Located in Central Maryland, 526-square-mile Harford County is one of the ten biggest counties in the Terrapin State. The total value of nearly 1,000 acres of farms recently listed for sale in Harford County, Maryland, was approximately $2 million. The average price of farms for sale in Harford County was $437,960. Browse all Maryland 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 individual needs.