Thorne Bay is a city in Prince of Wales-Hyder Census Area, Alaska, United States. As of the 2020 census the population was 476, up fro…Thorne Bay is a city in Prince of Wales-Hyder Census Area, Alaska, United States. As of the 2020 census the population was 476, up from 471 in 2010. Thorne Bay is located at 55°40′38″N 132°33′22″W / 55.677232°N 132.556246°W.