Residents of St. Thomas, City—Cité — Sub-district C, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 9 | iles | ella | F | 23 | Anglican | Blank | United States | No Occupation Listed | 22 |
| 10 | iles | jane | F | 2 | Anglican | Blank | Ontario | No Occupation Listed | 22 |
| 5 | ilsardi | maggie | F | 28 | Anglican | English | Ontario | No Occupation Listed | 260 |
| 4 | ilsardi | william | M | 36 | Presbyterian | Dutch | Netherlands | Professional engineer, specialisation unknown | 260 |
| 17 | ingleby | george | M | 11 | Baptist | English | Ontario | No Occupation Listed | 30 |
| 18 | ingleby | lillian | F | 7 | Baptist | English | Ontario | No Occupation Listed | 30 |
| 16 | ingleby | sarah | F | 30 | Baptist | English | England | No Occupation Listed | 30 |
| 15 | ingleby | william | M | 33 | Baptist | English | Ontario | Carpenters | 30 |
| 7 | ingram | charles | M | 11 | Anglican | Blank | Ontario | No Occupation Listed | 402 |
| 5 | ingram | george | M | 16 | Anglican | Irish | Ontario | Clerk, nfs | 402 |
| 8 | ingram | joseph | M | 7 | Anglican | Blank | Ontario | No Occupation Listed | 402 |
| 3 | ingram | mary | F | 55 | Anglican | Irish | Ontario | No Occupation Listed | 402 |
| 4 | ingram | samuel | M | 20 | Anglican | Irish | Ontario | No Occupation Listed | 402 |
| 6 | ingram | sarah | F | 14 | Anglican | Irish | Ontario | No Occupation Listed | 402 |
| 2 | ingram | thomas | M | 59 | Anglican | Irish | Quebec | No Occupation Listed | 402 |
| 9 | ingran | matilda | F | 24 | Anglican | English | Ontario | No Occupation Listed | 220 |
| 8 | ingran | william | M | 30 | Anglican | English | Ontario | Conductors, nfs | 220 |
| 10 | ingran | willie | M | 4 | Anglican | English | Ontario | No Occupation Listed | 220 |
| 8 | ireland | jane | F | 46 | Anglican | English | Ontario | No Occupation Listed | 210 |
| 7 | ireland | william | M | 50 | Anglican | Irish | Ontario | Clerk, nfs | 210 |
| 9 | irons | daniel | M | 23 | Methodist | African Origins | Ontario | Horse workers (include groom, horse castrator) | 132 |
| 11 | irons | george | M | 1 | Methodist | African Origins | Ontario | No Occupation Listed | 132 |
| 4 | irons | nancy | F | 25 | Episcopal | African Origins | Ontario | Servants nfs | 15 |
| 10 | irons | susan | F | 22 | Methodist | African Origins | Ontario | No Occupation Listed | 132 |
| 11 | irving | james | M | 63 | Baptist | Blank | England | Jewellers | 252 |
| 12 | itten | albert | M | 18 | Baptist | German | Ontario | Labourers nfs | 671 |
| 19 | itten | alberta | F | 0 | Baptist | German | Ontario | No Occupation Listed | 671 |
| 10 | itten | ann | F | 42 | Baptist | German | — | No Occupation Listed | 671 |
| 14 | itten | elizabeth | F | 13 | Baptist | German | Ontario | No Occupation Listed | 671 |
| 18 | itten | eva | F | 3 | Baptist | German | Ontario | No Occupation Listed | 671 |
| 16 | itten | herbert | M | 8 | Baptist | German | Ontario | No Occupation Listed | 671 |
| 15 | itten | lilley | F | 11 | Baptist | German | Ontario | No Occupation Listed | 671 |
| 11 | itten | mary | F | 21 | Baptist | German | Ontario | No Occupation Listed | 671 |
| 17 | itten | melche | M | 5 | Baptist | German | Ontario | No Occupation Listed | 671 |
| 9 | itten | melchi | M | 40 | Baptist | German | — | Carpenters | 671 |
| 13 | itten | menno | M | 15 | Baptist | German | Ontario | No Occupation Listed | 671 |
| 5 | ivor | elizabeth | F | | Presbyterian | Scottish | Scotland | No Occupation Listed | 266 |