Oklahoma City (/oklhomsti/), often shortened to OKC, is the capital and largest city of the U.S. state of Oklahoma. The county seat of Oklahoma County, the city ranks 27th among United States cities in population. The population grew following the 2010 Census, with the population estimated to have increased to 643,648 as of July 2017. As of 2015, the Oklahoma City metropolitan area had a population of 1,358,452, and the Oklahoma City-Shawnee Combined Statistical Area had a population of 1,459,758 (Chamber of Commerce) residents, making it Oklahoma's largest metropolitan area.
Oklahoma City's city limits extend into Canadian, Cleveland, and Pottawatomie counties, though much of those areas outside the core Oklahoma County area are suburban or rural (watershed). The city ranks as the eighth-largest city in the United States by land area (including consolidated city-counties; it is the largest city in the United States by land area after Houston, whose government is similarly not consolidated with that of a county or borough).
Lying in the Great Plains region, Oklahoma City has one of the world's largest livestock markets. Oil, natural gas, petroleum products and related industries are the largest sector of the local economy. The city is in the middle of an active oil field and oil derricks dot the capitol grounds. The federal government employs large numbers of workers at Tinker Air Force Base and the United States Department of Transportation's Mike Monroney Aeronautical Center (these two sites house several offices of the Federal Aviation Administration and the Transportation Department's Enterprise Service Center, respectively).
The city has been home to the Oklahoma City Thunder of the National Basketball Association since the 2008-09 season, where several notable players have played, including Russell Westbrook, Kevin Durant, Paul George, and Carmelo Anthony. The team plays its home games at Chesapeake Energy Arena.
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