- Georgetown
- Gepford
- Gerber
- Geyserville
- Gibbs Ranch
- Gibson
- Gibsonville
- Giffen Cantua Ranch
- Gilberts
- Gilberts
- Gillete
- Gilliam Place
- Gillis
- Gillis
- Gilman Hot Springs
- Gilroy
- Glamis
- Glen Arbor
- Glen Avon
- Glen Ellen
- Glen Frazer
- Glen Martin
- Glen Oaks
- Glen Valley
- Glenblair
- Glenborough
- Glenbrook
- Glenburn
- Glenburn
- Glencoe