Residents of Uxbridge — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 10 | oberin | bernard | M | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 164 |
| 7 | oberin | elamor | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 164 |
| 6 | oberin | francis | M | 48 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 164 |
| 8 | oberin | john | M | 22 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 164 |
| 13 | oberin | margaret | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 164 |
| 11 | oberin | mary | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 164 |
| 9 | oberin | rose | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 164 |
| 12 | oberin | thomas | M | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 164 |
| 10 | oconnor | arthur | M | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 49 |
| 2 | oconnor | jane | F | 39 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 49 |
| 7 | oconnor | jas | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 49 |
| 8 | oconnor | jos | M | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 49 |
| 9 | oconnor | margret | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 49 |
| 1 | oconnor | michael | M | 38 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 49 |
| 23 | oldham | able | M | 13 | Primitive Methodist | English | Ontario | No Occupation Listed | 183 |
| 3 | oldham | abraham | M | 32 | Primitive Methodist | English | England | Agent nfs | 181 |
| 1 | oldham | ada | F | 4 | Primitive Methodist | English | Ontario | No Occupation Listed | 183 |
| 5 | oldham | annie | F | 8 | Primitive Methodist | English | Ontario | No Occupation Listed | 181 |
| 22 | oldham | arthur | M | 15 | Primitive Methodist | English | Ontario | No Occupation Listed | 183 |
| 25 | oldham | e | F | 6 | Primitive Methodist | English | Ontario | No Occupation Listed | 183 |
| 19 | oldham | elliot | M | 42 | Primitive Methodist | English | England | Farmers, general and nfs | 183 |
| 24 | oldham | j | M | 11 | Primitive Methodist | English | Ontario | No Occupation Listed | 183 |
| 4 | oldham | jane | F | 31 | Primitive Methodist | English | England | No Occupation Listed | 181 |
| 8 | oldham | jennott | F | 3 | Primitive Methodist | English | Ontario | No Occupation Listed | 181 |
| 21 | oldham | job | M | 17 | Primitive Methodist | English | Ontario | No Occupation Listed | 183 |
| 6 | oldham | kate | F | 6 | Primitive Methodist | English | Ontario | No Occupation Listed | 181 |
| 20 | oldham | levinia | F | 43 | Primitive Methodist | English | England | No Occupation Listed | 183 |
| 9 | oldham | minnie | F | 0 | Primitive Methodist | English | Ontario | No Occupation Listed | 181 |
| 7 | oldham | violet | F | 4 | Primitive Methodist | English | Ontario | No Occupation Listed | 181 |
| 8 | oneil | a | F | 43 | Wesleyan Methodist | German | Ontario | No Occupation Listed | 115 |
| 18 | oneil | eliza | F | 18 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 82 |
| 16 | oneil | gordon | M | 49 | Wesleyan Methodist | Irish | Ireland | Farmers, general and nfs | 82 |
| 7 | oneil | john | M | 39 | Wesleyan Methodist | Irish | Ireland | Labourers nfs | 115 |
| 20 | oneil | lettice | F | 12 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 82 |
| 19 | oneil | m | F | 16 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 82 |
| 17 | oneil | mary | F | 44 | Wesleyan Methodist | Irish | Ireland | No Occupation Listed | 82 |
| 25 | oneill | bridget | F | 30 | Roman Catholic | Irish | Ontario | No Occupation Listed | 156 |
| 24 | oneill | thomas | M | 34 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 156 |
| 15 | orchard | albina | F | 45 | Wesleyan Methodist | English | Quebec | No Occupation Listed | 124 |
| 1 | orchard | anne | F | 70 | Wesleyan Methodist | English | England | No Occupation Listed | 92 |
| 19 | orchard | arthur | M | 10 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 124 |
| 20 | orchard | bertha | F | 6 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 124 |
| 21 | orchard | catherine | F | 5 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 124 |
| 18 | orchard | charles | M | 12 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 124 |
| 24 | orchard | clara | F | 2 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 92 |
| 23 | orchard | elizabeth | F | 40 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 92 |
| 22 | orchard | john | M | 41 | Wesleyan Methodist | English | England | Farmers, general and nfs | 92 |
| 25 | orchard | john | M | 1 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 92 |
| 16 | orchard | john | M | 17 | Wesleyan Methodist | English | Ontario | Labourers nfs | 124 |
| 17 | orchard | sarah | F | 15 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 124 |
| 14 | orchard | simeon | M | 50 | Wesleyan Methodist | English | England | Farmers, general and nfs | 124 |
| 12 | orsborn | c | M | 9 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 73 |
| 16 | orsborn | c | M | 0 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 73 |
| 11 | orsborn | ellen | F | 35 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 73 |
| 15 | orsborn | h | M | 3 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 73 |
| 13 | orsborn | l | F | 7 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 73 |
| 14 | orsborn | m | F | 5 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 73 |
| 10 | orsborn | sidney | M | 34 | Wesleyan Methodist | German | Ontario | Labourers nfs | 73 |
| 17 | orton | ann | F | 70 | Quaker/Society of Friends | English | Ontario | No Occupation Listed | 165 |
| 20 | ottewell | allie | F | 10 | Primitive Methodist | English | Ontario | No Occupation Listed | 27 |
| 21 | ottewell | f | M | 30 | Primitive Methodist | English | England | Blacksmiths | 27 |
| 22 | ottewell | fredrick | M | 5 | Primitive Methodist | English | Ontario | No Occupation Listed | 27 |
| 19 | ottewell | joseph | M | 24 | Primitive Methodist | English | Ontario | Veterinarians | 27 |
| 18 | ottewell | martha | F | 50 | Primitive Methodist | English | England | No Occupation Listed | 27 |
| 17 | ottewell | samuel | M | 50 | Primitive Methodist | English | England | Blacksmiths | 27 |
| 16 | oxtly | martha | F | 8 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 185 |
| 14 | oxtly | nancy | F | 50 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 185 |
| 13 | oxtly | thomas | M | 62 | Wesleyan Methodist | English | England | Farmers, general and nfs | 185 |
| 15 | oxtly | w | M | 18 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 185 |