Tulsa is the second-most populous city in the U.S. state of Oklahoma and ranks as the 48th-most populous city in the United States. As of the 2020 census, the city had a population of 413,066. It serves as the principal municipality of the Tulsa metropolitan area, which has a total population of 1.06 million residents.
The city is the county seat of Tulsa County, which is the most densely populated county in Oklahoma. Urban development from the city extends into the neighboring counties of Osage, Rogers, and Wagoner.