Residents of Waterloo, T-V — Sub-district F, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 1 | obom | henri | M | 9 | Episcopal | English | Quebec | No Occupation Listed | 262 |
| 2 | obom | joseph | M | 8 | Episcopal | Blank | Quebec | No Occupation Listed | 262 |
| 25 | obom | julie | F | 43 | Roman Catholic | French Canadian | Quebec | No Occupation Listed | 262 |
| 4 | obom | mary | F | 13 | Episcopal | Blank | Quebec | No Occupation Listed | 262 |
| 24 | obom | william | M | 39 | Episcopal | English | Quebec | Labourers nfs | 262 |
| 3 | obom | william | M | 5 | Episcopal | Blank | Quebec | No Occupation Listed | 262 |
| 6 | odell | mary | F | 64 | Wesleyan Methodist | Scottish | Quebec | No Occupation Listed | 158 |
| 4 | oleary | ellen | F | 14 | Roman Catholic | Irish | Quebec | No Occupation Listed | 163 |
| 2 | oleary | hannah | F | 52 | Roman Catholic | Irish | Ireland | No Occupation Listed | 163 |
| 1 | oleary | michael | M | 50 | Roman Catholic | Irish | Ireland | Labourers nfs | 163 |
| 3 | oleary | michael | M | 19 | Roman Catholic | Irish | Quebec | Railway breakmen | 163 |
| 5 | oleary | patrick | M | 12 | Roman Catholic | Irish | Quebec | No Occupation Listed | 163 |
| 2 | oryan | alice | F | 2 | Roman Catholic | Scottish | Quebec | No Occupation Listed | 295 |
| 23 | oryan | c | F | 11 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 295 |
| 25 | oryan | catherine | F | 7 | Roman Catholic | Scottish | Quebec | No Occupation Listed | 295 |
| 20 | oryan | hermin | M | 40 | Roman Catholic | Scottish | Scotland | Machinists | 295 |
| 24 | oryan | john | M | 9 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 295 |
| 22 | oryan | margaret | F | 13 | Roman Catholic | Scottish | Quebec | No Occupation Listed | 295 |
| 21 | oryan | mary | F | 37 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 295 |
| 1 | oryan | thomas | M | 5 | Roman Catholic | Scottish | Quebec | No Occupation Listed | 295 |