Residents of Orangeville, Town—Ville — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 14 | ogston | agnus | F | 18 | Presbyterian | Scottish | Ontario | No Occupation Listed | 138 |
| 12 | ogston | elizabeth | F | 58 | Presbyterian | Scottish | Scotland | No Occupation Listed | 138 |
| 13 | ogston | joseph | M | 28 | Presbyterian | Scottish | Ontario | No Occupation Listed | 138 |
| 11 | ogston | thomas | M | 63 | Presbyterian | Scottish | Scotland | Mason nfs or combined | 138 |
| 18 | oprey | raachel | F | 37 | Episcopal Methodist | German | Ontario | No Occupation Listed | 11 |
| 17 | oprey | william | M | 60 | Episcopal Methodist | Irish | Illegible | Carpenters | 11 |
| 9 | orr | samuel | M | 23 | Anglican | Irish | Ontario | Postmen | 145 |
| 11 | osborne | mary | F | 21 | Primitive Methodist | English | Ontario | No Occupation Listed | 127 |
| 10 | osborne | thomas | M | 27 | Primitive Methodist | English | England | Artist nfs and art teachers | 127 |