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 2 and SH-10 in Welch, Oklahoma. All signage for SH-2 ends at US-59/SH-10 in Welch. However, the official definition of the highway contains an unsigned concurrency with US-59 to the point where it crosses the state line into Kansas. The northern SH-2, between Vinita and the Kansas state line, was once part of US-73. Until the early 1980s a portion of SH-2 was one of the last unpaved state highways in the Oklahoma road network. The section between the communities of Kosoma, Oklahoma and Stanley, Oklahoma in the Kiamichi River Valley, remained gravel. Its builders during the 1930s and 1940s, in