Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Monroe Canyon | Valley | | Monterey | 36 16 11 N | 121 10 53 W |
| Monroe Canyon | Valley | | San Bernardino | 34 09 05 N | 117 03 28 W |
| Monroe Corrals | Locale | 1612 | Lassen | 40 53 19 N | 120 32 19 W |
| Monroe Creek | Stream | | Monterey | 36 16 11 N | 121 10 53 W |
| Monroe Creek | Stream | | Trinity | 40 40 26 N | 123 30 11 W |
| Monroe Elementary School | School | 10 | Alameda | 37 41 57 N | 122 08 47 W |
| Monroe Elementary School | School | 85 | Fresno | 36 33 50 N | 119 44 12 W |
| Monroe Elementary School | School | 12 | Los Angeles | 33 50 16 N | 118 06 11 W |
| Monroe Elementary School | School | 155 | Los Angeles | 34 08 44 N | 118 00 29 W |
| Monroe Elementary School | School | 235 | Riverside | 33 56 03 N | 117 25 53 W |
| Monroe Elementary School | School | 67 | San Francisco | 37 43 33 N | 122 25 54 W |
| Monroe Elementary School | School | 7 | San Joaquin | 37 55 51 N | 121 14 59 W |
| Monroe Elementary School | School | 4 | San Mateo | 37 29 25 N | 122 14 02 W |
| Monroe Elementary School | School | 51 | Santa Barbara | 34 24 14 N | 119 43 46 W |
| Monroe Flat | Flat | 523 | Humboldt | 41 04 17 N | 123 51 32 W |
| Monroe High School | School | 1227 | Kern | 35 07 36 N | 118 26 13 W |
| Monroe High School | School | 1211 | Kern | 35 07 02 N | 118 22 41 W |
| Monroe Lake | Lake | 781 | Monterey | 36 08 47 N | 120 43 14 W |
| Monroe Meadows | Flat | 2206 | Mariposa | 37 39 40 N | 119 39 53 W |
| Monroe Middle School | School | 49 | Santa Clara | 37 18 30 N | 121 56 39 W |
| Monroe Mini Park | Park | 18 | Santa Clara | 37 24 20 N | 122 07 02 W |
| Monroe Park | Park | 16 | Orange | 33 43 39 N | 117 55 51 W |
| Monroe Park | Park | 256 | Riverside | 33 55 10 N | 117 25 18 W |
| Monroe Ridge Trail | Trail | 318 | El Dorado | 38 48 00 N | 120 53 51 W |
| Monroe School | School | 77 | Kings | 36 21 01 N | 119 38 59 W |
| Monroe School | School | 17 | Orange | 33 42 57 N | 117 51 46 W |
| Monroe School | School | 38 | Sonoma | 38 27 07 N | 122 45 06 W |
| Monroe School (historical) | School | 32 | Merced | 37 06 01 N | 120 52 50 W |
| Monroe School (historical) | School | 239 | Monterey | 35 49 23 N | 120 42 18 W |
| Monroe Senior High School | School | 259 | Los Angeles | 34 14 18 N | 118 28 39 W |
| Monroe Street Christian Church | Church | 92 | Los Angeles | 34 05 07 N | 118 17 20 W |
| Monroe Valley | Basin | 773 | Monterey | 36 09 07 N | 120 43 09 W |
| Monroeville (historical) | Populated Place | | Glenn | 39 40 40 N | 121 58 39 W |
| Monrovia | Populated Place | 174 | Los Angeles | 34 08 53 N | 117 59 56 W |
| Monrovia Canyon | Valley | | Los Angeles | 34 10 28 N | 117 59 23 W |
| Monrovia City Hall | Building | 173 | Los Angeles | 34 08 52 N | 117 59 56 W |
| Monrovia Community Hospital | Hospital | 186 | Los Angeles | 34 08 55 N | 117 59 33 W |
| Monrovia High School | School | 151 | Los Angeles | 34 08 47 N | 118 01 03 W |
| Monrovia Mountain Park | Park | 419 | Los Angeles | 34 10 35 N | 117 59 18 W |
| Monrovia Peak | Summit | 1597 | Los Angeles | 34 12 47 N | 117 58 08 W |
| Monrovia Post Office | Post Office | | Los Angeles | 34 08 59 N | 117 59 57 W |
| Monrovia Public Library | Building | 170 | Los Angeles | 34 08 55 N | 118 00 06 W |
| Monrovia Shopping Center | Locale | 144 | Los Angeles | 34 08 22 N | 118 00 23 W |
| Mons | Populated Place | 489 | Riverside | 33 55 14 N | 116 44 50 W |
| Monsanto | Populated Place | 3 | Contra Costa | 38 01 34 N | 122 03 20 W |
| Monserate | Civil | 91 | San Diego | 33 19 53 N | 117 11 28 W |
| Monserate Mountain | Summit | 470 | San Diego | 33 22 20 N | 117 08 55 W |
| Monson | Populated Place | 99 | Tulare | 36 29 32 N | 119 20 11 W |
| Monson Ditch | Canal | 115 | Tulare | 36 33 26 N | 119 19 24 W |
| Monson Ditch | Canal | 104 | Tulare | 36 30 58 N | 119 20 05 W |
| Monson-Sultana Elementary School | School | 110 | Tulare | 36 32 39 N | 119 20 06 W |
| Monstad Pier | Locale | 2 | Los Angeles | 33 50 20 N | 118 23 30 W |
| Monster Park | Park | 47 | San Francisco | 37 42 48 N | 122 23 11 W |
| Mont La Salle School | School | 217 | Napa | 38 20 10 N | 122 23 18 W |
| Mont Marin Park | Park | 75 | Marin | 38 01 13 N | 122 32 52 W |
| Mont Saint John Cellars | Locale | 35 | Napa | 38 15 12 N | 122 19 48 W |
| Mont View Park | Park | 46 | Sacramento | 38 38 45 N | 121 17 01 W |
| Monta Loma Elementary School | School | 9 | Santa Clara | 37 24 33 N | 122 05 55 W |
| Monta Loma School Park | Park | 10 | Santa Clara | 37 24 32 N | 122 05 58 W |
| Monta Vista | Populated Place | 102 | Santa Clara | 37 19 22 N | 122 03 29 W |
| Monta Vista High School | School | 112 | Santa Clara | 37 18 52 N | 122 03 24 W |
| Monta Vista Park | Park | 125 | Santa Clara | 37 19 07 N | 122 04 11 W |
| Monta Vista Resort (historical) | Locale | 603 | San Bernardino | 34 09 15 N | 117 38 48 W |
| Monta Vista School | School | 125 | Santa Clara | 37 19 07 N | 122 04 11 W |
| Montague | Populated Place | 774 | Siskiyou | 41 43 42 N | 122 31 40 W |
| Montague Branch Siskiyou County Public Library | Building | 776 | Siskiyou | 41 43 36 N | 122 31 35 W |
| Montague Cemetery | Cemetery | 770 | Siskiyou | 41 43 39 N | 122 32 33 W |
| Montague City Hall | Building | 776 | Siskiyou | 41 43 36 N | 122 31 35 W |
| Montague Ditch | Canal | 113 | Tulare | 36 33 05 N | 119 19 08 W |
| Montague Elementary School | School | 278 | Los Angeles | 34 14 40 N | 118 24 56 W |
| Montague Elementary School | School | 8 | Santa Clara | 37 23 20 N | 121 56 48 W |
| Montague Elementary School | School | 781 | Siskiyou | 41 43 41 N | 122 31 18 W |
| Montague Mine | Mine | 3350 | Mono | 38 26 14 N | 119 18 59 W |
| Montague Number 2 2012 Dam | Dam | 775 | Siskiyou | 41 44 24 N | 122 31 34 W |
| Montague Park | Park | 6 | Santa Clara | 37 23 18 N | 121 56 22 W |
| Montague Post Office | Post Office | 774 | Siskiyou | 41 43 40 N | 122 31 42 W |
| Montague Ranger Station (historical) | Locale | 795 | Mendocino | 39 51 13 N | 123 02 50 W |
| Montague-Yreka Rohrer Field | Airport | 767 | Siskiyou | 41 43 49 N | 122 32 48 W |
| Montair School | School | 121 | Contra Costa | 37 49 08 N | 122 00 18 W |
| Montalvin Manor | Populated Place | 21 | Contra Costa | 37 59 44 N | 122 19 58 W |
| Montalvin Manor Elementary School | School | 26 | Contra Costa | 37 59 42 N | 122 20 09 W |
| Montalvin Park | Park | 24 | Contra Costa | 37 57 57 N | 122 19 45 W |
| Montalvo | Populated Place | 34 | Ventura | 34 15 14 N | 119 12 13 W |
| Montalvo Elementary School | School | 40 | Ventura | 34 15 20 N | 119 12 26 W |
| Montana Branch Santa Monica Public Library | Building | 73 | Los Angeles | 34 02 04 N | 118 29 31 W |
| Montana de Oro State Park | Park | 285 | San Luis Obispo | 35 15 50 N | 120 51 48 W |
| Montana de Oro State Park Headquarters | Locale | 13 | San Luis Obispo | 35 16 28 N | 120 53 12 W |
| Montana Mine | Mine | 1302 | San Bernardino | 35 14 17 N | 116 51 12 W |
| Montana Peak | Summit | 1744 | Siskiyou | 41 44 33 N | 122 44 02 W |
| Montana Ranch (historical) | Locale | 15 | Los Angeles | 33 50 35 N | 118 07 10 W |
| Montara | Populated Place | 30 | San Mateo | 37 32 32 N | 122 30 58 W |
| Montara Ave Elementary School | School | 32 | Los Angeles | 33 56 41 N | 118 13 11 W |
| Montara Bay Park | Park | 6 | Contra Costa | 38 00 07 N | 122 19 39 W |
| Montara Beach | Beach | 8 | San Mateo | 37 32 49 N | 122 30 54 W |
| Montara Elementary School | School | 657 | San Bernardino | 34 52 48 N | 116 59 40 W |
| Montara Knob | Summit | 483 | San Mateo | 37 33 25 N | 122 29 06 W |
| Montara Mountain | Ridge | 582 | San Mateo | 37 31 43 N | 122 25 37 W |
| Montara Post Office | Post Office | 38 | San Mateo | 37 32 29 N | 122 30 56 W |
| Montara State Beach | Park | 6 | San Mateo | 37 32 56 N | 122 30 52 W |
| Montclair | Populated Place | 325 | San Bernardino | 34 04 39 N | 117 41 23 W |
| Montclair Branch Oakland Public Library | Building | 193 | Alameda | 37 49 51 N | 122 12 43 W |
| Montclair Branch San Bernardino County Library | Building | 313 | San Bernardino | 34 04 21 N | 117 41 34 W |
| Montclair Center Shopping Center | Locale | 327 | San Bernardino | 34 04 42 N | 117 41 24 W |
| Montclair Central Shopping Center | Locale | 355 | San Bernardino | 34 05 22 N | 117 41 16 W |
| Montclair Christian Church | Church | 317 | San Bernardino | 34 04 42 N | 117 42 22 W |
| Montclair City Hall | Building | 315 | San Bernardino | 34 04 25 N | 117 41 32 W |
| Montclair College Prep School | School | 242 | Los Angeles | 34 13 03 N | 118 28 03 W |
| Montclair East Shopping Center | Locale | 349 | San Bernardino | 34 05 15 N | 117 41 18 W |
| Montclair Elementary School | School | 189 | Alameda | 37 49 52 N | 122 12 45 W |
| Montclair Entertainment Plaza Shopping Center | Locale | 354 | San Bernardino | 34 05 24 N | 117 41 31 W |