The year 2000 census lists the county population as 74,798. Almost three quarters of the people identify themselves as American Indians, primarily Navajo and Zuni, but also other tribes to include Apache, Cherokee, Cheyenne, Chippewa, Choctaw, Creek, Iroquois, Kiowa, Pima, Shoshone, Sioux, Alaskan Athabaskan, Blackfoot, Chickasaw, Comanche, Crow, Osage, Paiute, Potawatomi, Seminole, Tlingit, and Tohono O'Odham.

The county seat is Gallup.

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• Some places listed on the National Register of Historic Places are also designated as National Historic Landmarks. We indicate these landmarks with a boldface National Register number.