- Hainesville
- Hamburg
- Hamel
- Hamletsburg
- Hampshire
- Hanna City
- Hanover
- Hanover Park
- Hardin
- Harmon
- Harrison
- Harristown
- Hartsburg
- Harvard
- Harvel
- Harwood Heights
- Havana
- Hawthorn Woods
- Hazel Crest
- Hebron
- Hecker
- Henderson
- Hennepin
- Henning
- Henry
- Heritage Lake
- Herrick
- Herrin
- Herscher
- Hettick
- Heyworth
- Hickory Hills
- Hidalgo
- Highland
- Highwood
- Hillcrest
- Hillsdale
- Hillside
- Hillview
- Hinckley
- Hindsboro
- Hinsdale
- Hodgkins
- Hoffman
- Hoffman Estates
- Holiday Hills
- Holiday Shores
- Hollowayville
- Homer
- Homer Glen
- Hometown
- Homewood
- Hoopeston
- Hooppole
- Hopedale
- Hopkins Park
- Hoyleton
- Huey
- Hull
- Humboldt
- Hume
- Huntley
- Hutsonville
- Hyde Park
