Facts and Figures Official Name: United States of America Capital City: Washington, DC Languages: English, and languages of many cultures Official Currency: US Dollar Religions: Varied, many. Population: 275,943,000 Indigenous Population: 1,900,000 Land Area: 9,166,600 sq km (3,539,224 sq miles) (includes all 50 states, and the District of Columbia) Number of languages: 213. Of those, 176 are living languages, 2 are second languages without mother tongue speakers, and 35 are extinct. Number of Indigenous groups: +500 Native Vascular plant species: 19, 473 Endemic Species: ? % Species endemism: ? Total no. threatened: 4,669 % Species threatened: 24% Medicinal plant estimate: 2,147 species from 760 genera and 142 US Department of Interior, Bureau of Indian Affairs List of Federally Recognized Tribes within the Contiguous 48 States List of Federally Recognized Tribes within Alaska Tribal Leaders Directory Tribal Nations on the Web Alabama Coushatta Blackfeet Tribe of the Blackfeet Indian Reservation of Montana Cabazon Band of Mission Indians Caddo Nation Cherokee Nation Cheyenne and Arapaho Tribes of Oklahoma Cheyenne River Sioux Tribe Chickasaw Nation Chickaloon Village Chippewa Cree Business Committee - Rocky Boy, Montana Chitimacha Tribe of Louisiana Choctaw Nation of Oklahoma Citizen Potawatomi Nation Confederated Tribes of the Colville Reservation - Colville Tribe Confederated Salish & Kootenai Tribal Council Confederated Tribe of Siletz Indians Confederated Tribes of the Umatilla Indian Reservation Confederated Tribes of Warm Springs Indians Cook Inlet Tribal Council Cow Creek Band of Umpqua Indians Crow Tribal Council Delaware Tribe of Oklahoma Eastern Band of Cherokee Indians Fallon Paiute-Shoshone Tribe Fort Belknap Tribal Council Fort Peck Tribal Council Gila River Indian Community Ho Chunk Nation of Wisconsin Hopi Cultural Preservation Office Iowa Tribe of Oklahoma Kaw Nation of Oklahoma Klamath History Makah Nation Mashantucket Pequot Musem & Research Center Menominee Tribe of Wisconsin Miami Nation Mohican Nation, Stockbridge-Munsee Band Muscogee (Creek) Nation Navajo Nation Northern Cheyenne Tribal Council Osage Nation Pawnee Nation of Oklahoma Prairie Island Indian Community Pyramid Lake Paiute Quapaw Tribe of Oklahoma Rosebud Sioux Tribe Sac and Fox Nation Salt River Pima-Maricopa Indian Community Sault Ste. Marie Tribe of Chippewa Indians Seminole Tribe of Florida Seminole Nation of Oklahoma Seneca Nation of Indians Sisseton Wahpeton Sioux Tribe Skull Valley Band of Goshute Southern Ute Indian Tribe Spokane Tribe of Indians Standing Rock Sioux Tribe Suquamish Tribe Tachi Yokut of the Santa Rosa Rancheria Three Affiliated Tribe Tlingit and Haida Indian Tribes of Alaska Tonkawa Tribe of Oklahoma Uintah & Ouray Ute Reservation United Keetoowah Band of Cherokee Indians Washoe Tribe of Nevada and California Wichita and Affiliated Tribes Wyandotte Tribe of Oklahoma Yakama Nation AGIS, Native American Food Plants AGIS, Medicinal Plants of Native America Moreman, D. 1997. Native American Ethnobotany. Timber Press. Portland, Oregon.   Back to Regional Programmes