- Dieterich
- Divernon
- Dix
- Dixon
- Dolton
- Dongola
- Donnellson
- Donovan
- Dorsey
- Dover
- Dow
- Dowell
- Downers Grove
- Downs
- Du Bois
- Du Quoin
- Dundas
- Dundee
- Dunfermline
- Dunlap
- Dupo
- Durand
- Dwight
- Eagarville
- Earlville
- East Alton
- East Carondelet
- East Dubuque
- East Galesburg
- East Lynn
- East Moline
- East Peoria
- East Saint Louis
- Easton
- Eddyville
- Edelstein
- Edgewood
- Edinburg
- Edwards
- Edwardsville
- Effingham
- El Paso
- Elburn
- Eldena
- Eldorado
- Eldred
- Eleroy
- Elgin
- Elizabeth
- Elizabethtown
- Elk Grove Village
- Elkhart
- Elkville
- Ellery
- Elliott
- Ellis Grove
- Ellisville
- Ellsworth
- Elmhurst
- Elmwood
- Elmwood Park
- Elsah
- Elvaston
- Elwin
- Elwood
- Emden
- Emington
- Emma
- Energy
- Enfield
- Eola
- Equality
- Erie
- Esmond
- Essex
- Eureka
- Evanston
- Evansville
- Evergreen Park
- Ewing
- Fairbury
- Fairfield
- Fairmount
- Fairview
- Fairview Heights
- Farina
- Farmer City
- Farmersville
- Farmington
- Fenton
- Ferris
- Fiatt
- Fidelity
- Fieldon
- Fillmore
- Findlay
- Fisher
- Fithian
- Flanagan
- Flat Rock
- Flora
- Flossmoor
- Foosland
- Forest City
- Forest Park
- Forrest
- Forreston
- Forsyth
- Fort Sheridan
- Fowler
- Fox Lake
- Fox River Grove
- Fox Valley
- Frankfort
- Frankfort Heights
- Franklin
- Franklin Grove
- Franklin Park
- Frederick
- Freeburg
- Freeport
- Fulton
- Fults
- Galatia
- Galena
- Galesburg
- Galt
- Galva
- Garden Prairie
- Gardner
- Gays
- Geff
- Geneseo
- Geneva
- Genoa
- Georgetown
- Gerlaw
- German Valley
- Germantown
- Gibson City
- Gifford
- Gilberts
- Gillespie
- Gilman
- Gilson
- Girard
- Gladstone
- Glasford
- Glen Carbon
- Glen Ellyn