| Year | Roman Catholic | Church of Ireland | All Others |
|---|---|---|---|
| * | * | * | * |
| 1861 | 89.4 | 8.5 | 2.1 |
| 1871 | 89.2 | 8.4 | 2.4 |
| 1881 | 89.5 | 8.2 | 2.3 |
| 1891 | 89.3 | 8.3 | 2.4 |
| 1901 | 89.3 | 8.2 | 2.5 |
| 1911 | 89.6 | 7.9 | 2.5 |
| 1926 | 92.6 | 5.5 | 1.9 |
| 1936 | 93.4 | 4.9 | 1.7 |
| 1946 | 94.3 | 4.2 | 1.5 |
| 1961 | 94.9 | 3.7 | 1.4 |
| 1971 | 93.9 | 3.3 | 2.8 |
| 1981 | 93.0 | 2.7 | 4.3 |
| 1991 | 91.6 | 2.4 | 6.0 |