Barrios de California I
- Idyllwild Mountain Park (3)
- Indian Canyons (5)
- Industrial Area West (3)
- Ingleside (2)
- Ingleside Heights (6)
- Ingleside Terrace (1)
- Inner Parkside (5)
- Inner Sunset (15)
- Interland/Univ Research Park (2)
- Iron Triangle (4)
- Irvine Business Complex (64)
- Irvine Spectrum (38)
- Irvington (8)
- Isla Vista (8)
- Ivey Ranch-Rancho Del Oro (15)
- Iveywood (1)
- Ivy Drive Area (1)
- Ivy Hill (2)