A total of 2,000 acres were listed for sale in Mercer County, Kentucky, recently, representing a combined around $40 million in Mercer County land and rural real estate for sale. Mercer County ranks 41st out of 120 counties in Kentucky for the total number of acres of land currently advertised for sale. Harrodsburg had the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Mercer County. Mercer County is the 88th largest county (253 square miles) in Kentucky. It's located in the North Central Kentucky region of Kentucky.