Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Saint Albans Episcopal Church | Church | 23 | Humboldt | 40 51 28 N | 124 03 44 W |
| Saint Basils Roman Catholic Church | Church | 23 | Solano | 38 06 52 N | 122 14 16 W |
| Saint Johns Regional Medical Center | Hospital | 23 | Ventura | 34 13 06 N | 119 09 27 W |
| Saint Johns Regional Medical Center Health Sciences Library | Building | 23 | Ventura | 34 13 06 N | 119 09 27 W |
| Saint Johns Regional Medical Center Heliport | Airport | 23 | Ventura | 34 13 00 N | 119 09 31 W |
| Saint Marys by the Sea Episcopal Church | Church | 23 | Monterey | 36 37 16 N | 121 54 52 W |
| Saint Philip Neri Church | Church | 23 | Los Angeles | 33 54 31 N | 118 11 41 W |
| Saint Stephens Lutheran Church | Church | 23 | Santa Cruz | 36 59 03 N | 121 59 31 W |
| Salinas Air Base (historical) | Airport | 23 | Monterey | 36 40 11 N | 121 37 05 W |
| Salinas Fairways Golf Course | Locale | 23 | Monterey | 36 40 09 N | 121 37 10 W |
| San Anselmo Memorial Park | Park | 23 | Marin | 37 58 60 N | 122 34 01 W |
| San Clemente Post Office | Post Office | 23 | Orange | 33 26 15 N | 117 37 22 W |
| San Geronimo | Civil | 23 | San Luis Obispo | 35 29 02 N | 120 58 11 W |
| San Jose Friends Church | Church | 23 | Santa Clara | 37 20 30 N | 121 55 44 W |
| San Juan Mobile Home Estates (subdivision) | Populated Place | 23 | Orange | 33 29 35 N | 117 40 04 W |
| San Marcos Building | Building | 23 | Santa Barbara | 34 25 21 N | 119 42 17 W |
| San Ysidro Spanish Seventh Day Adventist Church | Church | 23 | San Diego | 32 33 33 N | 117 03 21 W |
| Sandpiper Plaza Shopping Center | Locale | 23 | San Diego | 32 48 43 N | 117 16 06 W |
| Santa Barbara County Courthouse | Building | 23 | Santa Barbara | 34 25 27 N | 119 42 07 W |
| Santa Barbara County Law Library | Building | 23 | Santa Barbara | 34 25 27 N | 119 42 07 W |
| Santa Clara | Populated Place | 23 | Santa Clara | 37 21 15 N | 121 57 19 W |
| Santa Clara City Hall | Building | 23 | Santa Clara | 37 21 14 N | 121 57 15 W |
| Santa Fe Canal | Canal | 23 | Merced | 37 13 46 N | 120 54 17 W |
| Santa Fe Elementary School | School | 23 | Alameda | 37 50 18 N | 122 16 24 W |
| Santa Rosa Flood Control Channel | Canal | 23 | Sonoma | 38 26 45 N | 122 47 25 W |
| Sassarini Elementary School | School | 23 | Sonoma | 38 17 25 N | 122 28 06 W |
| Sausal | Civil | 23 | Monterey | 36 42 16 N | 121 37 03 W |
| Scandia Elementary School | School | 23 | Solano | 38 16 33 N | 121 56 43 W |
| Scripps Ranch High School | School | 23 | San Diego | 32 50 58 N | 117 15 13 W |
| Sea Aire Mobile Home Park | Populated Place | 23 | San Diego | 33 03 35 N | 117 17 56 W |