Union County is a county located in the U.S. state of Kentucky. As of the most recent data available, the county has a population of approximately 15,637 people, with a population density of about 45.32 persons per square mile.
The county spans a total land area of 345.00 square miles (894.00 square kilometers). The administrative center and county seat is Morganfield, which often serves as a hub for local governance and services. The largest city within the county by population is Morganfield.
Geographically, Union County experiences varied elevations, with its highest point at Morganfield 437 ft and its lowest point at Breckinridge Center 0 ft. The region operates in the UTC-6.