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 45 Oklahoma State Highway 45 State Highway 45 (SH-45 or OK-45) is a state highway in Oklahoma. It runs west-to-east through Woods, Alfalfa and Garfield counties. SH-45 begins at the US-281/SH-14 junction in Waynoka. The first of SH-45 heading east out of Waynoka is concurrent with US-281. US-281 then splits off to the north. SH-45 continues east for to Carmen. SH-45 was first added to the state highway system between May 1926 and November 1927. The original routing of the highway was from Waynoka to SH-8 in Carmen. Before 1963, the section of present-day SH-45 between SH-58 and SH-132 was part