| 3 | obrien | joseph | M | 16 | Roman Catholic | Irish | Ontario | Cigar makers | 299 |
| 25 | obyrne | cathrine | F | 41 | Roman Catholic | Irish | Ireland | No Occupation Listed | 368 |
| 24 | obyrne | john | M | 48 | Roman Catholic | Irish | Ireland | Merchants, specified large-scale wholesaleing | 368 |
| 1 | oconnor | bridget | F | 17 | Roman Catholic | Irish | Ireland | Dressmakers | 59 |
| 4 | oconnor | john | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 59 |
| 25 | oconnor | mary | F | 40 | Roman Catholic | Irish | Ireland | No Occupation Listed | 59 |
| 2 | oconnor | mary | F | 15 | Roman Catholic | Irish | Ontario | Cigar makers | 59 |
| 24 | oconnor | michl | M | 65 | Roman Catholic | Irish | Ireland | Dealer, merchant etc. (Wholesale & retail trade) | 59 |
| 3 | oconnor | thomas | M | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 59 |
| 12 | odonohue | bridget | F | 50 | Roman Catholic | Irish | Ireland | Boarding and Lodging House Keepers and managers | 140 |
| 13 | odonohue | john | M | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 140 |
| 20 | odwyer | frank | M | 18 | Roman Catholic | Irish | Ontario | Coach, carriage, cart and wagon makers | 156 |
| 3 | oflaherty | john | M | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 79 |
| 4 | oflaherty | kate | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 79 |
| 2 | oflaherty | maria | F | 37 | Roman Catholic | Irish | Ontario | No Occupation Listed | 79 |
| 5 | oflaherty | mary | F | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 79 |
| 1 | oflaherty | mathew | M | 38 | Roman Catholic | Irish | Ireland | Hotel Keepers and Managers | 79 |
| 18 | ogorman | daniel | M | 45 | Roman Catholic | Irish | Ireland | Auctioneers | 227 |
| 23 | ogorman | daniel | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 227 |
| 25 | ogorman | frank | M | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 227 |
| 21 | ogorman | john | M | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 227 |
| 24 | ogorman | kaltse | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 227 |
| 19 | ogorman | mary | F | 40 | Roman Catholic | Irish | Ireland | No Occupation Listed | 227 |
| 20 | ogorman | mary | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 227 |
| 22 | ogorman | rose | F | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 227 |
| 2 | oheum | catherine | F | 56 | Roman Catholic | Irish | Ireland | No Occupation Listed | 21 |
| 4 | oheum | catherine | F | 23 | Roman Catholic | Irish | United States | No Occupation Listed | 21 |
| 9 | oheum | daniel | M | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 21 |
| 1 | oheum | david | M | 58 | Roman Catholic | Irish | Ireland | Dealer, merchant etc. (Wholesale & retail trade) | 21 |
| 5 | oheum | john | M | 21 | Roman Catholic | Irish | United States | Carpenters | 21 |
| 7 | oheum | margaret | F | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 21 |
| 3 | oheum | mary | F | 25 | Roman Catholic | Irish | Ireland | Dressmakers | 21 |
| 6 | oheum | michael | M | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 21 |
| 8 | oheum | william | M | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 21 |
| 14 | ohiggin | catherine | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 289 |
| 10 | ohiggin | isabella | F | 39 | Roman Catholic | English | England | No Occupation Listed | 289 |
| 12 | ohiggin | james | M | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 289 |
| 11 | ohiggin | john | M | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 289 |
| 9 | ohiggin | joseph | M | 44 | Roman Catholic | Irish | Ireland | Dealer, merchant etc. (Wholesale & retail trade) | 289 |
| 13 | ohiggin | joseph | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 289 |
| 14 | okeefe | mary | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 397 |
| 22 | oliver | alfred | M | 6 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 201 |
| 18 | oliver | dinah | F | 34 | Wesleyan Methodist | English | England | No Occupation Listed | 201 |
| 21 | oliver | frank | M | 8 | Wesleyan Methodist | English | England | No Occupation Listed | 201 |
| 17 | oliver | james | M | 35 | Wesleyan Methodist | English | England | Machinists | 201 |
| 23 | oliver | jane | F | 0 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 201 |
| 19 | oliver | jessie | F | 12 | Wesleyan Methodist | English | England | No Occupation Listed | 201 |
| 20 | oliver | richard | M | 10 | Wesleyan Methodist | English | England | No Occupation Listed | 201 |
| 25 | olmstead | annie | F | 30 | Methodist | English | Ontario | No Occupation Listed | 294 |
| 16 | oloughlin | agnes | F | 8 | Roman Catholic | Irish | Iceland | No Occupation Listed | 251 |
| 14 | oloughlin | elizabeth | F | 31 | Roman Catholic | Irish | Ireland | No Occupation Listed | 251 |
| 13 | oloughlin | john | M | 60 | Roman Catholic | Irish | Ireland | Tailors and tailoresses | 251 |
| 17 | oloughlin | john | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 251 |
| 15 | oloughlin | mary | F | 10 | Roman Catholic | Irish | Ireland | No Occupation Listed | 251 |
| 12 | omara | judith | F | 26 | Roman Catholic | Irish | Ontario | No Occupation Listed | 153 |
| 13 | omara | nellie | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 153 |
| 14 | omara | patrick | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 153 |
| 11 | omara | timothy | M | 30 | Roman Catholic | Irish | Ireland | Postal or telegraph clerk nfs | 153 |
| 14 | omeara | hannah | F | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 121 |
| 17 | omeara | julia | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 121 |
| 13 | omeara | martin | M | 53 | Roman Catholic | Irish | Ireland | Hotel Keepers and Managers | 121 |
| 22 | omeara | martin | M | 26 | Roman Catholic | Irish | Ontario | Hirers out | 121 |
| 16 | omeara | mary | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 121 |
| 15 | omeara | michael | M | 20 | Roman Catholic | Irish | Ontario | Clerk, nfs | 121 |
| 8 | oneil | ellen | F | 50 | Roman Catholic | Irish | Ireland | Housekeeper nfs | 249 |
| 17 | orange | john | M | 57 | Roman Catholic | Irish | Ireland | Tailors and tailoresses | 128 |
| 18 | orange | mary | F | 55 | Roman Catholic | Irish | Ireland | Dealer, merchant etc. (Wholesale & retail trade) | 128 |
| 10 | orchard | annie | F | 22 | Wesleyan Methodist | Scottish | Ontario | No Occupation Listed | 262 |
| 11 | orchard | florence | F | 1 | United Methodist/Bible Christian | English | Ontario | No Occupation Listed | 262 |
| 9 | orchard | john | M | 23 | United Methodist/Bible Christian | English | Ontario | Machinists | 262 |
| 12 | orchard | mary | F | 0 | United Methodist/Bible Christian | English | United States | No Occupation Listed | 262 |
| 20 | oumett | george | M | 23 | Roman Catholic | French | Quebec | Ambiguous responses | 111 |
| 21 | oumett | lizzie | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 111 |
| 22 | owen | george | M | 25 | Anglican | English | England | Dealer, merchant etc. (Wholesale & retail trade) | 169 |
| 23 | owen | mary | F | 24 | Anglican | English | England | No Occupation Listed | 169 |
| 3 | owens | john | M | 37 | Anglican | English | Ontario | Agent nfs | 122 |
| 4 | owens | mariah | F | 26 | Anglican | English | Ontario | No Occupation Listed | 122 |
| 5 | owens | maud | F | 2 | Anglican | English | Ontario | No Occupation Listed | 122 |