| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Hyampom | city | California | United States | 40.62 | -123.45 | 1669 | |
| Hyde Park | city | California | United States | 33.98 | -118.33 | 177 | |
| Hyde Park Mobile Home Estates | city | California | United States | 33.74 | -117.91 | 42 | |
| Hydesville | city | California | United States | 40.55 | -124.10 | 314 | |
| Hydril | city | California | United States | 36.01 | -120.10 | 1000 | |
| Hyperion (historical) | city | California | United States | 33.93 | -118.43 | 19 |