Founded in 1811, Union County is one of 120 counties in the state of Kentucky. Historically, Union County was formed from Henderson County. The city of Morganfield is the county seat. With FIPS code of 225, Union County has a population of 13,544 and area of 345 square miles (894 km2).
List of all cities in Union County, KY alphabetically
| City/Town | Postal Code | Area Code |
| Boxville, KY | 42437 | 270 |
| Grove Center, KY | 42437 | 270 |
| Henshaw, KY | 42437 | 270 |
| Morganfield, KY | 42437 | 270 |
| Pride, KY | 42437 | 270 |
| Spring Grove, KY | 42437 | 270 |
| Sturgis, KY | 42459 | 270 |
| Sullivan, KY | 42460 | 270 |
| Uniontown, KY | 42461 | 270 |
| Waverly, KY | 42462 | 270 |