The value of all farms, ranches, and rural real estate for sale in Mercer County recently was almost $42 million, representing a total of 801 acres of land for sale in Mercer County. Mercer County ranks 43rd in Kentucky for the combined amount of land currently advertised for sale. Of all farms, ranches, and rural real estate for sale in Mercer County, Harrodsburg featured 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.