Barrios de California A
- ABC (16)
- Adams (8)
- Adams Hill (10)
- Adams North (9)
- Adams Point (13)
- Adobe Meadows (2)
- Agate Bay Vista (1)
- Alamo Square (4)
- Albertstone-Beck (2)
- Alessandro (1)
- Alessandro Heights (2)
- Alexander (1)
- Alexian (1)
- Alkali Flat (2)
- Allendale (11)
- Allied Arts (2)
- Allied Gardens (13)
- Alma Neighborhood Association (1)
- Alma-Almaden (1)
- Almaden (1)
- Almaden Meadows (2)
- Almaden-Clare Felice (3)
- Almond Grove (1)
- Almonte (3)
- Alta Heights (3)
- Alta Mesa (7)
- Alta Vista (2)
- Alviso (1)
- Amberton (1)
- American Beauty (1)
- American River Canyon (1)
- Anaheim Hills (38)
- Anaheim Resort (15)
- Anatolia Village (1)
- Anderson East (1)
- Anderson West (3)
- Araby Cove (3)
- Arden Park Vista (2)
- Ardenwood (6)
- Arlanza (14)
- Arleta (2)
- Arlington (6)
- Arlington Farms/West Manor (4)
- Arlington Heights (1)
- Arlington Heights (54)
- Arlington South (2)
- Arrowhead (1)
- Arrowhead (13)
- Arrowhead Farms (3)
- Arrowview (2)
- Arroyo Grande/Nipomo (22)
- Artcraft Manor (3)
- Artesia Pilar (3)
- Artisan (1)
- Arts District (16)
- Ascot Drive Area (2)
- Ashbury Heights (2)
- Ashland (8)
- Assumption Parish (3)
- Atascadero/Templeton (14)
- Atwater Village (44)
- Auzerais-Josefa (3)
- Avalon (1)
- Avalon (2)
- Avenida Espana (1)
- Avila Beach/Los Osos (1)
- Avis-Cherry (2)
- Avondale (1)
- Azalea-Hollywood Park (6)