The value of all farms, hunting land and other rural land and acreage for sale in Belknap County recently was around $199 million, representing a total of 1,065 acres of land for sale in Belknap County. Belknap County ranks seventh out of 10 counties in the state for the combined amount of land currently advertised for sale. Of all locations in Belknap County with farms, rural land, hunting land and other land for sale, Laconia had the most land for sale. Belknap County is one of the ten biggest counties in New Hampshire (470 square miles). It's located in the Central New Hampshire region of the state.