| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Casa Amigo Mobile Home Park | city | California | United States | 37.40 | -122.00 | 13 | |
| Casa Blanca | city | California | United States | 33.93 | -117.40 | 915 | |
| Casa Conejo | city | California | United States | 34.18 | -118.94 | 830 | |
| Casa Grande Estates Mobile Home Park | city | California | United States | 33.11 | -117.11 | 830 | |
| Casa Grande Mobile Home Park | city | California | United States | 34.98 | -120.44 | 203 | |
| Casa Hermosa Mobile Home Park | city | California | United States | 33.84 | -117.97 | 114 | |
| Casa Loma | city | California | United States | 39.20 | -120.78 | 3690 | |
| Casa Loma | city | California | United States | 33.83 | -117.03 | 1669 | |
| Casa Mia Mobile Home Park | city | California | United States | 39.10 | -121.54 | 65 | |
| Casa Mobile Home Park | city | California | United States | 38.58 | -121.52 | 16 | |
| Casa de Amigos Mobile Home Park | city | California | United States | 33.10 | -117.11 | 830 | |
| Casa de Lago Mobile Home Estates | city | California | United States | 37.40 | -121.91 | 49 | |
| Casa de Oro | city | California | United States | 32.75 | -116.98 | 830 | |
| Casa del Norte Mobile Home Community | city | California | United States | 34.22 | -119.10 | 78 | |
| Cascade | city | California | United States | 39.70 | -121.18 | 4406 | |
| Cascade Shores | city | California | United States | 39.26 | -120.91 | 3398 | |
| Cascade Sun Mobile Home Estates | city | California | United States | 41.73 | -122.53 | 2598 | |
| Cascadel Woods | city | California | United States | 37.23 | -119.46 | 3618 | |
| Casey Corner | city | California | United States | 39.20 | -121.18 | 1669 | |
| Casitas Mobile Home Park | city | California | United States | 34.37 | -119.31 | 396 | |
| Casitas Springs | city | California | United States | 34.37 | -119.31 | 396 | |
| Casitas del Sol Mobile Home Park | city | California | United States | 33.13 | -117.13 | 830 | |
| Casmalia | city | California | United States | 34.84 | -120.53 | 396 | |
| Caspar | city | California | United States | 39.36 | -123.82 | 59 | |
| Cassel | city | California | United States | 40.92 | -121.55 | 3349 | |
| Castaic | city | California | United States | 34.49 | -118.62 | 1236 | |
| Castaic Junction | city | California | United States | 34.44 | -118.61 | 997 | |
| Castella | city | California | United States | 41.14 | -122.32 | 2089 | |
| Castellammare | city | California | United States | 34.04 | -118.56 | 0 | |
| Castle Crag | city | California | United States | 41.16 | -122.29 | 2509 | |
| Castle Gardens | city | California | United States | 37.36 | -120.58 | 170 | |
| Castle Mobile Estates | city | California | United States | 36.97 | -121.97 | 29 | |
| Castle Park | city | California | United States | 32.61 | -117.07 | 121 | |
| Castle Rock Springs | city | California | United States | 38.77 | -122.72 | 2598 | |
| Castlewood Mobile Home Park | city | California | United States | 39.13 | -121.52 | 72 | |
| Castro City | city | California | United States | 37.40 | -122.10 | 127 | |
| Castro Valley | city | California | United States | 37.69 | -122.09 | 196 | |
| Castroville | city | California | United States | 36.77 | -121.76 | 9 | |
| Caswell | city | California | United States | 34.72 | -118.80 | 3349 |