California Neighborhoods R
- Racquet Club Estates (13)
- Racquet Club South (3)
- Racquet Club West (11)
- Rafael Meadows-Los Ranchitos (1)
- Ramona (19)
- Ramona (5)
- Rampart Village (35)
- Rancho Adjacent (29)
- Rancho Bella Vista (4)
- Rancho Bernardo (45)
- Rancho Fontana (3)
- Rancho Niguel (8)
- Rancho Park (15)
- Rancho Penasquitos (25)
- Rancho Ramon (7)
- Rancho Rinconada (3)
- Rancho San Joaquin (2)
- Rancho San Rafael (1)
- Rancho Santa Teresa (3)
- Rancho West (2)
- Rancho-Del Rey (7)
- Ray Park (2)
- Raymond Hill (3)
- Raynor Park (4)
- Redhawk (3)
- Redwood Estates (1)
- Redwood Heights (12)
- Redwood Oaks (2)
- Redwood Shores (11)
- Redwood Village (3)
- Redwood Village-Rolando Park (12)
- Renaissance (2)
- Republic Homes (1)
- Reservoir Hill (2)
- Rexland Acres (4)
- Rialto Airport (2)
- Richland Farms (1)
- Richmond American Homes (1)
- Richmond Annex (1)
- Richmond District (18)
- Richmond Grove (12)
- Ridgeview-Webster (4)
- Rincon (30)
- Rio Bravo (3)
- River District (2)
- River Oaks (2)
- River Oaks (2)
- River View (1)
- Riverglen (1)
- Riverlakes (9)
- Riverpoint (1)
- Riverside (1)
- Riverside Airport (7)
- Riverside Rancho (3)
- Riverview (1)
- Riverview (5)
- Riverview Office Park (1)
- Riverview West (3)
- Riverwalk (5)
- Riviera (11)
- Riviera/Westchester (10)
- Robinhood-Bon Vivant (1)
- Robinson Ranch (1)
- Robla (4)
- Rockridge (2)
- Rodgers (1)
- Roeding Park (18)
- Rolando (18)
- Rolling Hills (2)
- Rolling Hills Ranch (1)
- Roosevelt (1)
- Roosevelt (4)
- Roosevelt (6)
- Roripaugh Ranch (4)
- Rose Garden (4)
- Rose Glen (2)
- Rose-Sartorette (2)
- Rosebank (1)
- Rosemont (22)
- Rosemont Square (1)
- Roseville Heights (6)
- Roseville-Fleet Ridge (10)
- Rosewood Baker (2)
- Rossmoyne (8)
- Royal Oaks (1)
- RP Sports Complex (10)
- Rubidoux (3)
- Russian Hill (4)
- Ruth Hardy Park (4)
- Rutherford Park (2)