Townlands of Ballyteerim and Altagore which contain Ballyteerim Clachan
Ballyteerim Altagore
| Year | Population | Houses | Year | Population | Houses | |
| 1841 | 41 | 7 | 1841 | 48 | 9 | |
| 1851 | 19 | 4 | 1851 | 48 | 8 | |
| 1861 | 15 | 5 | 1861 | 62 | 8 | |
| 1871 | 20 | 5 | 1871 | 55 | 8 | |
| 1881 | 18 | 4 | 1881 | 41 | 6 | |
| 1891 | 9 | 4 | 1891 | 30 | 6 | |
| 1901 | 6 | 3 | 1901 | 40 | 5 | |
| 1911 | 8 | 3 | 1911 | 35 | 5 | |
| 1926 | 2 | 1 | 1926 | 17 | 5 |
Combined Populations of Ballyteerim & Altagore
| Year | Population | Houses |
| 1841 | 89 | 16 |
| 1851 | 67 | 12 |
| 1861 | 77 | 13 |
| 1871 | 75 | 13 |
| 1881 | 59 | 10 |
| 1891 | 39 | 10 |
| 1901 | 46 | 8 |
| 1911 | 43 | 8 |
| 1926 | 19 | 6 |
These figures have been copied from the official Census of Population of Ireland for each of the years.