Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| California Medical Center | Hospital | 71 | Los Angeles | 34 02 15 N | 118 15 59 W |
| California Medical Facility | Hospital | 43 | Solano | 38 19 44 N | 121 58 41 W |
| California Mens Colony | Locale | 135 | San Luis Obispo | 35 19 34 N | 120 41 59 W |
| California Mid-State Fairground | Park | 212 | San Luis Obispo | 35 38 23 N | 120 41 10 W |
| California Mid-Winter Fairgrounds | Park | -17 | Imperial | 32 50 12 N | 115 34 04 W |
| California Middle School | School | 5 | Sacramento | 38 33 07 N | 121 29 49 W |
| California Military Academy (historical) | School | 88 | Los Angeles | 33 59 39 N | 118 20 37 W |
| California Military Museum | Building | 8 | Sacramento | 38 34 53 N | 121 30 17 W |
| California Mine | Mine | 1072 | Los Angeles | 34 37 25 N | 118 25 32 W |
| California Mine | Mine | 760 | San Bernardino | 34 44 15 N | 115 57 05 W |
| California Mine | Mine | 1076 | San Bernardino | 35 02 42 N | 115 07 47 W |
| California Mine | Mine | 1721 | Sierra | 39 41 50 N | 120 52 33 W |
| California Mobile Home Park (subdivision) | Populated Place | 24 | Orange | 33 44 46 N | 117 54 33 W |
| California Morning Star Mine | Mine | 810 | Placer | 39 06 13 N | 120 51 18 W |
| California Multi-Cultural Park | Park | 35 | Sacramento | 38 29 33 N | 121 16 48 W |
| California Muscovy Church | Church | 399 | San Bernardino | 34 08 46 N | 117 19 53 W |
| California Nutmeg Spring | Spring | 615 | Butte | 39 38 33 N | 121 16 19 W |
| California Oak Shopping Center | Locale | 121 | Kern | 35 22 08 N | 119 02 17 W |
| California Oaks Sports Park | Park | 382 | Riverside | 33 34 15 N | 117 12 13 W |
| California Oil Museum | Building | 86 | Ventura | 34 21 16 N | 119 03 34 W |
| California Ophir Mine | Mine | 420 | Calaveras | 38 01 40 N | 120 30 32 W |
| California Orientation Center for the Blind | School | 7 | Alameda | 37 53 52 N | 122 18 10 W |
| California Pines | Populated Place | 1343 | Modoc | 41 24 36 N | 120 40 45 W |
| California Pines Airport | Airport | 1337 | Modoc | 41 24 44 N | 120 41 07 W |
| California Point | Cape | 23 | Marin | 37 54 46 N | 122 28 46 W |
| California Polytechnic State University | School | 103 | San Luis Obispo | 35 18 03 N | 120 39 39 W |
| California Primate Research Center | Building | 21 | Yolo | 38 32 23 N | 121 48 20 W |
| California Province of the Society of Jesus Jesuit Center Library | Building | 207 | Santa Clara | 37 12 49 N | 121 58 56 W |
| California Recreation Center | Park | 10 | Los Angeles | 33 47 09 N | 118 10 50 W |
| California Rehabilitation Center | Locale | 208 | Riverside | 33 55 47 N | 117 34 10 W |