- Pacheco (70 Companies)
- Pacific Grove (1,481 Companies)
- Pacific Palisades (1,616 Companies)
- Pacific Plsds (64 Companies)
- Pacifica (1,587 Companies)
- Pacoima (3,559 Companies)
- Paicines (31 Companies)
- Pala (44 Companies)
- Palermo (61 Companies)
- Palm Desert (7,815 Companies)
- Palm Springs (5,582 Companies)
- Palmdale (7,584 Companies)
- Palo Alto (7,646 Companies)
- Palo Cedro (364 Companies)
- Palo Verde (10 Companies)
- Palomar Mountain (13 Companies)
- Palomar Park (48 Companies)
- Palos Verdes Estates (41 Companies)
- Palos Verdes Peninsula (1,688 Companies)
- Panorama City (2,768 Companies)
- Paradise (2,199 Companies)
- Paramount (3,820 Companies)
- Parker Dam (5 Companies)
- Parlier (372 Companies)
- Pasadena (20,177 Companies)
- Paskenta (13 Companies)
- Paso Robles (4,471 Companies)
- Patterson (960 Companies)
- Patton (8 Companies)
- Pauma Valley (65 Companies)
- Paynes Creek (11 Companies)
- Pearblossom (70 Companies)
- Pearsonville (3 Companies)
- Pebble Beach (132 Companies)
