Aniak (Central Yupik: Anyaraq) is a city in the Bethel Census Area in the U.S. state of Alaska. At the 2010 census the population was 501, down from 572 in 2000.
61°34′44″N 159°33′1″W (61.578821, -159.550255).
Aniak is located on the south bank of the Kuskokwim River at the head of Aniak Slough, 59 miles (95 km) southwest of Russian Mission in the Yukon-Kuskokwim Delta. It lies 92 miles (148 km) northeast of Bethel and 317 miles (510 km) west of Anchorage.
According to the United States Census Bureau, the city has a total area of 8.8 square miles (23 km2), of which, 6.5 square miles (17 km2) of it is land and 2.3 square miles (6.0 km2) of it (25.82%) is water.
Climate is maritime in the summer and continental in winter. Temperatures range between -72 and 92 °F. Average yearly precipitation is 19 inches (480 mm), with snowfall of 60 inches (1.5 m).
Aniak first appeared on the 1940 U.S. Census as an unincorporated village. It formally incorporated in 1972.
As of the census of 2000, there were 572 people, 174 households, and 133 families residing in the city.