| Surname | Forenames | Relation to Head | Marital Status | Age | Occupation | Birthplace | Census | Address | Reference | Source | Other Information |
| Udall | George | Lodger | Unmarried | 19 | Policeman | Ireland | 1881 | Churchknowle | RG11/2099 Film1341506 Dist. Corfe Castle, Wareham, Dorset | | |
| Uligan (Holahan see 1871 Census) | Barney | Lodger | Unmarried | 35 | General Labourer | Ireland | 1881 | Rainford, Lancashire | RG11/3741 Schedule 149 | | |
| Underwood | Catherine | | | 73 | | Ireland | 1851 | Clifton & Comp, Derbyshire | Ref.2146 Folio 206 | | |
| Underwood | Magdalene | | | 74 | | Ireland | 1881 | Hillingdon,Middlesex | RG11/0022 Folio 133 Page 38 | | |
| Unsworth | Catherine | Daughter | Unmarried | 21 | | Rainford, Lancashire | 1871 | Rainford, Lancashire | | | |
| Unsworth | John | Son | Unmarried | 20 | | Orrell, Lancashire | 1871 | Rainford, Lancashire | | | |
| Unsworth | Mary | Wife | Married | 37 | | Ireland | 1861 | Rainford. Lancashire | Schedule 78 | | |
| Unsworth | Mary | Wife | Married | 49 | | Dublin, Ireland | 1871 | Rainford, Lancashire | | | |
| Unsworth | Mary | Daughter | | 13 | | Rainford, Lancashire | 1871 | Rainford, Lancashire | | | |
| Unsworth | Mary | Head | Widow | 63 | | Ireland | 1881 | Rainford, Lancashire | | | |
| Unsworth | Ralph | Head | Married | | | Orrell, Lancashire | 1871 | Rainford. Lancashire | | | |
| Unsworth | Ralph | Son | | 10 | | Rainford, Lancashire | 1871 | Rainford, Lancashire | | | |
| Unsworth | Ralph | Grandson | | 1 | | Rainford, Lancashire | 1871 | Rainford, Lancashire | | | |
| Unsworth | Ralph | Son | Unmarried | 19 | Coal Miner | Rainford, Lancashire | 1881 | Rainford. Lancashire | RG11/3741 Schedule 111 | | |
| Unsworth | Ralph | Grandson | Unmarried | 12 | Scholar | Rainford, Lancashire | 1881 | Rainford. Lancashire | RG11/3741 Schedule 111 | | |
| Unsworth | Thomas | Son | | 15 | | Rainford, Lancashire | 1871 | Rainford, Lancashire | | | |
| Unsworth | Thomas | Son | Unmarried | 24 | Coal Miner | Rainford, Lancashire | 1881 | Rainford. Lancashire | RG11/3741 Schedule 111 | | |
| Upton | Richard | Head | | 55 | Police Constable Metropolitan | Newcastle, Limerick, Ireland | 1891 | 11 Park Road, Forest Hill, Lewisham, London | RG12/526 Folio 87 Page 24 | | |
| Urben | Hilda M. | | | 9 | | Dublin, Ireland | 1881 | Hillingdon,Middlesex | RG11/0027 Folio 91 Page 29 | | |
| Usher | William A. | | | 31 | | Co.Galway, Ireland | 1881 | Hillingdon,Middlesex | RG11/0023 Folio 100 Page 3 | | |
| Uylamy | Margaret | Lodger | Married | 30 | Dress maker | Ireland | 1851 | Ashton under Lyne, Ryecroft | HO 107/2233 folio 336 | | |