The overall value of farms and ranches for sale in Kentucky's Robertson County recently on Land.com was nearly $5 million. This represents 1,000 acres of land for sale in Robertson County. Robertson County ranks 110th out of 120 counties in the Bluegrass State for the total acreage of land currently advertised for sale. Mount Olivet featured the most land for sale. Government and state-level services are the main economic drivers in Robertson County. Robertson County is the 120th largest county (100 square miles) in Kentucky. It's located in the North Central Kentucky region of the state.