1861 Census - surnames beginning with U
| Last Name | First Name | Age | Parish | Piece | Folio | Page |
| UNDERWOOD | Thomas | 54 | Castletown | 4414 | 9 | 63 |
| UNKNOWN | Unknown | 40 | Ramsey | 4429 | 39 | 176 |
| UNKNOWN | Unknown | 40 | Ramsey | 4429 | 39 | 176 |
| UNKNOWN | Unknown | 40 | Ramsey | 4429 | 39 | 176 |
| UNKNOWN | 9 Male | | Peel | 4428 | 77 | 5 |
| UNKNOWN | 8 Male | | Peel | 4428 | 77 | 6 |
| 5 MALES | Not given (5m) | | Ramsey | 4429 | 41 | 1 |
| UNSWORTH | Catherine | 8 | Douglas | 4419 | 47 | 13 |
| UNSWORTH | George W. | 12 | Douglas | 4419 | 47 | 13 |
| UNSWORTH | John J. | 3 dys | Douglas | 4419 | 47 | 13 |
| UNSWORTH | Margaret | 37 | Douglas | 4419 | 47 | 13 |
| UNSWORTH | Margaret Jane | 10 | Douglas | 4419 | 47 | 13 |
| UNSWORTH | Robert Alan | 5 | Douglas | 4419 | 47 | 13 |
| UNSWORTH | Thomas | 42 | Douglas | 4419 | 47 | 13 |
| UNSWORTH | Thomas Arthur | 3 | Douglas | 4419 | 47 | 13 |
| UNSWORTH | Walter R. | 2 | Douglas | 4419 | 47 | 13 |
| UNWISS | Grace | 49 | Braddan | 4412 | 29 | 85 |
| URIN | Catherine | 3 | Patrick | 4427 | 89 | 55 |
| URIN | Charlotte | 32 | Patrick | 4427 | 89 | 55 |
| URIN | Edmund | 42 | Patrick | 4427 | 89 | 55 |
| URIN | Edmund | 10 | Patrick | 4427 | 89 | 55 |
| URIN | John | 5 | Patrick | 4427 | 89 | 55 |
| URIN | Mary J. | 11 | Patrick | 4427 | 89 | 55 |
| URIN | Thomas | 1 | Patrick | 4427 | 89 | 55 |
| URIN | William | 9 | Patrick | 4427 | 89 | 55 |
| USHER | Emily | 9 | Douglas | 4419 | 83 | 30 |
| USHER | John | 14 | Douglas | 4419 | 83 | 30 |
| USHER | Julia | 15 | Douglas | 4419 | 83 | 30 |
| USHER | Mary Ann | 45 | Castletown | 4414 | 78 | 23 |