- Green Valley
- Greenfield
- Greenville
- Greenwood
- Gulfport
- Gages Lake
- Galatia
- Gays
- Geff
- German Valley
- Germantown Hills
- Gibson City
- Gilberts
- Gillespie
- Gilman
- Glasford
- Glen Carbon
- Glen Ellyn
- Glendale Heights
- Glenview
- Godfrey
- Golconda
- Goodfield
- Goodings Grove
- Goreville
- Grand Chain
- Grand Tower
- Grandwood Park
- Granite City
- Grant Park