Oklahoma County, Oklahoma Oklahoma County, Oklahoma Oklahoma County is a county located in the central part of the U.S. state of Oklahoma. As of the 2010 census, the population was 718,633, making it the most populous county in Oklahoma. The county seat is Oklahoma City, the state capital. Oklahoma County is at the heart of the Oklahoma City Metropolitan Statistical Area. Oklahoma County is one of seven counties in the United States to share the same name as the state it is located in (the other six counties are Arkansas County, Hawaii County, Idaho County, Iowa County, New York County (known commonly as
Oklahoma State Highway 29 in Elmore City. SH-29 next meets Interstate 35 at its Exit 66. Soon after passing under the Interstate, SH-29 meets U.S. Highway 77, and the two highways overlap over the Washita River into Wynnewood. US-77 splits off in downtown Wynnewood, and SH-29 continues eastward for 12 more miles before ending at US-177. SH-29's single lettered spur is SH-29A, which runs for to the small town of Foster. Oklahoma State Highway 29 State Highway 29 (abbreviated SH-29) is an east–west state highway in the U.S. state of Oklahoma. It runs for through Stephens Co. and Garvin Co., and has one lettered