Residents of Georgina — Sub-district I, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 10 | oliver | allsdie | F | 5 | Presbyterian | Irish | Ontario | No Occupation Listed | 95 |
| 9 | oliver | arther | M | 7 | Presbyterian | Irish | Ontario | No Occupation Listed | 95 |
| 5 | oliver | elisah | M | 44 | Baptist | Irish | Ontario | Labourers nfs | 95 |
| 11 | oliver | elisha | M | 3 | Presbyterian | Irish | Ontario | No Occupation Listed | 95 |
| 12 | oliver | febaann | F | 0 | Presbyterian | Irish | Ontario | No Occupation Listed | 95 |
| 7 | oliver | rachel | F | 12 | Presbyterian | Irish | Ontario | No Occupation Listed | 95 |
| 6 | oliver | rose | F | 30 | Presbyterian | Irish | Ontario | No Occupation Listed | 95 |
| 8 | oliver | william | M | 10 | Presbyterian | Irish | Ontario | No Occupation Listed | 95 |
| 18 | oneal | annie | F | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 143 |
| 19 | oneal | charless | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 143 |
| 17 | oneal | elebeth | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 143 |
| 14 | oneal | francis | M | 21 | Roman Catholic | Irish | Ontario | Labourers nfs | 143 |
| 12 | oneal | john | M | 45 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 143 |
| 15 | oneal | john | M | 18 | Roman Catholic | Irish | Ontario | Labourers nfs | 143 |
| 16 | oneal | mary | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 143 |
| 20 | oneal | rittia | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 143 |
| 13 | oneal | sarah | F | 46 | Roman Catholic | Irish | Ontario | No Occupation Listed | 143 |
| 25 | orr | ann | F | 24 | Presbyterian | Irish | United States | No Occupation Listed | 41 |
| 2 | orr | james | M | 11 | Presbyterian | Irish | Ontario | No Occupation Listed | 41 |
| 1 | orr | jane | F | 13 | Presbyterian | Irish | Ontario | No Occupation Listed | 41 |
| 24 | orr | joseph | M | 42 | Presbyterian | Irish | Ireland | Farmers, general and nfs | 41 |
| 5 | orr | joseph | M | 0 | Presbyterian | Irish | Ontario | No Occupation Listed | 41 |
| 3 | orr | marget | F | 4 | Presbyterian | Irish | Ontario | No Occupation Listed | 41 |
| 4 | orr | william | M | 2 | Presbyterian | Irish | Ontario | No Occupation Listed | 41 |
| 12 | ouderkirk | allen | M | 3 | Methodist | German | Ontario | No Occupation Listed | 34 |
| 11 | ouderkirk | ameala | M | 4 | Methodist | German | Ontario | No Occupation Listed | 34 |
| 9 | ouderkirk | dinniah | F | 10 | Methodist | German | Ontario | No Occupation Listed | 34 |
| 6 | ouderkirk | elmira | F | 38 | Methodist | German | Ontario | No Occupation Listed | 34 |
| 7 | ouderkirk | gordon | M | 14 | Methodist | German | Ontario | No Occupation Listed | 34 |
| 10 | ouderkirk | henery | M | 8 | Methodist | German | Ontario | No Occupation Listed | 34 |
| 5 | ouderkirk | jacob | M | 37 | Methodist | German | Ontario | Labourers nfs | 34 |
| 13 | ouderkirk | joisee | F | 0 | Methodist | German | Ontario | No Occupation Listed | 34 |
| 8 | ouderkirk | mariah | F | 12 | Methodist | German | Ontario | No Occupation Listed | 34 |