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, 5 to 9 year olds was the largest age group among residents in Kilcummin, accounting for 14.9% (34 people). This share was higher than Isaac (R) (7.9%). Since 2016, the biggest change was in 15 to 19 year olds, which decreased by 300 people and 4.3 percentage points.
Section overview
Age structure - Five year age groups
Kilcummin - Total persons (Usual residence)
This table summarises five year age groups for Kilcummin in 2021 for persons, with comparison against Isaac (R) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Kilcummin, with comparison markers for Isaac (R).
0 to 4
2021 count
32
% of total
14.0%
Change from 2016
+7.8pp
32
14.0%
+7.8pp
5 to 9
2021 count
34
% of total
14.9%
Change from 2016
+8.6pp
34
14.9%
+8.6pp
10 to 14
2021 count
11
% of total
4.8%
Change from 2016
-1.3pp
11
4.8%
-1.3pp
15 to 19
2021 count
6
% of total
2.6%
Change from 2016
-4.3pp
6
2.6%
-4.3pp
20 to 24
2021 count
12
% of total
5.3%
Change from 2016
-0.5pp
12
5.3%
-0.5pp
25 to 29
2021 count
25
% of total
11.0%
Change from 2016
+5.6pp
25
11.0%
+5.6pp
30 to 34
2021 count
22
% of total
9.6%
Change from 2016
+3.7pp
22
9.6%
+3.7pp
35 to 39
2021 count
32
% of total
14.0%
Change from 2016
+9.6pp
32
14.0%
+9.6pp
40 to 44
2021 count
28
% of total
12.3%
Change from 2016
+7.3pp
28
12.3%
+7.3pp
45 to 49
2021 count
0
% of total
0.0%
Change from 2016
-5.6pp
0
0.0%
-5.6pp
50 to 54
2021 count
10
% of total
4.4%
Change from 2016
-1.9pp
10
4.4%
-1.9pp
55 to 59
2021 count
0
% of total
0.0%
Change from 2016
-5.7pp
0
0.0%
-5.7pp
60 to 64
2021 count
14
% of total
6.1%
Change from 2016
+0.6pp
14
6.1%
+0.6pp
65 to 69
2021 count
3
% of total
1.3%
Change from 2016
-4.1pp
3
1.3%
-4.1pp
70 to 74
2021 count
8
% of total
3.5%
Change from 2016
-1.9pp
8
3.5%
-1.9pp
75 to 79
2021 count
7
% of total
3.1%
Change from 2016
-1.8pp
7
3.1%
-1.8pp
80 to 84
2021 count
0
% of total
0.0%
Change from 2016
-4.1pp
0
0.0%
-4.1pp
85 and over
2021 count
0
% of total
0.0%
Change from 2016
-4.1pp
0
0.0%
-4.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-245
+7.8pp
5 to 9
-246
+8.6pp
10 to 14
-258
-1.3pp
15 to 19
-300
-4.3pp
20 to 24
-244
-0.5pp
25 to 29
-216
+5.6pp
30 to 34
-238
+3.7pp
35 to 39
-165
+9.6pp
40 to 44
-193
+7.3pp
45 to 49
-249
-5.6pp
50 to 54
-272
-1.9pp
55 to 59
-255
-5.7pp
60 to 64
-231
+0.6pp
65 to 69
-239
-4.1pp
70 to 74
-230
-1.9pp
75 to 79
-210
-1.8pp
80 to 84
-184
-4.1pp
85 and over
-181
-4.1pp
Data table
Five year age groups for Kilcummin. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Isaac (R).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Isaac (R)% | Count | % | Isaac (R)% | Count | pp | |
| 0 to 4 | 32 | 14.0% | 7.2% | 277 | 6.2% | 9.7% | -245 | +7.8pp |
| 5 to 9 | 34 | 14.9% | 7.9% | 280 | 6.3% | 9.2% | -246 | +8.6pp |
| 10 to 14 | 11 | 4.8% | 6.3% | 269 | 6.1% | 6.4% | -258 | -1.3pp |
| 15 to 19 | 6 | 2.6% | 4.9% | 306 | 6.9% | 4.9% | -300 | -4.3pp |
| 20 to 24 | 12 | 5.3% | 6.8% | 256 | 5.8% | 6.1% | -244 | -0.5pp |
| 25 to 29 | 25 | 11.0% | 9.3% | 241 | 5.4% | 8.8% | -216 | +5.6pp |
| 30 to 34 | 22 | 9.6% | 9.5% | 260 | 5.9% | 10.3% | -238 | +3.7pp |
| 35 to 39 | 32 | 14.0% | 9.1% | 197 | 4.4% | 8.6% | -165 | +9.6pp |
| 40 to 44 | 28 | 12.3% | 7.3% | 221 | 5.0% | 8.0% | -193 | +7.3pp |
| 45 to 49 | 0 | 0.0% | 7.3% | 249 | 5.6% | 6.6% | -249 | -5.6pp |
| 50 to 54 | 10 | 4.4% | 6.8% | 282 | 6.3% | 6.7% | -272 | -1.9pp |
| 55 to 59 | 0 | 0.0% | 6.3% | 255 | 5.7% | 5.5% | -255 | -5.7pp |
| 60 to 64 | 14 | 6.1% | 4.6% | 245 | 5.5% | 3.8% | -231 | +0.6pp |
| 65 to 69 | 3 | 1.3% | 2.7% | 242 | 5.4% | 2.4% | -239 | -4.1pp |
| 70 to 74 | 8 | 3.5% | 1.9% | 238 | 5.4% | 1.4% | -230 | -1.9pp |
| 75 to 79 | 7 | 3.1% | 1.1% | 217 | 4.9% | 0.8% | -210 | -1.8pp |
| 80 to 84 | 0 | 0.0% | 0.6% | 184 | 4.1% | 0.4% | -184 | -4.1pp |
| 85 and over | 0 | 0.0% | 0.5% | 181 | 4.1% | 0.4% | -181 | -4.1pp |
| Total | 228 | 100.0% | 100.0% | 4,441 | 100.0% | 100.0% | -4,213 | 0.0pp |