Residents of Collingwood, Town—Ville — Sub-district C, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 10 | inulfoyle | frank | M | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 52 |
| 23 | ironsides | ann | F | 20 | Episcopal | English | England | No Occupation Listed | 136 |
| 25 | ironsides | annie | F | 5 | Episcopal | Scottish | Ontario | No Occupation Listed | 136 |
| 24 | ironsides | fanny | F | 7 | Episcopal | Scottish | Ontario | No Occupation Listed | 136 |
| 1 | ironsides | fred | M | 3 | Episcopal | Scottish | Ontario | No Occupation Listed | 136 |
| 22 | ironsides | james | M | 31 | Episcopal | Scottish | Ontario | Butchers | 136 |
| 2 | ironsides | james | M | 0 | Episcopal | Scottish | Ontario | No Occupation Listed | 136 |
| 9 | irwin | thomas | M | 20 | Episcopal | Irish | Ontario | No Occupation Listed | 281 |
| 25 | isaac | john | M | 83 | Methodist | Irish | Ireland | No Occupation Listed | 175 |
| 1 | isaacs | elizabeth | F | 40 | Methodist | Irish | Ireland | No Occupation Listed | 175 |