Residents of Wilmot — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 9 | oberer | anna | F | 36 | Lutheran | German | Ontario | No Occupation Listed | 46 |
| 11 | oberer | betsey | F | 10 | Lutheran | German | Ontario | No Occupation Listed | 46 |
| 8 | oberer | casper | M | 41 | Lutheran | German | Germany | Farmers, general and nfs | 46 |
| 12 | oberer | elisa | F | 8 | Lutheran | German | Ontario | No Occupation Listed | 46 |
| 3 | oberer | gottlieb | M | 32 | Lutheran | German | Germany | Labourers nfs | 82 |
| 14 | oberer | herias | M | 3 | Lutheran | German | Ontario | No Occupation Listed | 46 |
| 10 | oberer | lea | F | 12 | Lutheran | German | Ontario | No Occupation Listed | 46 |
| 4 | oberer | louisa | F | 34 | Lutheran | German | Ontario | No Occupation Listed | 82 |
| 13 | oberer | lucinda | F | 5 | Lutheran | German | Ontario | No Occupation Listed | 46 |
| 15 | oberer | rachel | F | 1 | Lutheran | German | Ontario | No Occupation Listed | 46 |
| 17 | ochring | berhler | F | 20 | Roman Catholic | German | Ontario | Servants nfs | 16 |
| 6 | oconnor | minnie | F | 12 | Anglican | Irish | Ontario | No Occupation Listed | 120 |
| 7 | offord | elezebeth | F | 21 | Anglican | English | Ontario | Servants nfs | 45 |
| 13 | ogriege | elisbeth | F | 16 | Roman Catholic | German | Ontario | Servants nfs | 69 |
| 16 | ontario | catherina | F | 12 | Lutheran | German | Ontario | No Occupation Listed | 52 |
| 13 | ontario | john | M | 14 | Lutheran | German | Ontario | No Occupation Listed | 24 |
| 15 | oswald | aron | M | 12 | Mennonite | German | Ontario | No Occupation Listed | 9 |
| 15 | oswald | mary | F | 35 | Mennonite | Dutch | Ontario | Milliners | 111 |
| 5 | otto | abraham | M | 19 | Evangelical Association | German | Ontario | Farmers, general and nfs | 60 |
| 17 | otto | abraham | M | 3 | Lutheran | German | Ontario | No Occupation Listed | 75 |
| 10 | otto | almina | F | 6 | Evangelical Association | German | Ontario | No Occupation Listed | 60 |
| 6 | otto | amos | M | 18 | Evangelical Association | German | Ontario | Farmers, general and nfs | 60 |
| 4 | otto | amoz | M | 18 | Evangelical Association | German | Ontario | Farmers, general and nfs | 79 |
| 18 | otto | charles | M | 2 | Lutheran | German | Ontario | No Occupation Listed | 75 |
| 14 | otto | christian | M | 34 | Lutheran | German | Ontario | Farmers, general and nfs | 75 |
| 1 | otto | elizabeth | F | 23 | Evangelical Association | German | Ontario | No Occupation Listed | 134 |
| 7 | otto | emma | F | 13 | Evangelical Association | German | Ontario | No Occupation Listed | 60 |
| 2 | otto | john | M | 61 | Evangelical Association | German | Germany | Farmers, general and nfs | 60 |
| 25 | otto | john | M | 22 | Evangelical Association | German | Ontario | Farmers, general and nfs | 134 |
| 3 | otto | leah | F | 50 | Evangelical Association | German | Ontario | No Occupation Listed | 60 |
| 4 | otto | mary | F | 24 | Evangelical Association | German | Ontario | No Occupation Listed | 60 |
| 8 | otto | moses | M | 11 | Evangelical Association | German | Ontario | No Occupation Listed | 60 |
| 9 | otto | owen | M | 9 | Evangelical Association | German | Ontario | No Occupation Listed | 60 |
| 2 | otto | rosetta | F | 0 | Evangelical Association | German | Ontario | No Occupation Listed | 134 |
| 15 | otto | susanna | F | 31 | Lutheran | German | Ontario | No Occupation Listed | 75 |
| 16 | otto | william | M | 7 | Lutheran | German | Ontario | No Occupation Listed | 75 |