Residents of Harriston, T-V — Sub-district C, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 19 | irvine | alexander | M | 33 | Presbyterian | Scottish | Scotland | Blacksmiths | 359 |
| 21 | irvine | flora | F | 8 | Presbyterian | Scottish | Ontario | No Occupation Listed | 359 |
| 22 | irvine | john | M | 4 | Presbyterian | Scottish | Ontario | No Occupation Listed | 359 |
| 23 | irvine | lettwes | F | 2 | Presbyterian | Scottish | Ontario | No Occupation Listed | 359 |
| 20 | irvine | margeret | F | 30 | Presbyterian | Scottish | Ontario | No Occupation Listed | 359 |
| 9 | irwin | alaxander | M | 12 | Methodist | Irish | Ontario | No Occupation Listed | 298 |
| 10 | irwin | alice | F | 10 | Methodist | Irish | Ontario | No Occupation Listed | 298 |
| 6 | irwin | elizabeth | F | 18 | Methodist | Irish | Ontario | No Occupation Listed | 298 |
| 8 | irwin | frances | F | 14 | Methodist | Irish | Ontario | No Occupation Listed | 298 |
| 14 | irwin | gwyn | F | 18 | Presbyterian | Irish | Ontario | Servants nfs | 207 |
| 5 | irwin | john | M | 19 | Methodist | Irish | Ontario | No Occupation Listed | 298 |
| 3 | irwin | mary | F | 44 | Methodist | Scottish | Scotland | No Occupation Listed | 298 |
| 4 | irwin | racheal | F | 21 | Methodist | Irish | Ontario | No Occupation Listed | 298 |
| 7 | irwin | thomas | M | 16 | Methodist | Irish | Ontario | No Occupation Listed | 298 |
| 11 | irwin | william | M | 8 | Methodist | Irish | Ontario | No Occupation Listed | 298 |
| 2 | isensen | annie | F | 34 | Methodist | German | Ontario | Cabinet makers | 284 |
| 3 | isensen | elizabeth | F | 10 | Methodist | English | Ontario | No Occupation Listed | 284 |
| 6 | isensen | freddy | M | 0 | Methodist | English | Ontario | No Occupation Listed | 284 |
| 5 | isensen | maggie | M | 3 | Methodist | English | Ontario | No Occupation Listed | 284 |
| 1 | isensen | william | M | 36 | Methodist | English | Ontario | Cabinet makers | 284 |
| 4 | isensen | william | M | 6 | Methodist | English | Ontario | No Occupation Listed | 284 |
| 19 | iunnary | james | M | 36 | Presbyterian | Scottish | Scotland | No Occupation Listed | 173 |
| 20 | iunnary | margaret | F | 24 | Presbyterian | Scottish | Ontario | No Occupation Listed | 173 |
| 4 | ivel | john | M | 26 | Presbyterian | Scottish | Ontario | Bricklayers | 76 |
| 5 | ivel | mary | F | 20 | Presbyterian | Scottish | Ontario | Bricklayers | 76 |
| 6 | ivel | robert | M | 24 | Presbyterian | Scottish | Ontario | Labourers nfs | 76 |