6% | 9.7% | 335 | 6.5% | 10.4% | -164 | +5.1pp |
| 65 to 69 | 122 | 8.3% | 9.9% | 374 | 7.2% | 8.7% | -252 | +1.1pp |
| 70 to 74 | 148 | 10.0% | 8.4% | 237 | 4.6% | 6.9% | -89 | +5.4pp |
| 75 to 79 | 65 | 4.4% | 5.8% | 106 | 2.0% | 3.8% | -41 | +2.4pp |
| 80 to 84 | 46 | 3.1% | 2.9% | 99 | 1.9% | 2.2% | -53 | +1.2pp |
| 85 and over | 24 | 1.6% | 2.5% | 105 | 2.0% | 1.9% | -81 | -0.4pp |
| Total | 1,478 | 100.0% | 100.0% | 5,177 | 100.0% | 100.0% | -3,699 | 0.0pp |