South Woodstock is an unincorporated village and census-designated place in the town of Woodstock in Windsor County, Vermont, United States. Its elevation is 1,040 feet, and it is located at 43°33′56″N 72°31′56″W, in the Kedron Valley. A post office was established in South Woodstock in 1828; today, its ZIP code is 05071. The ZCTA for ZIP Code 05071 had a population of 456 at the 2000 census.