Age Structure (Irish 1821 classification)
| Age Groups used in 1821 Irish Census | 1821 |
|---|---|
| 0 to 4 |
3,628
|
| 5 to 9 |
3,254
|
| 10 to 14 |
3,010
|
| 15 to 19 |
2,945
|
| 20 to 29 |
2,858
|
| 30 to 39 |
1,939
|
| 40 to 49 |
1,371
|
| 50 to 59 |
1,051
|
| 60 to 69 |
445
|
| 70 to 79 |
162
|
| 80 to 89 |
26
|
| 90 to 99 |
5
|
| 100 Up |
2
|
| Age unknown |
15
|
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This system of four "Levels" appears in the census Small Area Statistics for 2001, 2011 and 2021/2, and the full definitions of the levels include a wide range of broadly equivalent qualifications.