- Galt
- Garberville
- Garden Acres
- Garden Farms
- Garden Grove
- Gardena
- Garey
- Garnet
- Gasquet
- Gazelle
- Georgetown
- Gerber
- Geyserville
- Gilroy
- Glen Avon
- Glen Ellen
- Glendale
- Glendora
- Gold Mountain
- Gold River
- Golden Hills
- Goleta
- Gonzales
- Good Hope
- Goodyears Bar
- Goshen
- Graeagle
- Grand Terrace
- Grangeville
- Granite Bay
- Granite Hills
- Graniteville
- Grass Valley
- Graton
- Grayson
- Greeley Hill
- Green Acres
- Green Valley
- Green Valley
- Greenacres
- Greenfield
- Greenfield
- Greenhorn
- Greenview
- Greenville
- Grenada
- Gridley
- Grimes
- Groveland
- Grover Beach
- Guadalupe
- Guerneville
- Guinda
- Gustine
