Towns
| State | City/Town | Town Title |
|---|---|---|
| Illinois | Henry | Henry, IL |
| Illinois | Herod | Herod, IL |
| Illinois | Herrick | Herrick, IL |
| Illinois | Herrin | Herrin, IL |
| Illinois | Herscher | Herscher, IL |
| Illinois | Hettick | Hettick, IL |
| Illinois | Heyworth | Heyworth, IL |
| Illinois | Hickory Hills | Hickory Hills, IL |
| Illinois | Hidalgo | Hidalgo, IL |
| Illinois | Highland | Highland, IL |
| Illinois | Highland Park | Highland Park, IL |
| Illinois | Highwood | Highwood, IL |
| Illinois | Hillsboro | Hillsboro, IL |
| Illinois | Hillsdale | Hillsdale, IL |
| Illinois | Hillside | Hillside, IL |
| Illinois | Hillview | Hillview, IL |
| Illinois | Hinckley | Hinckley, IL |
| Illinois | Hindsboro | Hindsboro, IL |
| Illinois | Hines | Hines, IL |
| Illinois | Hinsdale | Hinsdale, IL |
| Illinois | Hoffman | Hoffman, IL |
| Illinois | Hoffman Estates | Hoffman Estates, IL |
| Illinois | Holcomb | Holcomb, IL |
| Illinois | Homer | Homer, IL |
| Illinois | Homer Glen | Homer Glen, IL |