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 5 of the H.E. Bailey Turnpike). Five miles (8 km) east of where this three-route concurrency breaks up, SH-5 turns south in Walters, with the mainline being taken over by State Highway 53. SH-5 heads east again toward Temple, where it has a brief concurrency with State Highway 65, and then turns southeast to pass through Hastings before ending at US-70 in Waurika. SH-5 has three lettered spur routes. Oklahoma State Highway 5 State Highway 5 (SH-5 or OK-5) is the name assigned to two distinct state highways in the U.S state of Oklahoma. One runs for through extreme southwestern Oklahoma,