Cities
United States
- Humboldt County
- Huntington Beach
- Huntington Lake
- Huntington Park
- Hyampom
- Idlewild
- Idyllwild-Pine Cove
- Igo
- Imperial Beach
- Incline
- Independence
- Indian Wells
- Indio
- Inglewood
- Interlaken
- Inverness
- Inyo County
- Ione
- Irvine
- Irwin
- Irwindale
- Isla Vista
- Isleton
- Jackson
- Jacumba Hot Springs
- Jamestown
- Jamul
- Jenner
- Johnson Valley
- Joshua Tree
- Julian
- June Lake
- Jurupa Valley
- Kelseyville
- Kensington
- Kentfield
- Kenwood
- Kern County
- Kern River
- Kernville
- King City
- Kings Beach
- Kings County
- Kirkwood
- Klamath
- Kneeland
- Knights Ferry
- Kyburz
- La Cañada Flintridge
- La Conchita
- La Crescenta-Montrose
- La Grange
- La Habra Heights
- La Habra
- La Honda
- La Jolla Cove
- La Jolla
- La Mesa
- La Mirada
- La Palma