- 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
- Grantfork
- Grayslake
- Grayville
- Green Oaks
- Green Rock
- Gaslight Village
- Goode Subdivision
- Gorman
- Grist Island
- Griggsville
- Gurnee
- Garrison
- Gilligans Island
- Glendale