Residents of Toronto, St. Thomas' Ward—Quartier — Sub-district C, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 13 | inman | alice | F | 22 | Anglican | English | Ontario | No Occupation Listed | 10 |
| 11 | inman | esther | F | 55 | Anglican | English | Ontario | No Occupation Listed | 10 |
| 15 | inman | frederick | M | 17 | Anglican | English | Ontario | No Occupation Listed | 10 |
| 12 | inman | katie | F | 24 | Anglican | English | Ontario | No Occupation Listed | 10 |
| 14 | inman | maggie | F | 20 | Anglican | English | Ontario | No Occupation Listed | 10 |
| 22 | innis | andrew | M | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 23 |
| 20 | innis | annee | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 23 |
| 21 | innis | emmilly | F | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 23 |
| 17 | innis | mary | F | 53 | Roman Catholic | Irish | Ireland | No Occupation Listed | 23 |
| 19 | innis | mary | F | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 23 |
| 16 | innis | thomas | M | 52 | Roman Catholic | Irish | Ireland | Labourers nfs | 23 |
| 18 | innis | william | M | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 23 |
| 8 | inrig | alexander | M | 4 | Baptist | Scottish | Ontario | No Occupation Listed | 316 |
| 6 | inrig | ann | F | 35 | Baptist | Scottish | Scotland | No Occupation Listed | 316 |
| 5 | inrig | donald | M | 35 | Baptist | Scottish | Scotland | Boot and shoemakers and repairers | 316 |
| 10 | inrig | donald | M | 0 | Baptist | Scottish | Ontario | No Occupation Listed | 316 |
| 9 | inrig | francis | M | 2 | Baptist | Scottish | Ontario | No Occupation Listed | 316 |
| 7 | inrig | lizia | F | 7 | Baptist | Scottish | Ontario | No Occupation Listed | 316 |
| 19 | iredale | bertie | M | 9 | Anglican | English | Ontario | No Occupation Listed | 432 |
| 18 | iredale | woodfred | M | 10 | Anglican | English | Ontario | No Occupation Listed | 432 |
| 19 | irelin | alfred | M | 9 | Congregationalist | English | Ontario | No Occupation Listed | 161 |
| 16 | irelin | elizabeth | F | 38 | Congregationalist | English | United States | No Occupation Listed | 161 |
| 20 | irelin | frank | M | 6 | Congregationalist | English | Ontario | No Occupation Listed | 161 |
| 15 | irelin | harry | M | 40 | Congregationalist | English | England | Construction workers nec | 161 |
| 18 | irelin | minnie | F | 12 | Congregationalist | English | Ontario | No Occupation Listed | 161 |
| 17 | irelin | william | M | 14 | Congregationalist | English | Ontario | No Occupation Listed | 161 |
| 20 | ironfield | maryann | F | 48 | Congregationalist | English | England | No Occupation Listed | 306 |
| 19 | ironfield | thomas | M | 49 | Congregationalist | English | England | Gardeners nfs | 306 |
| 19 | irwin | andrew | M | 12 | Anglican | Irish | Ontario | No Occupation Listed | 211 |
| 16 | irwin | fanny | F | 36 | Anglican | Irish | Ireland | No Occupation Listed | 211 |
| 20 | irwin | margret | F | 10 | Anglican | Irish | Ontario | No Occupation Listed | 211 |
| 21 | irwin | mary | F | 7 | Anglican | Irish | Ontario | No Occupation Listed | 211 |
| 18 | irwin | robert | M | 14 | Anglican | Irish | Ontario | Cigar makers | 211 |
| 17 | irwin | william | M | 15 | Anglican | Irish | Ontario | Cigar makers | 211 |
| 16 | isaac | elizabeth | F | 54 | Methodist | English | Wisconsin | No Occupation Listed | 484 |
| 15 | isaac | john | M | 59 | Methodist | Irish | Wisconsin | Collectors (cash and account) | 484 |