- Galbraith
- Galesburg
- Galland
- Galt
- Galva
- Gambrill
- Garber
- Garden City
- Garden Grove
- Gardiner
- Gardner
- Garfield
- Garland
- Garnavillo
- Garner
- Garner Island
- Garretville
- Garrison
- Garry Owen
- Garwin
- Gas Light Mobile Home Villa
- Gaslight Square Trailer Park
- Gatesville
- Gaza
- Geneva
- Geneva Island
- Genoa
- Genoa Bluff
- George
- Georgetown