- Fairbury
- Fairfield
- Fairmont
- Fairmont City
- Fairmount
- Fairview
- Fairview Heights
- Farina
- Farmer City
- Farmersville
- Farmington
- Fayetteville
- Ferris
- Fidelity
- Fieldon
- Fillmore
- Fisher
- Fithian
- Flanagan
- Flat Rock
- Floraville
- Florence
- Flossmoor
- Foosland
- Ford Heights
- Forest City
- Forest Lake
- Forest View
- Forrest
- Forreston
- Forsyth
- Four Lakes
- Fox Lake
- Fox Lake Hills
- Fox River Grove
- Frankfort Square
- Franklin Grove
- Franklin Park
- Freeburg
- Freeman Spur
- Fulton
- Fults
