- Indian Wells
- Indio
- Industry
- Inglewood
- Interlaken
- Inyokern
- Ione
- Iron Horse
- Irvine
- Irwindale
- Isla Vista
- Isleton
- Ivanhoe
- Ibis
- Irwin Estates
- Indian Springs
- Irvings Crest
- Ivy del Mobile Home Park
- Island of Saint James
- Iremel
- Irma
- Iron Mountain
- Igerna
- Indian Creek Trailer Park
- Island Freeman
- Island Number One
- Island Number Two
- Island Number One (historical)
- Irish Isles
- Idlewild