1840 Brooklyn, New York City Directory - I
| Last Name | First Name | Profession | Residence | Other |
|---|
|
| | Ibbotson | Robert | merchant | Washington av |
| | Ilsey | Rev. Silas | | 37 Tillary |
| | Ingersoll | D.Wesley | merchant | 254 Pearl |
| | Ingle | Fras. | plumber | Division n Myrtle |
| | Ingoldsby | Felix | | Prospect Hill |
| | Ingraham | John | merchant | 66 Orange |
| | Ingram | Sydney | auctioner | 11 Baltic n Clinton |
| | Innes | Mrs. Helen S. | | Washington av n Jamaica Turnpike |
| | Inslee | John | mason | 153 Nassau |
| | Inslee | Samuel | shoe store | 156 Nassau |
| | Inyard | Nicholas | bar room and oyster house | 31 Fulton |
| | Ireland | Hayers | milkman | Wallabout |
| | Irving | Matthew | shoe store | 49 Henry c Cranberry |
| | Isaacs | Catherine | widow / dress maker | 131 Pearl |
| | Isham | Ralph | merchant | 67 Pineapple |
| | Isham | Ralph H. | merchant | ?7 Pineapple |
| | Ives | Geo.R. | merchant | 75 Willow |
| |