Residents of St. Jean, Town—Ville — Sub-district E, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 5 | ocain | bernard | M | 55 | Roman Catholic | Irish | Ireland | Dealer, merchant etc. (Wholesale & retail trade) | 120 |
| 7 | ocain | george | M | 23 | Roman Catholic | Irish | Quebec | Clerk, nfs | 120 |
| 11 | ocain | james | M | 45 | Roman Catholic | Irish | Quebec | Insurance Salesmen and agent | 41 |
| 12 | ocain | john | M | 16 | Roman Catholic | Irish | Quebec | No Occupation Listed | 41 |
| 13 | ocain | mary | F | 9 | Roman Catholic | Irish | Quebec | No Occupation Listed | 41 |
| 9 | ocain | mary | F | 14 | Roman Catholic | Irish | Quebec | No Occupation Listed | 120 |
| 8 | ocain | rosa | F | 18 | Roman Catholic | Irish | Quebec | No Occupation Listed | 120 |
| 6 | ocain | sophie | F | 50 | Roman Catholic | Canadian | Quebec | No Occupation Listed | 120 |
| 15 | ocain | wm | M | 12 | Roman Catholic | Irish | United States | No Occupation Listed | 41 |
| 20 | oconnor | wallace | M | 20 | Anglican | Irish | Quebec | Clerk, nfs | 28 |
| 10 | oligny | aurise | F | 11 | Roman Catholic | French | Quebec | No Occupation Listed | 324 |
| 22 | oligny | baptiste | M | 37 | Roman Catholic | French | Quebec | Day labourers (e.g journalier) | 26 |
| 9 | oligny | emelie | F | 33 | Roman Catholic | French | Quebec | Washing and laundry services | 324 |
| 15 | oligny | esther | F | 28 | Roman Catholic | French | Quebec | No Occupation Listed | 311 |
| 24 | oligny | eugene | M | 3 | Roman Catholic | French | Quebec | No Occupation Listed | 26 |
| 12 | oligny | ferdinand | M | 8 | Roman Catholic | French | Quebec | No Occupation Listed | 324 |
| 12 | oligny | francois | M | 77 | Roman Catholic | French | Quebec | No Occupation Listed | 311 |
| 14 | oligny | gilbert | M | 28 | Roman Catholic | French | Quebec | Workers nfs | 311 |
| 16 | oligny | marie | F | 0 | Roman Catholic | French | Quebec | No Occupation Listed | 311 |
| 11 | oligny | mathilda | F | 10 | Roman Catholic | French | Quebec | No Occupation Listed | 324 |
| 13 | oligny | pierre | M | 7 | Roman Catholic | French | Quebec | No Occupation Listed | 324 |
| 13 | oligny | rosalie | F | 62 | Roman Catholic | French | Quebec | No Occupation Listed | 311 |
| 23 | oligny | virginie | F | 22 | Roman Catholic | French | Quebec | No Occupation Listed | 26 |
| 19 | olmstead | martha | F | 34 | Episcopal | American | United States | No Occupation Listed | 240 |
| 18 | olmstead | william | M | 31 | Episcopal | American | United States | canvasser | 240 |
| 3 | osgood | julia | F | 42 | Anglican | English | Quebec | No Occupation Listed | 10 |
| 4 | osgood | julia | F | 15 | Anglican | English | Quebec | No Occupation Listed | 10 |
| 5 | osgood | ruperta | F | 13 | Anglican | English | Quebec | No Occupation Listed | 10 |
| 2 | osgood | w | M | 57 | Anglican | English | Quebec | Postmasters and postmistresses | 10 |
| 17 | ostiguy | alphonse | M | 23 | Roman Catholic | French | Quebec | Clerk, nfs | 44 |
| 20 | ouimet | emile | M | 1 | Roman Catholic | French | Quebec | No Occupation Listed | 305 |
| 18 | ouimet | joseph | M | 10 | Roman Catholic | French | Quebec | No Occupation Listed | 305 |
| 19 | ouimet | vital | M | 7 | Roman Catholic | French | Quebec | No Occupation Listed | 305 |
| 18 | ouimette | azilda | F | 17 | Roman Catholic | French | Quebec | Seamstress | 259 |
| 20 | ouimette | henri | M | 13 | Roman Catholic | French | Quebec | No Occupation Listed | 259 |
| 19 | ouimette | margaret | F | 16 | Roman Catholic | French | Quebec | No Occupation Listed | 259 |
| 17 | owen | alice | F | 9 | Anglican | English | England | No Occupation Listed | 137 |
| 18 | owen | anna | F | 6 | Anglican | English | United States | No Occupation Listed | 137 |
| 20 | owen | caroline | F | 0 | Anglican | English | Quebec | No Occupation Listed | 137 |
| 15 | owen | john | M | 28 | Anglican | English | England | Pottery and ceramics makers | 137 |
| 19 | owen | john | M | 4 | Anglican | English | Quebec | No Occupation Listed | 137 |
| 16 | owen | rachael | F | 30 | Anglican | English | England | No Occupation Listed | 137 |