Lyndon Center is an unincorporated village and census-designated place (CDP) in the town of Lyndon, Caledonia, Vermont, United States. As of the 2020 census, Lyndon Center had a population of 187. The community is located along the western border of Lyndonville. Lyndon Center has a post office with ZIP code 05850. The community was first listed as a CDP prior to the 2020 census.