| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| オックスナード | city | California | United States | 34.20 | -119.18 | 3 | |
| オンタリオ | city | California | United States | 34.06 | -117.65 | 990 | |
| オークランド | city | California | United States | 37.80 | -122.27 | 3 | |
| オークレー | city | California | United States | 38.00 | -121.71 | 13 | |
| オーシャンサイド | city | California | United States | 33.20 | -117.38 | 32 | |
| オーロビル | city | California | United States | 39.51 | -121.56 | 190 |