- Lakeshore
- Lakeview
- Lamoine
- Landers
- Larkfield-Wikiup
- Las Cruces
- Laws
- Leggett
- Lemon Heights
- Lemoncove
- Leucadia
- Likely
- Lincoln Acres
- Lindcove
- Litchfield
- Little Lake
- Little River
- Live Oak Springs
- Llano
- Lockford
- Lockwood
- Lodoga
- Loleta
- Loma Mar
- Long Barn
- Lookout
- Los Medanos
- Los Nietos
- Los Olivos
- Los Trancos Woods