South Hero is the most populous town that is both comprising part of Lake Champlain's largest island of Grand Isle and in Grand Isle County, Vermont. South Hero's population was 1,674 at the 2020 census.
Wikipedia https://en.wikipedia.org/wiki/South_Hero,_Vermont
Official Website https://www.southherovt.org/
Coordinates 44°38'44.509" N -73°18'8.914" E