Located in Central New Hampshire, 954-square-mile Merrimack County is one of the ten biggest counties in the Granite State. Merrimack County, New Hampshire, includes nearly 1,000 acres of farms for sale based on recent Land Network data. The combined market value of farms, rural land, hunting land and other land for sale here was about $6 million. The average price of farmland for sale in Merrimack County was $3 million. Browse all New Hampshire 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.