Popof Island (Siitikdax̂ in Aleut) 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 (55°18′49″N160°22′29″W).