There was a combined nearly $253 million of land and rural real estate for sale in Hardin County recently on Land.com. The total of all Hardin County land and rural real estate for sale was approximately 3,000 acres. Hardin County ranks third in Kentucky for the combined amount of land currently advertised for sale. Elizabethtown had the most land for sale. Government and state-level services are the main economic drivers in Hardin County. Hardin County is one of the ten largest counties in Kentucky (630 square miles). It's located in the North Central Kentucky region of the state.