Toksook Bay (TOOK-sook or TUCK-sook) is a city and village on Nelson Island in Bethel Census Area, Alaska. The population was 590 at the 2010 census, up from 532 in 2000. As of 2018, the estimated population was 667, making it the largest village on the island.

Bethel Census Area is a census area in the U.S. state of Alaska. As of the 2020 census, the population is 18,666, up from 17,013 in 2010. It is part of the unorganized borough and therefore has no borough seat. Its largest community is the city of Bethel, which is also the largest city in the unorganized borough.