Of 10 counties in the White Mountain State, Merrimack County ranks fourth in terms of size (954 square miles). Merrimack County is in Central New Hampshire. The total value of about 1,000 acres of recreational land and property recently listed for sale in New Hampshire's Merrimack County was $400,000. Browse all recreational property for sale in Merrimack County to find the recreational tract that suits your lifestyle needs, from hunting and fishing properties for the outdoor enthusiast to undeveloped acreage ready for future residential-property development. The most common type of land for sale by combined acreage in Merrimack County is residential property.