Igiugig is a census-designated place (CDP) in Lake and Peninsula Borough, Alaska, United States. The village is at the mouth of the Kvichak River, on Lake Iliamna, in the U.S. state of Alaska. According to the United States Census Bureau, the CDP has a total area of 21.1 square miles (55 square kilometers), of which, 19.8 square miles (51 square kilometers) of it is land and 1.3 square miles (3.4 square kilometers) of it (6.02%) is water. There were 20 housing units at an average density of 1.0/sq mi (0.4/square kilometers). The racial makeup of the CDP was 16.98% White, 71.70% Native American, and 11.32% from two or more races.