West Dummerston is an unincorporated village and census-designated place (CDP) in the town of Dummerston, Windham County, Vermont, United States. As of the 2020 census, West Dummerston had a population of 77. The community is located along Vermont Route 30 and the West River, north-northwest of Brattleboro. West Dummerston has a post office with ZIP code 05357.