- Angelus Oaks (20 Companies)
- Angwin (144 Companies)
- Annapolis (16 Companies)
- Antelope (619 Companies)
- Antioch (4,939 Companies)
- Anza (110 Companies)
- Apple Valley (3,233 Companies)
- Applegate (66 Companies)
- Aptos (1,955 Companies)
- Arbuckle (133 Companies)
- Arcadia (6,799 Companies)
- Arcata (2,147 Companies)
- Arleta (86 Companies)
- Armona (81 Companies)
- Arnold (393 Companies)
- Aromas (118 Companies)
- Arrowbear Lk (2 Companies)
- Arrowhead Farms (2 Companies)
- Arroyo Grande (3,303 Companies)
- Artesia (2,103 Companies)
- Artois (13 Companies)
- Arvin (607 Companies)
- Atascadero (2,908 Companies)
- Atherton (334 Companies)
- Atwater (1,684 Companies)
- Atwood (8 Companies)
- Auberry (168 Companies)
- Auburn (6,294 Companies)
- Avalon (317 Companies)
- Avenal (256 Companies)
- Avery (44 Companies)
- Avila Beach (88 Companies)
- Azusa (2,504 Companies)
- Badger (10 Companies)
- Baker (50 Companies)
- Bakersfield (31,875 Companies)
- Balboa (1 Company)
- Balboa Island (2 Companies)
- Baldwin Hills (2 Companies)
- Baldwin Park (3,736 Companies)
- Ballico (48 Companies)
- Bangor (21 Companies)
- Banning (1,461 Companies)
- Bard (2 Companies)
- Barrington (1 Company)
- Barstow (2,012 Companies)
- Bass Lake (91 Companies)
- Bay Point (61 Companies)
- Bayside (51 Companies)
- Beale Afb (41 Companies)
- Bear Valley (10 Companies)
- Bear Valley Springs (1 Company)
- Beaumont (1,756 Companies)
- Beckwourth (32 Companies)
- Belden (3 Companies)
- Bell (94 Companies)
- Bell Canyon (3 Companies)
- Bell Gardens (3,687 Companies)
- Bella Vista (50 Companies)
- Bellflower (4,285 Companies)
- Belmont (2,000 Companies)
- Belvedere (30 Companies)
- Belvedere Tiburon (1,035 Companies)
- Ben Lomond (297 Companies)
- Benicia (2,595 Companies)
- Benton (13 Companies)
