Of 10 counties in the Granite State, Coos County is first in terms of its size (1,830 square miles). Coos County is in the North New Hampshire region. New Hampshire's Coos County has around 1,000 acres of residential land 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 nearly $42 million. The average price of residential land for sale in Coos County was $386,554. Browse all residential land and rural property for sale in New Hampshire to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.