Chuathbaluk is a city in Bethel Census Area, Alaska, United States. At the 2020 census the population was 102, down from 118 in 2010. Chuat…Chuathbaluk is a city in Bethel Census Area, Alaska, United States. At the 2020 census the population was 102, down from 118 in 2010. Chuathbaluk is located at 61°34′32″N 159°14′50″W / 61.57556°N 159.24722°W, on the Kuskokwim River, approximately 100 miles upstream from Bethel. The Russian Mountains, a small circular mountain range, stand just to the north of the town.