Founded in 1861, Lyon County is one of 16 counties in the state of Nevada. Historically, Lyon County was one of the 7 original counties. The city of Yerington is the county seat. With FIPS code of 19, Lyon County has a population of 60,903 and area of 1,994 square miles (5,164 km2).
List of all cities in Lyon County, NV alphabetically
| City/Town | Postal Code | Area Code |
| Aurora, NV | 89444 | 775 |
| Central Valley, NV | 89430 | 775 |
| Dayton, NV | 89403 | 775 |
| Fernley, NV | 89408 | 775 |
| Hazen, NV | 89408 | 775 |
| Mason, NV | 89447 | 775 |
| Pizen Switch, NV | 89447 | 775 |
| Silver City, NV | 89428 | 775 |
| Silver Springs, NV | 89429 | 775 |
| Simpson, NV | 89444 | 775 |
| Smith, NV | 89430 | 775 |
| Stagecoach, NV | 89429 | 775 |
| Sweetwater, NV | 89444 | 775 |
| Topaz Ranch Estates, NV | 89444 | 775 |
| Wabuska, NV | 89447 | 775 |
| Weed Heights, NV | 89447 | 775 |
| Wellington, NV | 89444 | 775 |
| Yerington, NV | 89447 | 775 |