| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Caravan Mobile Home Park | city | California | United States | 39.13 | -123.16 | 830 | |
| Caravana Trailer Lodge | city | California | United States | 33.74 | -117.95 | 6 | |
| Carbona | city | California | United States | 37.70 | -121.41 | 114 | |
| Carbondale | city | California | United States | 38.41 | -121.01 | 242 | |
| Carbondale (historical) | city | California | United States | 33.75 | -117.68 | 997 | |
| Card Place | city | California | United States | 39.81 | -123.40 | 830 | |
| Cardiff-by-the-Sea | city | California | United States | 33.02 | -117.28 | 134 | |
| Carefree Mobile Village | city | California | United States | 33.92 | -116.56 | 872 | |
| Carefree Ranch Mobile Home Park | city | California | United States | 33.14 | -117.04 | 830 | |
| Caribou | city | California | United States | 40.08 | -121.16 | 3349 | |
| Carlotta | city | California | United States | 40.54 | -124.06 | 196 | |
| Carlsbad | city | California | United States | 33.16 | -117.35 | 22 | |
| Carlsbad Trailer Park | city | California | United States | 33.15 | -117.34 | 45 | |
| Carlton | city | California | United States | 33.90 | -117.84 | 354 | |
| Carlton Hills | city | California | United States | 32.85 | -116.99 | 324 | |
| Carmel Highlands | city | California | United States | 36.50 | -121.93 | 295 | |
| Carmel Valley | city | California | United States | 36.48 | -121.73 | 830 | |
| Carmel Valley Manor | city | California | United States | 36.53 | -121.83 | 239 | |
| Carmel Valley Village | city | California | United States | 36.49 | -121.72 | 830 | |
| Carmel by the Sea | city | California | United States | 36.56 | -121.92 | 150 | |
| Carmel-by-the-Sea | city | California | United States | 36.56 | -121.92 | 150 | |
| Carmen City | city | California | United States | 38.05 | -120.69 | 1669 | |
| Carmenita | city | California | United States | 33.89 | -118.05 | 49 | |
| Carmet | city | California | United States | 38.37 | -123.08 | 39 | |
| Carmichael | city | California | United States | 38.62 | -121.33 | 118 | |
| Carnadero | city | California | United States | 36.98 | -121.54 | 167 | |
| Carnelian Bay | city | California | United States | 39.23 | -120.08 | 6227 | |
| Carnelian Heights | city | California | United States | 39.21 | -120.10 | 6709 | |
| Carneros (historical) | city | California | United States | 38.23 | -122.31 | 3 | |
| Carpenter | city | California | United States | 37.61 | -122.04 | 177 | |
| Carpenter Place | city | California | United States | 39.73 | -122.93 | 3349 | |
| Carpinteria | city | California | United States | 34.40 | -119.52 | 78 | |
| Carquinez Heights | city | California | United States | 38.08 | -122.24 | 3 | |
| Carr | city | California | United States | 34.93 | -120.51 | 104 | |
| Carriage Mobile Home Estates | city | California | United States | 33.80 | -117.85 | 180 | |
| Carrick | city | California | United States | 41.45 | -122.36 | 3566 | |
| Carrolton | city | California | United States | 37.80 | -121.07 | 85 | |
| Carrville | city | California | United States | 41.06 | -122.70 | 2509 | |
| Carson | city | California | United States | 33.83 | -118.28 | 42 | |
| Carson Hill | city | California | United States | 38.03 | -120.51 | 1738 | |
| Carson's Creek | city | California | United States | 38.07 | -120.54 | 1669 | |
| Cartago | city | California | United States | 36.32 | -118.03 | 3602 | |
| Carthay Circle | city | California | United States | 34.06 | -118.37 | 114 | |
| Carthay Square | city | California | United States | 34.06 | -118.37 | 114 | |
| Caruthers | city | California | United States | 36.54 | -119.83 | 196 | |
| Carvin Creek Homesites | city | California | United States | 39.63 | -120.58 | 6240 |