Residents of Hillier — Sub-district E, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 23 | oconnell | eliza | F | 64 | Roman Catholic | Irish | Ireland | No Occupation Listed | 22 |
| 24 | oconnell | elizabeth | F | 32 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 25 | oconnell | james | M | 23 | Roman Catholic | Irish | Ontario | Stone carvers or cutters and stone yard workers | 22 |
| 22 | oconnell | lawrence | M | 66 | Roman Catholic | Irish | Ireland | Stone masons | 22 |
| 18 | orser | emma | F | 5 | Methodist | German | Ontario | No Occupation Listed | 87 |
| 17 | orser | henry | M | 7 | Methodist | German | Ontario | No Occupation Listed | 87 |
| 16 | orser | mary | F | 26 | Methodist | German | Ontario | No Occupation Listed | 87 |
| 19 | orser | ralph | M | 1 | Methodist | German | Ontario | No Occupation Listed | 87 |
| 15 | orser | randolph | M | 27 | Anglican | German | Ontario | Farmers, general and nfs | 87 |
| 25 | osborne | arthur | M | 6 | Methodist | English | Ontario | No Occupation Listed | 237 |
| 24 | osborne | jane | F | 33 | Methodist | English | Ontario | No Occupation Listed | 237 |
| 1 | osborne | mary | F | 4 | Methodist | English | Ontario | No Occupation Listed | 237 |
| 23 | osborne | richard | M | 37 | Methodist | American | Ontario | Dealer, merchant etc. (Wholesale & retail trade) | 237 |
| 13 | osterhout | hannah | F | 58 | Methodist | Nova Scotian | Ontario | No Occupation Listed | 140 |
| 3 | osterhout | henrietta | F | 46 | Methodist | German | Ontario | No Occupation Listed | 156 |
| 2 | osterhout | john | M | 52 | Methodist | German | Ontario | Farmers, general and nfs | 156 |
| 12 | osterhout | john | M | 60 | Methodist | American | Ontario | Millers and related workers | 140 |
| 4 | osterhout | margery | F | 14 | Methodist | German | Ontario | No Occupation Listed | 156 |
| 2 | owens | phebe | F | 39 | Methodist | Canadian | Ontario | Servants nfs | 145 |