Henderson County Assessor's Office
17 Monroe Street
Lexington, TN 38351
Phone: (731) 968-2856
- Henderson County is a county located in the U.S. state of Tennessee. As of the 2010 census, the population was 27,769. Its county seat is Lexington. The county was founded in 1821 and named for James Henderson, a soldier in the War of 1812.