As of 2011, the tribe has 223,279 enrolled members, of whom 84,670 live within the state of Oklahoma and 41,616 live within the Choctaw Nation's jurisdiction. The Choctaw Nation is the third-largest federally recognized tribe in the United States and the second-largest Indian reservation in area after the Navajo. The Choctaw Nation of Oklahoma ( Choctaw: Chahta Okla) is a Native American territory covering about 6,952,960 acres (28,138 km 2 10,864 sq mi), occupying portions of southeastern Oklahoma in the United States.