Oklahoma City, often shortened to OKC, is the capital and most populous city in the U.S. state of Oklahoma. It serves as the county seat of Oklahoma County, though its city limits extend into Canadian, Cleveland, and Pottawatomie counties. As of the 2020 census, the city had a population of 681,054, making it the 21st-most populous city in the United States and the 8th largest in the Southern United States.
The city ranks as the tenth-largest city by area in the United States when including consolidated city-counties. It is also recognized as the second-largest state capital by area, following Juneau, Alaska. The Oklahoma City metropolitan area is the largest in the state, with an estimated population of 1.49 million residents.