Townland of Mullaghsandall which contains Cullyvully Clachan
| Year | Population | Houses |
| 1841 | 103 | 20 |
| 1851 | 84 | 20 |
| 1861 | 105 | 20 |
| 1871 | 102 | 18 |
| 1881 | 98 | 18 |
| 1891 | 92 | 14 |
| 1901 | 77 | 13 |
| 1911 | 57 | 12 |
| 1926 | 52 | 12 |
These figures have been copied from the official Census of Population of Ireland for each of the years.
About a third of the population of the townland of Mullaghsandall lived in Cullyvully clachan.