Barrios de California A
- ABC (22)
- Adams (5)
- Adams Hill (5)
- Adams North (11)
- Adams Point (12)
- Adobe Meadows (2)
- Agate Bay Vista (2)
- Alamo Square (2)
- Albertstone-Beck (1)
- Alessandro Heights (1)
- Alexander (1)
- Alkali Flat (3)
- Allendale (12)
- Allied Arts (2)
- Allied Gardens (15)
- Alma-Almaden (4)
- Almaden (1)
- Almaden-Clare Felice (3)
- Almond Grove (1)
- Almonte (3)
- Alta Heights (1)
- Alta Mesa (9)
- Alta Vista (3)
- Alto Sutton Manor (1)
- Alviso (1)
- Amber Park (1)
- American River Canyon (1)
- Anaheim Hills (34)
- Anaheim Resort (16)
- Anatolia Village (2)
- Anderson East (1)
- Anderson West (5)
- Araby Cove (1)
- Arden Park Vista (2)
- Ardenwood (7)
- Arlanza (16)
- Arlington (6)
- Arlington Farms/West Manor (5)
- Arlington Heights (42)
- Arlington South (2)
- Arrowhead (5)
- Arrowhead Farms (2)
- Arrowview (2)
- Arroyo Grande/Nipomo (9)
- Artcraft Manor (7)
- Artesia Pilar (1)
- Arts District (13)
- Ashbury Heights (1)
- Ashland (11)
- Aspen (1)
- Assumption Parish (4)
- Atascadero/Templeton (17)
- Atwater Village (33)
- Auzerais-Josefa (2)
- Avalon (2)
- Avalon (2)
- Avila Beach/Los Osos (3)
- Avis-Cherry (2)
- Azalea-Hollywood Park (3)