Indigenous peoples in what is now the contiguous United States, including their descendants, are commonly called “American Indians”, or simply “Indians” domestically, or “Native Americans” by the USCB. In Alaska, indigenous peoples belong to 11 cultures with 11 languages. These include the St. Lawrence Island Yupik, Iñupiat, Athabaskan, Yup’ik, Cup’ik, Unangax, Alutiiq, Eyak, Haida, Tsimshian, and Tlingit,who are collectively called Alaska Natives. Indigenous Polynesian peoples, which include Marshallese, Samoan, Tahitian, and Tongan, are politically considered Pacific Islands American but are geographically and culturally distinct from indigenous peoples of the Americas.
Native Americans in the United States make up 0.97% to 2% of the population. In the 2010 census, 2.9 million people self-identified as Native American, Native Hawaiian, and Alaska Native alone, and 5.2 million people identified as U.S. Native Americans, either alone or in combination with one or more ethnicity or other races. 1.8 million are recognized as enrolled tribal members.Tribes have established their own criteria for membership, which are often based on blood quantum, lineal descent, or residency. A minority of US Native Americans live in land units called Indian reservations. Some California and Southwestern tribes, such as the Kumeyaay, Cocopa, Pascua Yaqui and Apache span both sides of the US–Mexican border. Haudenosaunee people have the legal right to freely cross the US–Canadian border. Athabascan, Tlingit, Haida, Tsimshian, Iñupiat, Blackfeet, Nakota, Cree, Anishinaabe, Huron, Lenape, Mi’kmaq, Penobscot, and Haudenosaunee, among others live in both Canada and the US.