- Angelus Oaks (20 Companies)
- Angwin (143 Companies)
- Annapolis (16 Companies)
- Antelope (618 Companies)
- Antioch (4,928 Companies)
- Anza (110 Companies)
- Apple Valley (3,229 Companies)
- Applegate (66 Companies)
- Aptos (1,955 Companies)
- Arbuckle (133 Companies)
- Arcadia (6,794 Companies)
- Arcata (2,146 Companies)
- Arleta (85 Companies)
- Armona (81 Companies)
- Arnold (393 Companies)
- Aromas (118 Companies)
- Arrowbear Lk (2 Companies)
- Arrowhead Farms (2 Companies)
- Arroyo Grande (3,301 Companies)
- Artesia (2,102 Companies)
- Artois (13 Companies)
- Arvin (606 Companies)
- Atascadero (2,903 Companies)
- Atherton (334 Companies)
- Atwater (1,682 Companies)
- Atwood (8 Companies)
- Auberry (168 Companies)
- Auburn (6,286 Companies)
- Avalon (317 Companies)
- Avenal (255 Companies)
- Avery (44 Companies)
- Avila Beach (88 Companies)
- Azusa (2,498 Companies)
- Badger (10 Companies)
- Baker (50 Companies)
- Bakersfield (31,838 Companies)
- Balboa (1 Company)
- Balboa Island (2 Companies)
- Baldwin Hills (2 Companies)
- Baldwin Park (3,728 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 (1,753 Companies)
- Beckwourth (32 Companies)
- Belden (3 Companies)
- Bell (94 Companies)
- Bell Canyon (3 Companies)
- Bell Gardens (3,681 Companies)
- Bella Vista (50 Companies)
- Bellflower (4,281 Companies)
- Belmont (1,996 Companies)
- Belvedere (30 Companies)
- Belvedere Tiburon (1,034 Companies)
- Ben Lomond (297 Companies)
- Benicia (2,592 Companies)
- Benton (13 Companies)
