Founded in 1869, Lemhi County is one of 44 counties in the state of Idaho. Historically, Lemhi County was formed from Idaho County. The city of Salmon is the county seat. With FIPS code of 59, Lemhi County has a population of 8,162 and area of 4,564 square miles (11,821 km2).
List of all cities in Lemhi County, ID alphabetically
| City/Town | Postal Code | Area Code |
| Baker, ID | 83467 | 208 |
| Blue Dome, ID | 83464 | 208 |
| Carmen, ID | 83462 | 208 |
| Challis, ID | 83229 | 208 |
| Cobalt, ID | 83229 | 208 |
| Elk Bend, ID | 83467 | 208 |
| Gibbonsville, ID | 83463 | 208 |
| Leadore, ID | 83464 | 208 |
| Lemhi, ID | 83465 | 208 |
| Lone Pine, ID | 83464 | 208 |
| May, ID | 83253 | 208 |
| North Fork, ID | 83466 | 208 |
| 83469 | 208 | |
| Patterson, ID | 83253 | 208 |
| Salmon, ID | 83467 | 208 |
| Shoup, ID | 83469 | 208 |
| Tendoy, ID | 83468 | 208 |