The value of all farms and rural land for sale in Vermont's Caledonia County recently was around $69 million, representing a total of 4,509 acres of land for sale in Caledonia County. Caledonia County ranks seventh based on the combined acreage of land for sale of the 14 counties in the Green Mountain State. Of all locations in Caledonia County with land for sale, Saint Johnsbury had the most land for sale. Caledonia County is one of the ten largest counties in Vermont (657 square miles). It's located in the North Vermont region of the state.