Omaha Reservation in the context of "Omaha (tribe)"

The Omaha (Omaha-Ponca: Umoⁿhoⁿ) are a federally recognized Midwestern Native American tribe who reside on the Omaha Reservation in northeastern Nebraska and western Iowa, United States. The Omaha Indian Reservation lies primarily in the southern part of Thurston County and northeastern Cuming County, Nebraska, but small parts extend into the northeast corner of Burt County and across the Missouri River into Monona County, Iowa. Its total land area is 796.355 km (307.474 sq mi) and a population of 5,194 was recorded in the 2000 census.

The Omaha people migrated to the upper Missouri area and the Plains by the late 17th century from earlier locations in the Ohio River Valley. The Omaha speak a Siouan language of the Dhegihan branch, which is very similar to that spoken by the Ponca. The latter were part of the Omaha before splitting off into a separate tribe in the mid-18th century. They are also related to the Osage, Quapaw, and Kansa peoples, who also migrated from the Ohio Valley.