Barrios de California I
- Idyllwild Mountain Park (2)
- Imperial Beach (96)
- Indian Canyons (3)
- Industrial Area West (3)
- Ingleside (10)
- Ingleside Heights (5)
- Inglewood (148)
- Inner Parkside (2)
- Inner Sunset (10)
- Interland/Univ Research Park (2)
- Iron Triangle (5)
- Irvine Business Complex (74)
- Irvine Spectrum (38)
- Irvington (8)
- Isla Vista (10)
- Islenair (1)
- Ivey Ranch-Rancho Del Oro (14)
- Iveywood (2)
- Ivy Drive Area (1)
- Ivy Hill (1)