| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Arabian Gardens Mobile Home Park | city | California | United States | 33.73 | -116.24 | 9 | |
| Arastraville | city | California | United States | 38.00 | -120.23 | 3435 | |
| Araz Junction | city | California | United States | 32.75 | -114.71 | 200 | |
| Arbee | city | California | United States | 39.21 | -122.00 | 39 | |
| Arbios | city | California | United States | 36.78 | -120.40 | 167 | |
| Arboga | city | California | United States | 39.05 | -121.56 | 42 | |
| Arbolada | city | California | United States | 34.45 | -119.26 | 830 | |
| Arbor | city | California | United States | 37.96 | -121.72 | 91 | |
| Arbuckle | city | California | United States | 39.02 | -122.06 | 131 | |
| Arcade | city | California | United States | 38.48 | -121.58 | 3 | |
| Arcade | city | California | United States | 38.61 | -121.38 | 59 | |
| Arcadia | city | California | United States | 34.14 | -118.04 | 830 | |
| Arcata | city | California | United States | 40.87 | -124.08 | 124 | |
| Archer | city | California | United States | 34.42 | -115.37 | 830 | |
| Arcilla | city | California | United States | 33.78 | -117.48 | 1000 | |
| Arden Town | city | California | United States | 38.57 | -121.38 | 36 | |
| Arena | city | California | United States | 37.37 | -120.68 | 98 | |
| Argentine (historical) | city | California | United States | 39.92 | -120.77 | 4566 | |
| Argos | city | California | United States | 34.73 | -116.25 | 2063 | |
| Arguello | city | California | United States | 34.58 | -120.64 | 78 | |
| Argus | city | California | United States | 35.75 | -117.40 | 1669 | |
| Arlanza | city | California | United States | 33.94 | -117.47 | 830 | |
| Arlight | city | California | United States | 34.58 | -120.64 | 78 | |
| Arlington | city | California | United States | 33.92 | -117.45 | 830 | |
| Arlington Heights | city | California | United States | 34.04 | -118.32 | 196 | |
| Arlington Station | city | California | United States | 33.91 | -117.44 | 830 | |
| Arlynda Corners | city | California | United States | 40.59 | -124.26 | 134 | |
| Armistead | city | California | United States | 35.55 | -117.93 | 3349 | |
| Armona | city | California | United States | 36.32 | -119.71 | 196 | |
| Armstrong | city | California | United States | 38.09 | -121.27 | 36 | |
| Armstrong | city | California | United States | 39.33 | -120.24 | 5997 | |
| Arno (historical) | city | California | United States | 38.33 | -121.34 | 26 | |
| Arnold | city | California | United States | 38.26 | -120.35 | 4189 | |
| Arnold | city | California | United States | 39.52 | -123.39 | 1669 | |
| Arnold (historical) | city | California | United States | 37.76 | -120.74 | 200 | |
| Arnold Heights | city | California | United States | 33.89 | -117.28 | 1669 | |
| Aromas | city | California | United States | 36.89 | -121.64 | 259 | |
| Arrowbear Lake | city | California | United States | 34.21 | -117.08 | 6187 | |
| Arrowhead | city | California | United States | 34.15 | -117.29 | 1249 | |
| Arrowhead Equestrian Estates | city | California | United States | 34.36 | -117.25 | 3349 | |
| Arrowhead Farms | city | California | United States | 34.17 | -117.30 | 1669 | |
| Arrowhead Highlands | city | California | United States | 34.23 | -117.26 | 5029 | |
| Arrowhead Junction | city | California | United States | 34.94 | -114.82 | 1669 | |
| Arrowhead Springs | city | California | United States | 34.19 | -117.26 | 1978 | |
| Arroyo Fairways Mobile Home Club | city | California | United States | 33.75 | -116.91 | 1768 | |
| Arroyo Grande | city | California | United States | 35.12 | -120.59 | 62 | |
| Arroyo Mobile Home Park | city | California | United States | 34.37 | -119.31 | 396 | |
| Arroyo Vista | city | California | United States | 38.72 | -121.05 | 984 | |
| Arroz | city | California | United States | 38.62 | -121.97 | 157 | |
| Artesia | city | California | United States | 33.87 | -118.08 | 9 | |
| Artois | city | California | United States | 39.62 | -122.19 | 157 | |
| Arts Trailer Court | city | California | United States | 34.22 | -119.14 | 62 | |
| Arundel (historical) | city | California | United States | 37.45 | -120.60 | 180 | |
| Arvin | city | California | United States | 35.21 | -118.83 | 830 | |
| Arvin Mobile Home Estates | city | California | United States | 35.21 | -118.83 | 830 |