Residents of Orangeville, Town—Ville — Sub-district A, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 21 | inglis | george | M | 5 | Presbyterian | Scottish | Ontario | No Occupation Listed | 171 |
| 19 | inglis | margret | F | 43 | Presbyterian | Scottish | Scotland | Seamstress | 171 |
| 20 | inglis | william | M | 8 | Presbyterian | Scottish | Scotland | No Occupation Listed | 171 |
| 8 | ingraham | ann | F | 52 | Anglican | Irish | Ireland | No Occupation Listed | 189 |
| 20 | ingraham | elizabeth | F | 28 | Anglican | Irish | Ontario | No Occupation Listed | 61 |
| 11 | ingraham | john | M | 18 | Anglican | Irish | Ontario | No Occupation Listed | 189 |
| 10 | ingraham | margaret | F | 20 | Anglican | Irish | Ontario | No Occupation Listed | 189 |
| 9 | ingraham | mary | F | 22 | Anglican | Irish | Ontario | No Occupation Listed | 189 |
| 12 | ingraham | rebacca | F | 14 | Anglican | Irish | Ontario | No Occupation Listed | 189 |
| 24 | irvine | annie | F | 8 | Anglican | Irish | Ontario | No Occupation Listed | 29 |
| 3 | irvine | ethel | F | 1 | Anglican | Irish | Ontario | No Occupation Listed | 29 |
| 1 | irvine | james | M | 5 | Anglican | Irish | Ontario | No Occupation Listed | 29 |
| 2 | irvine | norman | M | 3 | Anglican | Irish | Ontario | No Occupation Listed | 29 |
| 22 | irvine | robert | M | 40 | Presbyterian | Irish | Ireland | Painters, nfs | 29 |
| 23 | irvine | susan | F | 35 | Anglican | Irish | Ireland | No Occupation Listed | 29 |
| 25 | irvine | william | M | 7 | Anglican | Irish | Ontario | No Occupation Listed | 29 |
| 14 | irving | edward | M | 30 | Anglican | English | England | No Occupation Listed | 241 |
| 15 | irving | margaret | F | 28 | Anglican | Irish | Ontario | No Occupation Listed | 241 |
| 5 | irwin | christopher | M | 29 | Presbyterian | Irish | Ontario | Blacksmiths | 209 |
| 9 | irwin | elizabeth | F | 39 | Presbyterian | Scottish | Ontario | No Occupation Listed | 101 |
| 14 | irwin | ellar | F | 10 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 219 |
| 3 | irwin | francis | M | 49 | Anglican | Irish | Ireland | Government administrators | 13 |
| 7 | irwin | george | M | 55 | Anglican | Irish | Ireland | No Occupation Listed | 13 |
| 17 | irwin | james | M | 14 | Anglican | English | Ontario | No Occupation Listed | 160 |
| 12 | irwin | james | M | 14 | Primitive Methodist | Irish | Ontario | river drivers | 219 |
| 4 | irwin | jane | F | 45 | Anglican | Irish | Ontario | No Occupation Listed | 13 |
| 10 | irwin | jane | F | 17 | Presbyterian | Scottish | Ontario | Servants nfs | 101 |
| 9 | irwin | jane | F | 41 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 219 |
| 16 | irwin | jane | F | 6 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 219 |
| 12 | irwin | john | M | 35 | Anglican | Irish | Ontario | Teamsters (inc. mine driver, etc.) | 9 |
| 12 | irwin | josephine | F | 5 | Presbyterian | Scottish | Ontario | No Occupation Listed | 101 |
| 6 | irwin | martha | F | 5 | Anglican | Irish | Ontario | No Occupation Listed | 13 |
| 10 | irwin | mary | F | 60 | Anglican | Irish | Ireland | No Occupation Listed | 8 |
| 6 | irwin | mary | F | 29 | Anglican | Irish | Ontario | No Occupation Listed | 209 |
| 10 | irwin | mary | F | 17 | Primitive Methodist | Irish | Ontario | Servants nfs | 219 |
| 15 | irwin | matilda | F | 8 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 219 |
| 7 | irwin | robert | M | 25 | Presbyterian | Irish | Ontario | Blacksmiths | 209 |
| 8 | irwin | samuel | M | 41 | Anglican | Irish | Ontario | Boot and shoemakers and repairers | 219 |
| 17 | irwin | samuel | M | 3 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 219 |
| 11 | irwin | sarah | F | 16 | Anglican | Irish | Ontario | No Occupation Listed | 8 |
| 18 | irwin | sydney | M | 1 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 219 |
| 11 | irwin | thomas | M | 16 | Primitive Methodist | Irish | Ontario | river drivers | 219 |
| 5 | irwin | william | M | 17 | Anglican | Irish | Ontario | law student | 13 |
| 11 | irwin | william | M | 15 | Presbyterian | Scottish | Ontario | No Occupation Listed | 101 |
| 13 | irwn | william | M | 12 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 219 |
| 9 | island | george | M | 38 | Wesleyan Methodist | Irish | Ireland | Blacksmiths | 273 |
| 12 | island | george | M | 5 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 273 |
| 13 | island | john | M | 3 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 273 |
| 11 | island | sarah | F | 14 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 273 |
| 10 | island | susan | F | 34 | Wesleyan Methodist | Irish | Ireland | No Occupation Listed | 273 |
| 14 | itrypo | henry | M | 27 | Anglican | English | Ontario | Saddler and harness maker | 46 |