Tulsa is the second-most-populous city in the state of Oklahoma, after Oklahoma City, and is the 47th-most-populous city in the United States. The population was 413,066 as of the 2020 census. It is the principal municipality of the Tulsa metropolitan area, a region with 1,034,123 residents. The city serves as the county seat of Tulsa County, the most densely populated county in Oklahoma, with urban development extending into Osage, Rogers and Wagoner counties.

The Muscogee Nation, or Muscogee (Creek) Nation, is a federally recognized Native American tribe based in the U.S. state of Oklahoma. The nation descends from the historic Muscogee Confederacy, a large group of indigenous peoples of the Southeastern Woodlands. Official languages include Muscogee, Yuchi, Natchez, Alabama, and Koasati, with Muscogee retaining the largest number of speakers. They commonly refer to themselves as Este Mvskokvlke. Historically, they were often referred to by European Americans as one of the Five Civilized Tribes of the American Southeast.