High Quality Content by WIKIPEDIA articles! An American Indian reservation is an area of land managed by a Native American tribe under the United States Department of the Interior`s Bureau of Indian Affairs. There are about 310 Indian reservations in the United States, meaning not all of the country`s 550-plus recognized tribes have a reservation — some tribes have more than one reservation, some share reservations, while others have none. In addition, because of past land allotments, leading to some sales to non-Indians, some reservations are severely fragmented, with each piece of tribal, individual, and privately held land being a separate enclave. This jumble of private and public real estate creates significant administrative, political, and legal difficulties.