There was a combined approximately $141 million of farms, rural land, hunting land and other land for sale in New Hampshire's Merrimack County recently on Land.com. The total acreage of all Merrimack County land and rural real estate for sale was approximately 4,000 acres. Merrimack County ranks fifth in the Granite State based on the total acres of land for sale of all the counties in the White Mountain State. Of all farms, rural land, hunting land and other land for sale in Merrimack County, Concord featured the most land for sale. Merrimack County is one of the ten largest counties in New Hampshire (954 square miles). It's located in the Central New Hampshire region of New Hampshire.