| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Mugginsville | city | California | United States | 41.57 | -122.95 | 3349 | |
| Muir | city | California | United States | 37.99 | -122.13 | 209 | |
| Muir | city | California | United States | 39.40 | -123.35 | 1669 | |
| Muir Beach | city | California | United States | 37.86 | -122.58 | 0 | |
| Mulford | city | California | United States | 37.71 | -122.18 | 39 | |
| Mulford Gardens | city | California | United States | 37.70 | -122.18 | 39 | |
| Mulkey Place | city | California | United States | 41.86 | -120.64 | 5095 | |
| Mullen (historical) | city | California | United States | 38.65 | -121.77 | 59 | |
| Mumbert Acres | city | California | United States | 38.27 | -120.32 | 4599 | |
| Mundo | city | California | United States | 33.27 | -115.57 | -1689 | |
| Munyon | city | California | United States | 33.04 | -115.41 | -1689 | |
| Muroc (historical) | city | California | United States | 34.92 | -117.87 | 2509 | |
| Murphy Place | city | California | United States | 40.29 | -123.22 | 2798 | |
| Murphys | city | California | United States | 38.14 | -120.46 | 2509 | |
| Murray | city | California | United States | 36.09 | -120.00 | 203 | |
| Murray Park | city | California | United States | 37.94 | -122.55 | 830 | |
| Murrieta | city | California | United States | 33.55 | -117.21 | 1197 | |
| Murrieta Hot Springs | city | California | United States | 33.56 | -117.16 | 1177 | |
| Muscatel | city | California | United States | 36.79 | -119.86 | 285 | |
| Muscoy | city | California | United States | 34.15 | -117.34 | 1669 | |
| Musick (historical) | city | California | United States | 35.21 | -120.40 | 925 | |
| Musk (historical) | city | California | United States | 36.33 | -119.15 | 367 | |
| Mussel Shoals | city | California | United States | 34.36 | -119.44 | 0 | |
| Mussey Grove (historical) | city | California | United States | 32.93 | -116.91 | 1046 |