Places beginning with HA in Illinois, United States
- Hadley
- Hadley
- Hadley
- Hadley, Township of
- Haegers Bend
- Hagaman
- Hagarstown
- Hagener
- Hagener, Township of
- Hahnaman
- Hahnaman, Township of
- Haines, Township of
- Hainesville
- Haldane
- Hale Ridge (historical)
- Hale, Township of
- Half Day
- Hallidayboro
- Hallock
- Hallock, Township of
- Hallsville
- Halltown (historical)
- Hall, Township of
- Halsey
- Hamburg
- Hamburg
- Hamburg Election Precinct
- Hamburg Landing
- Hamel
- Hamel, Township of
- Hamilton
- Hamilton Corners
- Hamilton County
- Hamilton Estates (subdivision)
- Hamilton, Township of
- Hamlet
- Hamletsburg
- Hamlin Park (subdivision)
- Hammond
- Hampshire
- Hampshire, Township of
- Hampton
- Hampton, Township of
- Hanaford
- Hancock County
- Hancock, Township of
- Hanks Station
- Hanna City
- Hanna, Township of
- Hanover
- Hanover Park
- Hanover, Township of
- Hanover, Township of
- Hanson
- Hanson Park (subdivision)
- Happy Hills
- Harbor Light Bay
- Harbor Square (subdivision)
- Harco
- Hardin
- Hardin County
- Hardin Election Precinct
- Harding
- Hardin, Township of
- Hardinville
- Harlem
- Harlem, Township of
- Harlem, Township of
- Harmon
- Harmon, Township of
- Harmony
- Harmony
- Harmony, Township of
- Harness
- Harper
- Harper (historical)
- Harpster
- Harp, Township of
- Harris
- Harris
- Harrisburg
- Harrisburg, Township of
- Harris Corners
- Harris Grove (historical)
- Harrison
- Harrison
- Harrison Avenue Gardens (subdivision)
- Harrison, Township of
- Harrisonville
- Harrisonville
- Harristown
- Harris, Township of
- Harristown, Township of
- Harrisville
- Harter, Township of
- Hartford
- Hartford
- Hartland
- Hartland, Township of
- Hartsburg
- Hartshorn
- Hartsville
- Harvard
- Harvard Hills
- Harvel
- Harvel, Township of
- Harvey
- Harwood Heights
- Harwood, Township of
- Hastings
- Hastings
- Hastings
- Havana
- Havana, Township of
- Haw Creek, Township of
- Hawkins Glen
- Hawley (historical)
- Hawthorne Hills (subdivision)
- Hawthorne Place
- Hawthorne, Township of
- Hawthorn Knolls (subdivision)
- Hawthorn Woods
- Hayes
- Haynes
- Haypress
- Hazel Crest
- Hazel Dell
- Hazel Green
- Hazelhurst