city, seat (1907) of Caddo county, southwest-central Oklahoma, U.S. It lies along the Washita River. Founded in 1901 when the site was opened to white settlement, the city was named for the Nadako Indians, a Caddo subgroup. Anadarko is the site of the Southern Plains Indian Museum and Crafts Center; the National Hall of Fame for Famous American Indians (Native American), with its outdoor garden of bronzes of noteworthy Native Americans; the tribal museums of the Delaware and Wichita nations; an area office of the Bureau of Indian Affairs; and the Riverside Indian School (1871). Indian City U.S.A., a reconstruction of villages representing seven Native American cultures, is nearby. The annual American Indian Exposition is held there in August. Anadarko is an agricultural trading and processing centre with some light industry, notably carpet milling. Oil and natural gas wells are in the vicinity. Inc. 1901. Pop. (1990) 6,586; (2000) 6,654.