In 1867 after the Civil War, the Creek Indians adopted a constitution which divided there nation into six districts. Everything northeast of the Arkansas River, including Tulsa, became the Coweta district. The political center of this district was in a log courthouse on Coweta Creek, about a one-fourth of a mile west from the modern day center of the downtown Coweta. The Post Office was established on May 24, 1897, and was named after the Koweta Mission.