Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Fortuna Junior Academy | School | 24 | Humboldt | 40 34 38 N | 124 08 29 W |
| Fortuna Missionary Baptist Church | Church | 20 | Humboldt | 40 35 49 N | 124 09 13 W |
| Fortuna Mountain | Summit | 360 | San Diego | 32 50 49 N | 117 03 37 W |
| Fortuna Nursery School | School | 25 | Humboldt | 40 31 11 N | 124 08 57 W |
| Fortuna Seventh Day Adventist Church | Church | 24 | Humboldt | 40 34 42 N | 124 08 34 W |
| Fortuna Union High School | School | 17 | Humboldt | 40 35 43 N | 124 09 12 W |
| Fortuna United Methodist Church | Church | 21 | Humboldt | 40 35 56 N | 124 09 24 W |
| Forty Springs Valley | Stream | | Lake | 39 07 57 N | 122 49 13 W |
| Forty-Acre Opening | Flat | 957 | Mendocino | 39 11 12 N | 123 05 08 W |
| Forty-Five Canal | Canal | 14 | Contra Costa | 37 51 14 N | 121 37 42 W |
| Forty-Ninth Street Elementary School | School | 55 | Los Angeles | 33 59 52 N | 118 15 40 W |
| Fortyeighth Street Park | Park | 49 | Los Angeles | 33 59 57 N | 118 17 11 W |
| Fortyfive Mile Campground | Locale | 1988 | El Dorado | 38 48 13 N | 120 06 37 W |
| Fortyfour Creek | Stream | | Humboldt | 41 13 15 N | 124 00 44 W |
| Fortynine Creek | Stream | | Modoc | 41 29 47 N | 120 05 04 W |
| Fortynine Gap | Gap | 396 | Mariposa | 37 37 36 N | 120 18 29 W |
| Fortynine Mine (historical) | Mine | 245 | Tuolumne | 37 44 07 N | 120 24 29 W |
| Fortynine Palms Canyon | Valley | | San Bernardino | 34 07 23 N | 116 05 42 W |
| Fortynine Palms Oasis | Spring | 873 | San Bernardino | 34 06 20 N | 116 06 17 W |
| Fortyniner Gulch | Valley | | Butte | 39 47 35 N | 121 33 39 W |
| Fortytwo Mile Campground | Locale | 1730 | El Dorado | 38 47 29 N | 120 09 03 W |
| Forward Mill | Locale | 1096 | Tehama | 40 26 07 N | 121 43 56 W |
| Forward Park | Park | 85 | Tehama | 40 11 07 N | 122 14 38 W |
| Forward School | School | 200 | San Diego | 32 47 56 N | 117 01 06 W |
| Foshay Middle School | School | 46 | Los Angeles | 34 01 08 N | 118 18 25 W |
| Foshay Pass | Gap | 1339 | San Bernardino | 34 54 56 N | 115 32 55 W |
| Foshay Spring | Spring | 1284 | San Bernardino | 34 55 01 N | 115 32 07 W |
| Foss Camp | Locale | 1381 | Trinity | 40 18 05 N | 123 08 27 W |
| Foss Creek | Stream | | Sonoma | 38 36 12 N | 122 52 08 W |
| Foss Creek Elementary School | School | 46 | Sonoma | 38 37 43 N | 122 52 20 W |
| Foss Lake (historical) | Lake | 17 | San Diego | 33 15 27 N | 117 19 03 W |
| Foss Ranch | Locale | 535 | Tehama | 40 16 52 N | 122 48 31 W |
| Foss Valley | Valley | | Napa | 38 24 28 N | 122 14 17 W |
| Fossett Spring | Spring | 1695 | Modoc | 41 47 34 N | 120 13 09 W |
| Fossil Campground | Locale | 2211 | Inyo | 37 16 45 N | 118 08 42 W |
| Fossil Canyon | Valley | | Imperial | 32 47 01 N | 116 01 12 W |
| Fossil Canyon | Valley | | Los Angeles | 34 15 22 N | 117 42 43 W |
| Fossil Canyon | Valley | | San Bernardino | 35 02 31 N | 117 06 51 W |
| Fossil Creek | Stream | | Mendocino | 39 57 11 N | 123 01 49 W |
| Fossil Falls | Falls | 994 | Inyo | 35 58 12 N | 117 54 32 W |
| Fossil Hill | Summit | 1322 | Inyo | 36 43 45 N | 118 02 51 W |
| Fossil Point | Cape | 32 | San Luis Obispo | 35 10 30 N | 120 43 31 W |
| Fossil Ridge | Ridge | 525 | Contra Costa | 37 50 48 N | 121 55 47 W |
| Foster | Populated Place | 145 | San Diego | 32 54 30 N | 116 55 34 W |
| Foster | Populated Place | 2063 | Siskiyou | 41 15 14 N | 122 57 32 W |
| Foster 827 Dam | Dam | 1770 | Riverside | 33 45 24 N | 116 43 33 W |
| Foster Bar (historical) | Populated Place | 582 | Yuba | 39 26 10 N | 121 07 48 W |
| Foster Canyon | Valley | | San Diego | 32 55 55 N | 116 56 14 W |
| Foster City | Populated Place | 2 | San Mateo | 37 33 31 N | 122 16 16 W |
| Foster City Branch San Mateo County Library | Building | 2 | San Mateo | 37 33 37 N | 122 16 11 W |
| Foster City City Hall | Building | 2 | San Mateo | 37 33 36 N | 122 16 10 W |
| Foster City Elementary School | School | 2 | San Mateo | 37 32 45 N | 122 16 24 W |
| Foster City Post Office | Post Office | 2 | San Mateo | 37 33 06 N | 122 15 51 W |
| Foster City Recreation Center | Park | 2 | San Mateo | 37 33 26 N | 122 16 13 W |
| Foster Creek | Stream | | Mendocino | 39 55 21 N | 123 37 37 W |
| Foster Creek | Stream | | Mendocino | 39 49 52 N | 123 36 51 W |
| Foster Creek | Stream | | Trinity | 40 58 55 N | 122 43 11 W |
| Foster Draw | Valley | | Lassen | 41 04 59 N | 120 51 30 W |
| Foster Elementary School | School | 23 | Los Angeles | 33 54 23 N | 118 12 08 W |
| Foster Elementary School | School | 104 | Los Angeles | 34 04 17 N | 117 58 22 W |
| Foster Elementary School | School | 95 | San Diego | 32 47 31 N | 117 05 01 W |
| Foster Glades | Flat | 1108 | Trinity | 39 59 26 N | 123 05 09 W |
| Foster Hall | Building | 27 | Marin | 37 58 35 N | 122 32 07 W |
| Foster Island | Island | 51 | Tehama | 39 51 05 N | 122 03 46 W |
| Foster Lake | Lake | 2218 | Trinity | 41 02 50 N | 122 51 27 W |
| Foster Lake | Reservoir | 1770 | Riverside | 33 45 24 N | 116 43 33 W |
| Foster Meadow | Flat | 2059 | El Dorado | 38 35 30 N | 120 14 46 W |
| Foster Meadow | Swamp | 2053 | El Dorado | 38 35 25 N | 120 15 06 W |
| Foster Memorial Hospital | Hospital | 41 | Ventura | 34 16 30 N | 119 15 29 W |
| Foster Middle School | School | 11 | Alameda | 37 49 09 N | 122 16 23 W |
| Foster Mine | Mine | 459 | Calaveras | 38 04 31 N | 120 32 41 W |
| Foster Mine | Mine | 2086 | Siskiyou | 41 15 16 N | 122 57 58 W |
| Foster Mountain | Summit | 693 | El Dorado | 38 49 42 N | 120 49 41 W |
| Foster Mountain | Summit | 906 | Mendocino | 39 26 26 N | 123 10 34 W |
| Foster Park | Park | 100 | Ventura | 34 21 10 N | 119 18 42 W |
| Foster Park | Populated Place | 73 | Ventura | 34 21 10 N | 119 18 18 W |
| Foster Ranch | Locale | 910 | Mendocino | 39 56 55 N | 123 00 46 W |
| Foster Ridge | Ridge | 2586 | Fresno | 37 09 18 N | 119 08 36 W |
| Foster Road Elementary School | School | 32 | Los Angeles | 33 54 33 N | 118 02 02 W |
| Foster Spring | Spring | 1675 | Lassen | 41 03 45 N | 120 49 58 W |
| Foster Truck Trail | Trail | 422 | San Diego | 32 57 13 N | 116 56 05 W |
| Foster Well | Well | 1028 | San Bernardino | 34 42 51 N | 116 56 59 W |
| Fosters Cabin | Building | 1643 | Trinity | 41 00 44 N | 122 51 30 W |
| Fosters Cabin | Locale | 852 | Trinity | 41 06 14 N | 123 10 16 W |
| Fosters Cabin | Locale | 1652 | Trinity | 41 00 43 N | 122 51 42 W |
| Foty-Second Street Elementary School | School | 39 | Los Angeles | 34 00 22 N | 118 19 19 W |
| Foulke Cemetery | Cemetery | 851 | Siskiyou | 41 30 52 N | 122 31 08 W |
| Foulks Park | Park | 10 | Sacramento | 38 25 22 N | 121 24 34 W |
| Foulks Ranch Elementary School | School | 8 | Sacramento | 38 25 08 N | 121 26 01 W |
| Found Lake | Lake | 2094 | Trinity | 41 02 31 N | 122 49 10 W |
| Founders Church of Religious Science | Church | 68 | Los Angeles | 34 03 50 N | 118 17 38 W |
| Founders Grove | Woods | 50 | Humboldt | 40 21 05 N | 123 55 38 W |
| Founders Grove Nature Trail | Trail | 55 | Humboldt | 40 21 01 N | 123 55 31 W |
| Founders Hall | Building | 58 | Humboldt | 40 52 37 N | 124 04 38 W |
| Founders Hall | Building | 113 | Los Angeles | 33 58 37 N | 118 01 52 W |
| Founders Hall | Building | 439 | San Bernardino | 34 04 47 N | 117 09 51 W |
| Founders Hall (historical) | Building | 90 | Los Angeles | 34 05 05 N | 118 17 22 W |
| Founders Memorial Park | Park | 95 | Los Angeles | 33 59 12 N | 118 02 45 W |
| Founders Park | Park | 56 | Los Angeles | 34 01 17 N | 118 17 07 W |
| Founders Tree | Locale | 49 | Humboldt | 40 21 08 N | 123 55 28 W |
| Foundry Wharf Business Park | Locale | 11 | Sonoma | 38 13 52 N | 122 37 49 W |
| Fountain and Tallman Soda Factory Museum | Building | 569 | El Dorado | 38 43 47 N | 120 47 56 W |
| Fountain Avenue Baptist Church | Church | 112 | Los Angeles | 34 05 44 N | 118 17 47 W |
| Fountain Court Shopping Center | Locale | 336 | San Bernardino | 34 03 57 N | 117 26 13 W |
| Fountain Garden Convalescent Hospital | Hospital | 29 | Los Angeles | 33 56 05 N | 118 14 00 W |
| Fountain Grove Community Park | Park | 147 | Sonoma | 38 28 60 N | 122 43 08 W |
| Fountain Grove Convalescent Hospital | Hospital | 10 | Los Angeles | 33 47 02 N | 118 08 36 W |
| Fountain Grove Golf and Country Club | Locale | 156 | Sonoma | 38 29 15 N | 122 42 44 W |
| Fountain Head Mine | Mine | 1025 | Nevada | 39 17 15 N | 120 57 55 W |
| Fountain House Hill | Summit | 982 | Yuba | 39 24 38 N | 121 11 53 W |