There was a total of around $188 million of land for sale in Windham County, Vermont, recently on Land.com. The total acreage of all Windham County farms, rural land, hunting land and other land for sale was approximately 4,000 acres. Windham County ranks first in the Green Mountain State based on the total amount of acres of land for sale of the 14 counties in the Green Mountain State. Wilmington featured the most land for sale. Based on its natural assets, tourism and recreation are important factors in the Windham County economy. Windham County is one of the ten biggest counties in Vermont (798 square miles). It's located in the South Vermont region of the state.