Barrios de California A
- ABC (24)
- Adams (5)
- Adams Hill (8)
- Adams North (19)
- Adams Point (10)
- Adams Terrace (1)
- Adobe Meadows (4)
- Agate Bay Vista (3)
- Alamo Square (2)
- Albertstone-Beck (2)
- Alessandro (3)
- Alessandro Heights (2)
- Alexian (1)
- Alkali Flat (7)
- Allendale (12)
- Allied Arts (1)
- Allied Gardens (14)
- Alma-Almaden (3)
- Almaden (4)
- Almaden Meadows (1)
- Almaden Springs (1)
- Almaden-Clare Felice (3)
- Almond Grove (1)
- Almonte (7)
- Alta Heights (3)
- Alta Mesa (10)
- Alta Vista (4)
- Alum Rock (1)
- Alviso (1)
- Amberton (1)
- American Beauty (1)
- American River Canyon (2)
- Anaheim Hills (54)
- Anaheim Resort (15)
- Anatolia Village (2)
- Anderson East (1)
- Anderson West (3)
- Anza Vista (3)
- Applewood (1)
- Arden Park Vista (1)
- Ardenwood (5)
- Arlanza (13)
- Arleta (2)
- Arlington (12)
- Arlington Farms/West Manor (4)
- Arlington Heights (2)
- Arlington Heights (50)
- Arlington South (4)
- Arrowhead (9)
- Arrowhead Farms (1)
- Arrowview (1)
- Arroyo Grande/Nipomo (17)
- Artcraft Manor (1)
- Artic Sue (1)
- Artisan (1)
- Arts District (24)
- Ascot Drive Area (3)
- Ashbury Heights (1)
- Ashland (10)
- Aspen (1)
- Assumption Parish (6)
- Atascadero/Templeton (27)
- Atwater Village (53)
- Auzerais-Josefa (3)
- Avalon (1)
- Avalon (1)
- Avila Beach/Los Osos (2)
- Avis-Cherry (3)
- Azalea-Hollywood Park (6)