California Neighborhoods R
- Racquet Club Estates (27)
- Racquet Club South (4)
- Racquet Club West (14)
- Ramblewood (1)
- Ramona (20)
- Ramona (5)
- Rampart Village (26)
- Rancho Adjacent (19)
- Rancho Bella Vista (8)
- Rancho Bernardo (61)
- Rancho Cordova (2)
- Rancho Fontana (3)
- Rancho Niguel (11)
- Rancho Palos Verdes (72)
- Rancho Park (10)
- Rancho Penasquitos (50)
- Rancho Ramon (1)
- Rancho Rinconada (3)
- Rancho San Diego (10)
- Rancho San Joaquin (2)
- Rancho Santa Fe (17)
- Rancho Santa Teresa (3)
- Rancho West (2)
- Rancho-Del Rey (9)
- Ray Park (2)
- Raymond Hill (2)
- Raynor Park (3)
- Redhawk (10)
- Redondo Beach (95)
- Redwood (2)
- Redwood Heights (13)
- Redwood Oaks (2)
- Redwood Shores (14)
- Redwood Village-Rolando Park (11)
- Renaissance (3)
- Republic Homes (1)
- Reseda (26)
- Reservoir Hill (3)
- Resthaven Acres (2)
- Rex Manor (1)
- Rexland Acres (4)
- Reyes Adobe (1)
- Rheem Valley Manor (2)
- Rialto (36)
- Richmond Annex (1)
- Richmond District (37)
- Richmond Grove (5)
- Ridgecrest (71)
- Ridgeview-Webster (5)
- Rincon (39)
- Rio Linda (4)
- River District (2)
- River Oaks (3)
- River Oaks (6)
- Riverglen (1)
- Riverlakes (4)
- Riverpoint (2)
- Riverside (1)
- Riverside Airport (4)
- Riverside Rancho (7)
- Riverview (1)
- Riverview (1)
- Riverview Office Park (1)
- Riverview West (6)
- Riverwalk (4)
- Riviera (10)
- Riviera (2)
- Riviera/Westchester (11)
- Robinhood-Bon Vivant (3)
- Robla (3)
- Rockridge (4)
- Roeding Park (12)
- Rohnert Park (35)
- Rolando (13)
- Rolling Hills (3)
- Rolling Hills Ranch (1)
- Roosevelt (1)
- Roosevelt (11)
- Roripaugh Ranch (4)
- Rose Garden (1)
- Rose Garden (2)
- Rose Glen (6)
- Rose-Sartorette (4)
- Rosebank (2)
- Rosemead (10)
- Rosemont (13)
- Rosemont Square (1)
- Roseville Heights (1)
- Roseville-Fleet Ridge (16)
- Rosewood Baker (2)
- Rossmoor (2)
- Rossmoyne (9)
- Royal Oaks (1)
- RP Sports Complex (7)
- Rubidoux (5)
- Rudgear Meadows (1)
- Russian Hill (16)
- Ruth Hardy Park (3)
- Ryan Tract (2)