| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Hodges Park | city | Illinois | United States | 37.16 | -89.27 | 337 | |
| Hodgeville | city | Illinois | United States | 37.35 | -88.56 | 830 | |
| Hodgkins | city | Illinois | United States | 41.77 | -87.86 | 830 | |
| Hoffman | city | Illinois | United States | 38.54 | -89.26 | 830 | |
| Hoffman Estates | city | Illinois | United States | 42.04 | -88.08 | 830 | |
| Hogue Town | city | Illinois | United States | 39.19 | -87.93 | 830 | |
| Holbrook | city | Illinois | United States | 41.54 | -87.64 | 830 | |
| Holcomb | city | Illinois | United States | 42.06 | -89.10 | 830 | |
| Holcombville Corners | city | Illinois | United States | 42.29 | -88.32 | 830 | |
| Holden | city | Illinois | United States | 38.05 | -89.24 | 830 | |
| Holder | city | Illinois | United States | 40.45 | -88.80 | 830 | |
| Holiday Acres Mobile Home Park | city | Illinois | United States | 42.26 | -88.77 | 830 | |
| Holiday Hills | city | Illinois | United States | 42.29 | -88.22 | 830 | |
| Holiday Hills | city | Illinois | United States | 39.93 | -91.35 | 830 | |
| Holiday Shores | city | Illinois | United States | 38.92 | -89.94 | 830 | |
| Holland | city | Illinois | United States | 39.22 | -88.75 | 830 | |
| Holliday | city | Illinois | United States | 39.22 | -88.82 | 830 | |
| Hollis | city | Illinois | United States | 40.60 | -89.67 | 830 | |
| Hollowayville | city | Illinois | United States | 41.37 | -89.30 | 830 | |
| Hollywood Heights | city | Illinois | United States | 38.63 | -90.00 | 830 | |
| Holmes | city | Illinois | United States | 40.38 | -89.59 | 830 | |
| Holmes Corner | city | Illinois | United States | 37.33 | -88.63 | 400 | |
| Homberg | city | Illinois | United States | 37.33 | -88.55 | 370 | |
| Home Run | city | Illinois | United States | 41.71 | -88.08 | 830 | |
| Homefinders | city | Illinois | United States | 42.12 | -87.79 | 830 | |
| Homer | city | Illinois | United States | 40.03 | -87.96 | 830 | |
| Homer Glen | city | Illinois | United States | 41.60 | -87.94 | 830 | |
| Hometown | city | Illinois | United States | 41.73 | -87.73 | 830 | |
| Homeward Hill | city | Illinois | United States | 41.97 | -88.39 | 830 | |
| Homewood | city | Illinois | United States | 41.56 | -87.67 | 830 | |
| Honey Bend | city | Illinois | United States | 39.26 | -89.62 | 830 | |
| Honey Creek | city | Illinois | United States | 41.99 | -89.28 | 830 | |
| Honeymoon Row | city | Illinois | United States | 41.69 | -87.61 | 830 | |
| Honeytree | city | Illinois | United States | 41.66 | -88.08 | 830 | |
| Hoodville | city | Illinois | United States | 38.05 | -88.53 | 400 | |
| Hookdale | city | Illinois | United States | 38.83 | -89.31 | 830 | |
| Hooper | city | Illinois | United States | 40.94 | -87.61 | 830 | |
| Hoopeston | city | Illinois | United States | 40.47 | -87.67 | 830 | |
| Hooppole | city | Illinois | United States | 41.52 | -89.91 | 830 | |
| Hoosier | city | Illinois | United States | 38.80 | -88.46 | 830 | |
| Hope | city | Illinois | United States | 40.21 | -87.90 | 830 | |
| Hopedale | city | Illinois | United States | 40.42 | -89.41 | 830 | |
| Hopewell | city | Illinois | United States | 40.98 | -89.46 | 830 | |
| Hopkins Park | city | Illinois | United States | 41.06 | -87.63 | 830 | |
| Hopper | city | Illinois | United States | 40.79 | -90.99 | 830 | |
| Horace | city | Illinois | United States | 39.72 | -87.71 | 830 | |
| Horatio Gardens | city | Illinois | United States | 42.16 | -87.94 | 830 | |
| Hord | city | Illinois | United States | 38.88 | -88.52 | 830 | |
| Hornsby | city | Illinois | United States | 39.17 | -89.75 | 830 | |
| Horseshoe | city | Illinois | United States | 37.70 | -88.38 | 396 | |
| Horton | city | Illinois | United States | 39.57 | -91.04 | 830 | |
| Houston | city | Illinois | United States | 38.16 | -89.78 | 830 | |
| Howard | city | Illinois | United States | 40.33 | -90.27 | 830 | |
| Howard District | city | Illinois | United States | 42.02 | -87.67 | 830 | |
| Howards Point (historical) | city | Illinois | United States | 39.02 | -88.86 | 830 | |
| Howardton | city | Illinois | United States | 37.63 | -89.46 | 351 | |
| Howe Terrace | city | Illinois | United States | 42.15 | -88.11 | 879 | |
| Hoyleton | city | Illinois | United States | 38.44 | -89.27 | 830 |