) is an island in the Shumagin Islands
south of mainland Alaska
. The largest community in the area, Sand Point
, is located on the northwest coast. Popof Island is 10 miles (16 km) long, 5 miles (8 km) wide and the peak elevation is 1,550 feet (472 meters). It is located at . It has a land area of 93.651 km² (36.159 sq mi) and a total population of 952 persons at the 2000 census
A herd of introduced bison is on the uninhabited side of the island, and currently numbers 120.