Founded in 1854, McLean County is one of 120 counties in the state of Kentucky. Historically, McLean County was formed from Daviess County, Muhlenberg County and Ohio County. The city of Calhoun is the county seat. With FIPS code of 149, McLean County has a population of 9,100 and area of 254 square miles (658 km2).
List of all cities in McLean County, KY alphabetically
| City/Town | Postal Code | Area Code |
| Beech Grove, KY | 42322 | 270 |
| Calhoun, KY | 42327 | 270 |
| Island, KY | 42350 | 270 |
| Livermore, KY | 42352 | 270 |
| Nuckols, KY | 42352 | 270 |
| Rumsey, KY | 42371 | 270 |
| Sacramento, KY | 42372 | 270 |