Residents of Kingston, Rideau, Ward—Quartier — Sub-district B, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 22 | oaks | minnie | F | 22 | Presbyterian | English | Ontario | No Occupation Listed | 331 |
| 4 | oconnell | ann | F | 35 | Wesleyan Methodist | Irish | Ireland | No Occupation Listed | 16 |
| 13 | oconner | johanna | F | 70 | Roman Catholic | Irish | Ontario | No Occupation Listed | 248 |
| 25 | ogrady | timothy | M | 25 | Roman Catholic | Irish | Ontario | Boot and shoemakers and repairers | 293 |
| 19 | oliver | fanny | F | 12 | Anglican | English | Ontario | No Occupation Listed | 384 |
| 16 | oliver | frederick | M | 42 | Anglican | English | Ontario | No Occupation Listed | 384 |
| 21 | oliver | harriet | F | 3 | Anglican | English | Ontario | No Occupation Listed | 384 |
| 17 | oliver | jane | F | 36 | Anglican | English | Ontario | No Occupation Listed | 384 |
| 18 | oliver | maude | F | 14 | Anglican | English | Ontario | No Occupation Listed | 384 |
| 20 | oliver | susan | F | 8 | Anglican | English | Ontario | No Occupation Listed | 384 |
| 11 | oreilly | annie | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 7 |
| 8 | oreilly | bridget | F | 21 | Roman Catholic | Irish | Ontario | No Occupation Listed | 7 |
| 7 | oreilly | ellen | F | 40 | Roman Catholic | Irish | Ireland | No Occupation Listed | 7 |
| 9 | oreilly | george | M | 18 | Roman Catholic | Irish | Ontario | Blacksmiths | 7 |
| 10 | oreilly | james | M | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 7 |
| 13 | oreilly | johanna | F | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 7 |
| 12 | oreilly | nellie | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 7 |
| 6 | oreilly | patrick | M | 45 | Roman Catholic | Irish | Ireland | Boot and shoemakers and repairers | 7 |