Residents of Mount Forest, Town—Ville — Sub-district E, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 10 | ireland | charles | M | 18 | Methodist | American | Ontario | Blacksmiths | 144 |
| 11 | ireland | edward | M | 17 | Methodist | American | Ontario | Other Machinery Fitters and Machine Assemblers | 144 |
| 13 | ireland | emma | F | 22 | Methodist | American | Ontario | No Occupation Listed | 144 |
| 7 | ireland | francis | F | 53 | Methodist | American | United States | No Occupation Listed | 144 |
| 9 | ireland | ida | F | 20 | Methodist | American | Ontario | No Occupation Listed | 144 |
| 6 | ireland | isaac | M | 59 | Free Thinker | American | United States | Machinists | 144 |
| 12 | ireland | mary | F | 24 | Methodist | American | Ontario | Dressmakers | 144 |
| 8 | ireland | theodore | F | 25 | Methodist | American | Ontario | Dressmakers | 144 |
| 10 | irons | charles | M | 60 | Baptist | Scottish | Scotland | Metal moulders and coremakers and workers in… | 44 |
| 3 | irwin | alexr | M | 69 | Anglican | Irish | Ireland | Farmers, general and nfs | 392 |
| 4 | irwin | cecilia | F | 71 | Anglican | Irish | Ireland | No Occupation Listed | 392 |
| 6 | irwin | cecilia | F | 23 | Anglican | Irish | Ontario | Dressmakers | 392 |
| 7 | irwin | charles | M | 27 | Anglican | Irish | Ontario | Farmers, general and nfs | 392 |
| 8 | irwin | mary | F | 22 | Anglican | Irish | Ontario | Servants nfs | 392 |
| 5 | irwin | pamela | F | 25 | Anglican | Irish | Ontario | Dressmakers | 392 |