Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Huntington Harbor Mobile Home Park (subdivision) | Populated Place | 2 | Orange | 33 43 32 N | 118 03 09 W |
| Huntington Shorecliffs Mobile Home Park (subdivision) | Populated Place | 2 | Orange | 33 39 41 N | 117 59 24 W |
| Ibis Cut | Canal | 2 | Solano | 38 10 04 N | 122 06 25 W |
| Immanuel Lutheran Church | Church | 2 | San Joaquin | 37 57 57 N | 121 19 25 W |
| Imola | Populated Place | 2 | Napa | 38 16 43 N | 122 16 50 W |
| Indio Plaza Shopping Center | Locale | 2 | Riverside | 33 42 58 N | 116 14 01 W |
| Irby Park | Park | 2 | Orange | 33 43 11 N | 118 00 42 W |
| Isla Vista County Park | Park | 2 | Santa Barbara | 34 24 32 N | 119 51 37 W |
| Island Beach | Beach | 2 | Monterey | 36 48 17 N | 121 47 17 W |
| Island Land Club | Locale | 2 | Sonoma | 38 07 34 N | 122 26 11 W |
| Island Slough | Gut | 2 | Solano | 38 10 12 N | 121 59 00 W |
| Island United Church | Church | 2 | San Mateo | 37 33 41 N | 122 15 53 W |
| Island Yacht Club | Locale | 2 | Alameda | 37 46 33 N | 122 14 56 W |
| Isleton City Fire Station | Building | 2 | Sacramento | 38 09 41 N | 121 36 46 W |
| Isleton City Hall | Building | 2 | Sacramento | 38 09 43 N | 121 36 46 W |
| Isleton Fire Station | Building | 2 | Sacramento | 38 09 43 N | 121 36 45 W |
| Isleton Police Station | Building | 2 | Sacramento | 38 09 42 N | 121 36 46 W |
| Isleton Post Office | Post Office | 2 | Sacramento | 38 09 43 N | 121 36 32 W |
| Jack London Square | Park | 2 | Alameda | 37 47 39 N | 122 16 33 W |
| Jack Nicklaus Private Golf Course | Locale | 2 | Riverside | 33 37 57 N | 116 16 16 W |
| Jacksnipe | Populated Place | 2 | Solano | 38 11 34 N | 122 04 05 W |
| Jefferson Elementary School | School | 2 | Imperial | 32 40 17 N | 115 28 51 W |
| Jetty Beach | Beach | 2 | Monterey | 36 48 35 N | 121 47 24 W |
| John F Kennedy High School | School | 2 | Sacramento | 38 30 15 N | 121 32 02 W |
| John F Kennedy Memorial Park | Park | 2 | Napa | 38 15 59 N | 122 16 59 W |
| John H Eader Elementary School | School | 2 | Orange | 33 38 40 N | 117 57 54 W |
| John P Williams Elementary School | School | 2 | San Joaquin | 38 01 05 N | 121 20 43 W |
| Johnson Landing | Locale | 2 | Alameda | 37 37 45 N | 122 09 12 W |
| Joice Island | Island | 2 | Solano | 38 08 60 N | 122 03 34 W |
| Joice Island Club | Locale | 2 | Solano | 38 08 26 N | 122 04 02 W |
| Judith Rock | Island | 2 | Santa Barbara | 34 01 32 N | 120 25 20 W |
| Kaiser Permanente Hospital | Hospital | 2 | San Mateo | 37 29 20 N | 122 13 24 W |
| KATA-AM (Arcata) | Tower | 2 | Humboldt | 40 51 11 N | 124 05 04 W |
| KBLX-AM (Berkeley) | Tower | 2 | Alameda | 37 50 58 N | 122 17 48 W |
| KCRA-TV (Sacramento) | Tower | 2 | Sacramento | 38 15 52 N | 121 29 26 W |
| KDON-AM (Salinas) | Tower | 2 | Santa Cruz | 36 52 11 N | 121 49 09 W |
| Kennedy School Park | Park | 2 | Sacramento | 38 30 07 N | 121 32 06 W |
| Kent Island | Island | 2 | Marin | 37 54 44 N | 122 40 43 W |
| Ketch Park | Park | 2 | San Mateo | 37 33 04 N | 122 15 27 W |
| KFRC-AM (San Francisco) | Tower | 2 | Alameda | 37 50 58 N | 122 17 48 W |
| Kibesillah Rock | Island | 2 | Mendocino | 39 34 50 N | 123 46 50 W |
| Kidder Landing | Locale | 2 | Solano | 38 16 35 N | 121 38 14 W |
| Kildeer Park | Park | 2 | San Mateo | 37 34 07 N | 122 15 35 W |
| Kimballville (historical) | Populated Place | 2 | Ventura | 34 16 30 N | 119 18 13 W |
| KKHI | Tower | 2 | San Mateo | 37 31 57 N | 122 16 30 W |
| KNBA-AM (Vallejo) | Tower | 2 | Solano | 38 07 04 N | 122 15 28 W |
| KNBR-AM (San Francisco) | Tower | 2 | San Mateo | 37 32 50 N | 122 14 04 W |
| KNTA-AM (Santa Clara) | Tower | 2 | Santa Clara | 37 26 08 N | 121 56 08 W |
| Kona Kai Club | Building | 2 | San Diego | 32 42 33 N | 117 14 02 W |
| KRBK-TV (Sacramento) | Tower | 2 | Sacramento | 38 15 52 N | 121 29 26 W |
| KVON-AM (Napa) | Tower | 2 | Napa | 38 15 45 N | 122 16 60 W |
| La Piedra State Beach | Park | 2 | Los Angeles | 34 02 19 N | 118 53 13 W |
| Laguna Del Rey | Lake | 2 | Monterey | 36 36 25 N | 121 51 28 W |
| Laguna Grande Regional Park | Park | 2 | Monterey | 36 36 12 N | 121 51 17 W |
| Laguna Point Beach | Beach | 2 | Mendocino | 39 29 26 N | 123 47 49 W |
| Laguna Vista Park | Park | 2 | San Mateo | 37 32 11 N | 122 16 48 W |
| Lake Alhambra | Reservoir | 2 | Contra Costa | 38 00 36 N | 121 47 43 W |
| Lake Earl | Lake | 2 | Del Norte | 41 49 32 N | 124 11 19 W |
| Lake Merritt Channel Park | Park | 2 | Alameda | 37 47 37 N | 122 15 44 W |
| Lake Talawa | Lake | 2 | Del Norte | 41 49 53 N | 124 13 02 W |
| Lake Venezia | Reservoir | 2 | San Joaquin | 37 58 57 N | 121 20 04 W |
| Lakeshore Park | Park | 2 | San Mateo | 37 32 59 N | 122 17 13 W |
| Lakeshore School | School | 2 | San Mateo | 37 32 54 N | 122 17 09 W |
| Lakeview Assembly of God Church | Church | 2 | San Joaquin | 37 59 45 N | 121 20 12 W |
| Landmark Plaza Shopping Center | Locale | 2 | Orange | 33 39 31 N | 117 58 21 W |
| Lark View Park | Park | 2 | Orange | 33 42 47 N | 118 01 10 W |
| Lark View School | School | 2 | Orange | 33 42 45 N | 118 01 16 W |
| Larkspur Ferry Terminal | Building | 2 | Marin | 37 56 40 N | 122 30 32 W |
| Lateral One | Canal | 2 | Imperial | 32 42 45 N | 115 28 27 W |
| Latham Slough | Gut | 2 | San Joaquin | 37 59 13 N | 121 30 52 W |
| Le Mar Mobile Home Park (subdivision) | Populated Place | 2 | San Mateo | 37 29 18 N | 122 12 18 W |
| Lechuza Point | Cape | 2 | Los Angeles | 34 02 04 N | 118 51 42 W |
| Leisure World Amphitheatre | Building | 2 | Orange | 33 45 58 N | 118 05 04 W |
| Leisure World Golf Course | Locale | 2 | Orange | 33 45 59 N | 118 04 54 W |
| Leo J Ryan Memorial Park | Park | 2 | San Mateo | 37 33 24 N | 122 16 24 W |
| Lew Galbraith Golf Course | Locale | 2 | Alameda | 37 43 08 N | 122 11 47 W |
| Leydecker Park | Park | 2 | Alameda | 37 44 13 N | 122 14 33 W |
| Liberty Farms | Locale | 2 | Solano | 38 18 47 N | 121 41 40 W |
| Limatour Estero Reserve | Park | 2 | Marin | 38 01 51 N | 122 54 43 W |
| Lincoln High School | School | 2 | San Joaquin | 38 00 39 N | 121 20 14 W |
| Lindsey Slough Gas Field | Oilfield | 2 | Solano | 38 13 32 N | 121 43 60 W |
| Lisbon Elementary School | School | 2 | Sacramento | 38 29 18 N | 121 30 59 W |
| Little Flock Baptist Church | Church | 2 | San Joaquin | 37 56 46 N | 121 19 02 W |
| Little Hastings Tract | Civil | 2 | Solano | 38 15 02 N | 121 41 32 W |
| Lone Tree Point | Cape | 2 | Contra Costa | 38 02 13 N | 122 16 27 W |
| Long Beach Yacht Club | Locale | 2 | Los Angeles | 33 45 11 N | 118 06 49 W |
| Long Point | Cape | 2 | Los Angeles | 33 24 23 N | 118 21 59 W |
| Long Pond | Lake | 2 | Humboldt | 40 41 08 N | 124 13 04 W |
| Long Rock | Island | 2 | Del Norte | 41 48 04 N | 124 17 59 W |
| Lookout Point | Cape | 2 | Humboldt | 41 16 47 N | 124 05 41 W |
| Los Altos Sewage Disposal Plant | Locale | 2 | Santa Clara | 37 26 02 N | 122 06 06 W |
| Los Patos Gun Club (historical) | Locale | 2 | Orange | 33 43 50 N | 118 03 17 W |
| Los Prados Park | Park | 2 | San Mateo | 37 32 31 N | 122 16 56 W |
| Los Prados Shopping Center | Locale | 2 | San Mateo | 37 32 41 N | 122 17 06 W |
| Lower Newport Bay | Bay | 2 | Orange | 33 36 47 N | 117 54 22 W |
| Luco Slough | Gut | 2 | Solano | 38 12 50 N | 121 55 30 W |
| Lund | Populated Place | 2 | Yolo | 38 19 50 N | 121 38 38 W |
| Lyford Cove | Bay | 2 | Marin | 37 52 28 N | 122 26 55 W |
| M Justin Herman Plaza | Park | 2 | San Francisco | 37 47 41 N | 122 23 44 W |
| Madison Elementary School | School | 2 | San Joaquin | 37 58 16 N | 121 19 29 W |
| Madison Park | Park | 2 | San Joaquin | 37 58 14 N | 121 19 41 W |
| Main Beach Park | Park | 2 | Orange | 33 32 32 N | 117 47 06 W |
| Main Canal | Canal | 2 | Yolo | 38 24 28 N | 121 33 49 W |
| Maine Prairie | Populated Place | 2 | Solano | 38 18 29 N | 121 45 32 W |
| Malibu Beach | Beach | 2 | Los Angeles | 34 01 55 N | 118 41 18 W |
| Malibu Lagoon | Lake | 2 | Los Angeles | 34 01 58 N | 118 40 51 W |
| Malibu Pier | Locale | 2 | Los Angeles | 34 02 10 N | 118 40 33 W |
| Malibu Point | Cape | 2 | Los Angeles | 34 01 52 N | 118 40 56 W |
| Mallagh Landing | Locale | 2 | San Luis Obispo | 35 10 27 N | 120 43 00 W |
| Mallard (historical) | Locale | 2 | Alameda | 37 28 50 N | 121 58 26 W |