Barrios de California R
- Racquet Club Estates (12)
- Racquet Club South (2)
- Racquet Club West (15)
- Ramblewood (2)
- Ramona (23)
- Ramona (8)
- Rampart Village (29)
- Rancho Adjacent (27)
- Rancho Bella Vista (7)
- Rancho Bernardo (55)
- Rancho Fontana (1)
- Rancho Niguel (7)
- Rancho Park (13)
- Rancho Penasquitos (37)
- Rancho Ramon (2)
- Rancho Rinconada (3)
- Rancho San Diego (7)
- Rancho San Joaquin (5)
- Rancho Santa Teresa (3)
- Rancho West (1)
- Rancho-Del Rey (6)
- Ray Park (1)
- Raymond Hill (1)
- Raynor Park (1)
- Redhawk (7)
- Redwood Heights (10)
- Redwood Oaks (4)
- Redwood Shores (15)
- Redwood Village-Rolando Park (8)
- Renaissance (3)
- Republic Homes (2)
- Reservoir Hill (3)
- Resthaven Acres (2)
- Rexland Acres (4)
- Richland Farms (1)
- Richmond Annex (6)
- Richmond District (35)
- Richmond Grove (10)
- Ridgeview-Webster (2)
- Rincon (41)
- Rio Bravo (2)
- River District (2)
- River Oaks (2)
- River Oaks (4)
- Riverglen (1)
- Riverlakes (4)
- Riverside (1)
- Riverside Airport (4)
- Riverside Rancho (4)
- Riverside Valley Home Gardens (1)
- Riverview (1)
- Riverview (5)
- Riverview Office Park (1)
- Riverview West (4)
- Riverwalk (8)
- Riviera (15)
- Riviera (4)
- Riviera/Westchester (6)
- Robinhood-Bon Vivant (2)
- Robla (5)
- Rockaway Beach (1)
- Rockridge (4)
- Roeding Park (10)
- Rolando (13)
- Rolling Hills (4)
- Rolling Hills Ranch (3)
- Roosevelt (2)
- Roosevelt (7)
- Roripaugh Ranch (2)
- Rose Garden (1)
- Rose Garden (1)
- Rose Glen (4)
- Rose Park (1)
- Rose-Sartorette (2)
- Rosebank (1)
- Rosemont (18)
- Roseville Heights (2)
- Roseville-Fleet Ridge (16)
- Rosewood Baker (2)
- Rossmoyne (19)
- Royal Oaks (1)
- RP Sports Complex (9)
- Rubidoux (10)
- Rudgear Meadows (1)
- Russian Hill (12)
- Ruth Hardy Park (5)
- Rutherford Park (1)