Residents of Galt, Town—Ville — Sub-district D, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 11 | oates | grace | F | 35 | Presbyterian | English | England | No Occupation Listed | 147 |
| 10 | oates | philippa | F | 63 | Presbyterian | English | England | No Occupation Listed | 147 |
| 21 | obrine | mary | F | 19 | Roman Catholic | Irish | Ireland | Servants nfs | 197 |
| 6 | ohanley | agnes | F | 11 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 164 |
| 1 | ohanley | angus | M | 40 | Roman Catholic | Scottish | Scotland | Messengers | 164 |
| 5 | ohanley | catharine | F | 13 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 164 |
| 4 | ohanley | charles | M | 15 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 164 |
| 8 | ohanley | daniel | M | 7 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 164 |
| 11 | ohanley | david | M | 0 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 164 |
| 9 | ohanley | jessie | F | 5 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 164 |
| 3 | ohanley | john | M | 16 | Roman Catholic | Scottish | Ontario | Messengers | 164 |
| 10 | ohanley | loretto | F | 2 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 164 |
| 2 | ohanley | mary | F | 36 | Roman Catholic | Scottish | Scotland | No Occupation Listed | 164 |
| 7 | ohanley | rebecca | F | 9 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 164 |
| 5 | oliver | agnes | F | 16 | Presbyterian | Scottish | Ontario | No Occupation Listed | 52 |
| 9 | oliver | andrew | M | 21 | Presbyterian | Scottish | Ontario | Metal moulders and coremakers and workers in… | 124 |
| 12 | oliver | andrew | M | 30 | Presbyterian | Scottish | Ontario | Other production and related workers nec | 51 |
| 4 | oliver | ann | F | 39 | Presbyterian | Scottish | Ontario | No Occupation Listed | 52 |
| 5 | oliver | annie | F | 35 | Baptist | Scottish | England | No Occupation Listed | 290 |
| 1 | oliver | belle | F | 19 | Presbyterian | Scottish | Ontario | Milliners | 490 |
| 9 | oliver | donald | M | 6 | Presbyterian | Scottish | Ontario | No Occupation Listed | 52 |
| 8 | oliver | edward | M | 7 | Presbyterian | Scottish | Ontario | No Occupation Listed | 52 |
| 4 | oliver | edward | M | 55 | Presbyterian | Scottish | England | No Occupation Listed | 290 |
| 9 | oliver | elizabeth | F | 50 | Methodist | Scottish | Scotland | No Occupation Listed | 296 |
| 8 | oliver | jane | F | 54 | Presbyterian | Scottish | Scotland | No Occupation Listed | 124 |
| 4 | oliver | john | M | 60 | Presbyterian | Scottish | Scotland | Millwrights | 105 |
| 5 | oliver | john | M | 7 | Presbyterian | Scottish | Ontario | No Occupation Listed | 183 |
| 4 | oliver | lizzie | F | 30 | Presbyterian | Scottish | Ontario | No Occupation Listed | 183 |
| 21 | oliver | maggie | F | 22 | Presbyterian | English | Ontario | No Occupation Listed | 429 |
| 7 | oliver | marian | F | 11 | Presbyterian | Scottish | Ontario | No Occupation Listed | 52 |
| 6 | oliver | mary | F | 14 | Presbyterian | Scottish | Ontario | No Occupation Listed | 52 |
| 25 | oliver | mary | M | 22 | Presbyterian | Scottish | Ontario | Milliners | 490 |
| 24 | oliver | maude | F | 0 | Wesleyan Methodist | Scottish | Ontario | No Occupation Listed | 485 |
| 23 | oliver | nettie | F | 20 | Wesleyan Methodist | German | Ontario | No Occupation Listed | 485 |
| 6 | oliver | norman | M | 3 | Presbyterian | Scottish | Ontario | No Occupation Listed | 183 |
| 17 | oliver | robert | M | 41 | Anglican | Welsh | England | Labourers nfs | 84 |
| 18 | oliver | sarah | F | 40 | Anglican | English | England | No Occupation Listed | 84 |
| 3 | oliver | thomas | M | 49 | Presbyterian | Scottish | Ontario | Farmers, general and nfs | 52 |
| 20 | oliver | thomas | M | 24 | Presbyterian | Scottish | Ontario | No Occupation Listed | 429 |
| 3 | oliver | william | M | 30 | Presbyterian | Scottish | Ontario | Machinists | 183 |
| 15 | onslow | caroline | F | 0 | Anglican | English | Ontario | No Occupation Listed | 107 |
| 14 | onslow | harriett | F | 0 | Anglican | English | Ontario | No Occupation Listed | 107 |
| 11 | onslow | henrietta | F | 35 | Anglican | English | Ontario | No Occupation Listed | 107 |
| 13 | onslow | lillian | F | 3 | Anglican | English | Ontario | No Occupation Listed | 107 |
| 12 | onslow | richard | M | 6 | Anglican | English | Ontario | No Occupation Listed | 107 |
| 10 | onslow | walton | M | 37 | Anglican | English | England | Railway agents (US) and clerks | 107 |
| 9 | orton | phoebe | F | 24 | Presbyterian | Irish | Ontario | Dressmakers | 421 |
| 24 | osborn | william | M | 22 | Anglican | English | Ontario | Clerk, nfs | 325 |
| 7 | ovens | christina | F | 63 | Presbyterian | Scottish | Scotland | No Occupation Listed | 340 |
| 10 | ovens | janette | F | 21 | Presbyterian | Scottish | Ontario | Teachers (unspecified) | 340 |
| 8 | ovens | john | M | 26 | Presbyterian | Scottish | Ontario | Watch and Clock Makers | 340 |
| 9 | ovens | margaret | F | 23 | Presbyterian | Scottish | Ontario | No Occupation Listed | 340 |
| 11 | ovens | rabena | F | 20 | Presbyterian | Scottish | Ontario | No Occupation Listed | 340 |
| 12 | ovens | robert | M | 14 | Presbyterian | Scottish | Ontario | No Occupation Listed | 340 |
| 13 | ovens | robert | M | 66 | Presbyterian | Scottish | Scotland | Stone masons | 340 |
| 6 | ovens | william | M | 68 | Presbyterian | Scottish | Scotland | No Occupation Listed | 340 |