Residents of Maryborough — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 19 | odgen | john | M | 52 | Baptist | English | — | Farmers, general and nfs | 197 |
| 23 | odgen | john | M | 24 | Baptist | English | Ontario | Teachers (unspecified) | 197 |
| 21 | odgen | mary | F | 27 | Baptist | English | Ontario | No Occupation Listed | 197 |
| 22 | odgen | pennie | F | 25 | Baptist | English | Ontario | No Occupation Listed | 197 |
| 20 | odgen | sarah | F | 55 | Baptist | Irish | Ontario | No Occupation Listed | 197 |
| 24 | odgen | william | M | 14 | Baptist | English | Ontario | No Occupation Listed | 197 |
| 2 | ogrady | bridget | F | 37 | Roman Catholic | Irish | Ireland | No Occupation Listed | 191 |
| 10 | ogrady | daniel | M | 23 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 210 |
| 18 | ogrady | edward | M | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 210 |
| 15 | ogrady | james | M | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 210 |
| 1 | ogrady | john | M | 52 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 191 |
| 8 | ogrady | john | M | 57 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 210 |
| 13 | ogrady | john | M | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 210 |
| 12 | ogrady | margaret | F | 21 | Roman Catholic | Irish | Ontario | No Occupation Listed | 210 |
| 6 | ogrady | margret | F | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 191 |
| 4 | ogrady | mary | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 191 |
| 11 | ogrady | mary | F | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 210 |
| 16 | ogrady | philmena | F | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 210 |
| 5 | ogrady | rosa | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 191 |
| 9 | ogrady | sarah | F | 40 | Roman Catholic | Irish | Ireland | No Occupation Listed | 210 |
| 19 | ogrady | thimothy | M | 85 | Roman Catholic | Irish | Ireland | No Occupation Listed | 211 |
| 17 | ogrady | thomas | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 210 |
| 3 | ogrady | william | M | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 191 |
| 14 | ogrady | william | M | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 210 |
| 20 | oppedshanen | cathrin | F | 7 | Lutheran | German | Ontario | No Occupation Listed | 94 |
| 19 | oppedshanen | elizabeth | F | 26 | Lutheran | Irish | Ontario | No Occupation Listed | 94 |
| 23 | oppedshanen | george | M | 1 | Lutheran | German | Ontario | No Occupation Listed | 94 |
| 18 | oppedshanen | henry | M | 40 | Lutheran | German | Germany | Farmers, general and nfs | 94 |
| 21 | oppedshanen | john | M | 6 | Lutheran | German | Ontario | No Occupation Listed | 94 |
| 22 | oppedshanen | william | M | 4 | Lutheran | German | Ontario | No Occupation Listed | 94 |
| 3 | ott | elizabeth | F | 37 | Methodist | Irish | Ireland | No Occupation Listed | 59 |
| 5 | ott | john | M | 12 | Methodist | German | Ontario | No Occupation Listed | 59 |
| 6 | ott | margret | F | 1 | Methodist | German | Ontario | No Occupation Listed | 59 |
| 2 | ott | philip | M | 41 | Lutheran | German | Ontario | Farmers, general and nfs | 59 |
| 4 | ott | william | M | 15 | Methodist | German | Ontario | No Occupation Listed | 59 |
| 14 | otto | herman | M | 12 | Lutheran | German | Ontario | Labourers nfs | 101 |
| 15 | overton | ann | F | 30 | Anglican | Illegible | Ontario | No Occupation Listed | 142 |
| 18 | overton | janett | F | 1 | Anglican | Irish | Ontario | No Occupation Listed | 142 |
| 16 | overton | john | M | 4 | Anglican | Irish | Ontario | No Occupation Listed | 142 |
| 17 | overton | martha | F | 2 | Anglican | Irish | Ontario | No Occupation Listed | 142 |
| 14 | overton | william | M | 45 | Anglican | Irish | Ontario | No Occupation Listed | 142 |
| 25 | owens | albert | M | 6 | Anglican | Irish | Ontario | No Occupation Listed | 220 |
| 20 | owens | anne | F | 34 | Anglican | Irish | Ireland | No Occupation Listed | 220 |
| 1 | owens | anne | F | 5 | Anglican | Irish | Ontario | No Occupation Listed | 220 |
| 24 | owens | frances | M | 8 | Anglican | Irish | Ontario | No Occupation Listed | 220 |
| 2 | owens | george | M | 2 | Anglican | Irish | Ontario | No Occupation Listed | 220 |
| 19 | owens | james | M | 36 | Anglican | Irish | Ontario | Farmers, general and nfs | 220 |
| 22 | owens | john | M | 10 | Anglican | Irish | Ontario | No Occupation Listed | 220 |
| 21 | owens | samuel | M | 12 | Anglican | Irish | Ontario | No Occupation Listed | 220 |
| 23 | owens | william | M | 9 | Anglican | Irish | Ontario | No Occupation Listed | 220 |
| 6 | oxby | elisabeth | F | 20 | Methodist | English | Ontario | No Occupation Listed | 295 |
| 12 | oxby | ferdrick | M | 1 | Methodist | English | Ontario | No Occupation Listed | 295 |
| 8 | oxby | georgean | F | 15 | Methodist | English | Ontario | No Occupation Listed | 295 |
| 10 | oxby | halta | F | 8 | Methodist | English | Ontario | No Occupation Listed | 295 |
| 9 | oxby | james | M | 12 | Methodist | English | Ontario | No Occupation Listed | 295 |
| 7 | oxby | luke | M | 18 | Methodist | English | Ontario | No Occupation Listed | 295 |
| 11 | oxby | paulina | F | 2 | Methodist | English | Ontario | No Occupation Listed | 295 |
| 4 | oxby | sharlott | F | 43 | Methodist | English | Ontario | No Occupation Listed | 295 |
| 3 | oxby | william | M | 47 | Methodist | English | Ontario | Farmers, general and nfs | 295 |
| 5 | oxby | william | M | 22 | Methodist | English | Ontario | Farmers, general and nfs | 295 |