Located in Central Maryland, 526-square-mile Harford County is one of the ten biggest counties in the Free State. A recent survey of Land Network data records about 1,000 acres of farms for sale in Maryland's Harford County, which is valued at a combined $5 million. The average price of farmland for sale in Harford County was $763,525. 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.