Ninilchik is a census-designated place in Kenai Peninsula Borough, Alaska, United States. At the 2010 census the population was 883.It is considered an Alaska Native village under the Alaska Native Claims Settlement Act. In the 1970s, villagers formed the Ninilchik Native Association Incorporated. Later the Ninilchik Traditional Council was established as the government of Alaska Natives in this area.The Alaska Native people of Ninilchik have ancestors of Aleut and Alutiiq descent, as well as some Dena'ina. Many also include Russian ancestors, from a couple of men who settled here with their Alutiiq wives and children in 1847, and later migrants. Russian was widely spoken in the village for years. Due to the community's isolation, this Russian dialect continued much in its mid-19th century form. With some surviving speakers, it has been studied in the 21st century.