Founded in 1911, Lewis County is one of 44 counties in the state of Idaho. Historically, Lewis County was formed from Nez Perce County. The city of Nezperce is the county seat. With FIPS code of 61, Lewis County has a population of 3,715 and area of 479 square miles (1,241 km2).
List of all cities in Lewis County, ID alphabetically
| City/Town | Postal Code | Area Code |
| Craigmont, ID | 83523 | 208 |
| Culdesac, ID | 83548 | 208 |
| Kamiah, ID | 83536 | 208 |
| Nezperce, ID | 83543 | 208 |
| Reubens, ID | 83548 | 208 |
| Winchester, ID | 83555 | 208 |