Union County is in Central Ohio. Of the 88 counties in the Buckeye State, Union County ranks 49th in terms of size (436 square miles). The total value of 1,000 acres of farms recently listed for sale in Union County, Ohio, was almost $9 million. The average price of farmland for sale in Union County was $2 million. Farms for sale in Union County feature livestock including horses, pig and goats. Browse all Ohio farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future business or lifestyle needs.