Barrios de California S
- Sabre Springs
- Sagepointe
- Saint Francis
- Salt Creek Ranch
- Samarkand
- Samlarc
- San Andreas
- San Antonio
- San Bernardino Intl Airport
- San Carlos
- San Fernando Valley
- San Gorgonio
- San Luis Rey
- San Miguel
- San Rafael Hills
- San Roque Parks
- San Tomas
- Santa Ana Triangle
- Santa Anita Park
- Santa Clara
- Santa Fe
- Santa Fe-Richmond
- Santa Teresa
- Santa Venetia
- Santana Row
- Saranap Area
- Saratoga Creek
- Saugus
- School
- Scripps Ranch
- Seabright
- Seafood District
- Seaport
- Senda Nueva
- Serra Mesa
- Serramonte
- Seven Oaks
- Seven Trees
- Shafter
- Shandin Hills
- Sharon Height
- Sharp Park
- Sheffield Village
- Shelltown
- Sherman Heights
- Sherman Oaks
- Sherman Oaks
- Sherwoods Manor
- Shields-Reid
- Shoreline West
- Shoreview
- Sierra Gardens
- Sierra Linda
- Sierra Sky Park
- Sierra Vista
- Silver Creek
- Silver Lake
- Silver Strand
- Silverado
- Sky Ranch
- Skyline
- Skyline Forest
- Smith Ranch
- Snail
- Sobrante Park
- SoMa
- Somerset
- SOS
- Soscol
- South Anaheim
- South Bakersfield
- South Bank
- South Beach
- South Berkeley
- South Central LA
- South Cirby
- South City Farms
- South Coast Metro
- South Concord
- South End
- South Hagginwood
- South Lake
- South Land Park Terrace
- South Los Altos
- South Manteca
- South Market
- South Natomas
- South Oceanside
- South Park
- South Park
- South Pointe
- South Redlands
- South Riverbank
- South San Lauren
- South Shore
- South Vallejo
- South Whittier
- South Winds
- Southcrest
- Southeast Modesto
- Southeast Oakland Hills
- Southeast Torrance
- Southeastern Sacramento
- Southern Pacific/Richards
- Southgate
- Southgate
- Southport
- Southridge Village
- Southside
- Southside Park
- Southwest Berkeley
- Southwest Modesto
- Southwest Santa Rosa
- Southwood
- Southwood Riviera
- Spanos Park East
- Spartan-Keyes
- Spice Tract
- St Claire Gardens
- St Francis
- St Leo's
- St Rose
- St Vincent's Hill Historic District
- Starbird
- Staumbaugh Heller
- Stevens Creek Park
- Stockdale Greens
- Stockton
- Stonegate
- Stonestown
- Stratford Gardens
- Strawberry
- Studio City
- Sugarloaf
- Summerside
- Sun
- Sun City
- Sun Garden Acres
- Sun Valley
- Sunbow
- Sundale
- Sundance Lake
- Sunnyarts
- Sunnyside
- Sunnyside
- Sunnyvale West
- Sunol-Midtown
- Sunrise
- Sunrise Park
- Sunset Cliffs
- Sunset Creekside
- Sunset Park
- Sunset West
- Swan Canyon
- Sycamore Canyon Canyon Springs