Residents of Nissouri W-O — Sub-district F, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 7 | obrien | thomas | M | 10 | Presbyterian | Irish | Ontario | No Occupation Listed | 259 |
| 17 | odonovan | h | M | 38 | Roman Catholic | Irish | Ireland | Agent nfs | 277 |
| 8 | ohara | ann | F | 67 | Roman Catholic | Irish | Ireland | No Occupation Listed | 317 |
| 9 | ohara | ellen | F | 30 | Roman Catholic | Irish | Ontario | No Occupation Listed | 317 |
| 6 | oldershaw | h | M | 27 | Methodist | English | England | Labourers nfs | 332 |
| 7 | oldershaw | sarah | F | 24 | Methodist | English | England | No Occupation Listed | 332 |
| 7 | oliver | alice | F | 18 | Methodist | English | Ontario | No Occupation Listed | 269 |
| 2 | oliver | annie | F | 28 | Episcopal Methodist | English | Ontario | No Occupation Listed | 19 |
| 5 | oliver | benjamin | M | 46 | Methodist | English | Ontario | Farmers, general and nfs | 269 |
| 16 | oliver | charlotte | F | 0 | Methodist | English | Ontario | No Occupation Listed | 153 |
| 8 | oliver | daniel | M | 40 | Methodist | English | Ontario | Farmers, general and nfs | 153 |
| 1 | oliver | david | M | 30 | Episcopal Methodist | English | Ontario | Farmers, general and nfs | 19 |
| 11 | oliver | earnest | M | 6 | Methodist | English | Ontario | No Occupation Listed | 269 |
| 7 | oliver | eliza | F | 20 | Anglican | English | England | No Occupation Listed | 20 |
| 11 | oliver | eliza | F | 13 | Methodist | English | Ontario | No Occupation Listed | 153 |
| 13 | oliver | fanny | F | 9 | Methodist | English | Ontario | No Occupation Listed | 153 |
| 9 | oliver | ida | F | 14 | Methodist | English | Ontario | No Occupation Listed | 269 |
| 12 | oliver | isaac | M | 12 | Methodist | English | Ontario | No Occupation Listed | 153 |
| 6 | oliver | jane | F | 40 | Methodist | Irish | Ireland | No Occupation Listed | 269 |
| 3 | oliver | joseph | M | 4 | Episcopal Methodist | English | Ontario | No Occupation Listed | 19 |
| 6 | oliver | luke | M | 26 | Anglican | English | Ontario | Labourers nfs | 20 |
| 15 | oliver | maggie | F | 5 | Methodist | English | Ontario | No Occupation Listed | 153 |
| 14 | oliver | maria | F | 7 | Methodist | English | Ontario | No Occupation Listed | 153 |
| 4 | oliver | mary | F | 2 | Episcopal Methodist | English | Ontario | No Occupation Listed | 19 |
| 9 | oliver | mary | F | 24 | Methodist | English | Ontario | No Occupation Listed | 153 |
| 10 | oliver | mary | F | 15 | Methodist | English | Ontario | No Occupation Listed | 153 |
| 5 | oliver | rebbecca | F | 0 | Episcopal Methodist | English | Ontario | No Occupation Listed | 19 |
| 8 | oliver | sidney | M | 16 | Methodist | English | Ontario | Farmers, general and nfs | 269 |
| 10 | oliver | wesley | M | 7 | Methodist | English | Ontario | No Occupation Listed | 269 |
| 5 | orchard | elizabeth | F | 69 | Methodist | English | England | No Occupation Listed | 133 |
| 4 | orchard | nathaniel | M | 40 | Methodist | English | England | Farmers, general and nfs | 133 |
| 15 | otwell | edith | F | 5 | Methodist | English | Ontario | No Occupation Listed | 273 |
| 13 | otwell | edward | M | 10 | Methodist | English | Ontario | No Occupation Listed | 273 |
| 16 | otwell | ila | F | 3 | Methodist | English | Ontario | No Occupation Listed | 273 |
| 10 | otwell | jane | F | 32 | Methodist | English | Ontario | No Occupation Listed | 273 |
| 7 | otwell | john | M | 60 | | English | United States | Packers | 273 |
| 11 | otwell | john | M | 15 | Methodist | English | Ontario | No Occupation Listed | 273 |
| 8 | otwell | mary | F | 60 | | German | United States | No Occupation Listed | 273 |
| 14 | otwell | mary | F | 8 | Methodist | English | Ontario | No Occupation Listed | 273 |
| 9 | otwell | morris | M | 36 | | English | United States | Salespeople, wholesale or retail trade | 273 |
| 12 | otwell | william | M | 13 | Methodist | English | Ontario | No Occupation Listed | 273 |