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view the Cimarron County site still on Ancestry's server
LaRae Halsey-Brooks, and
Eireann Brooks are the County Co-Coordinators

Cimarron County is the westernmost county in the U.S. state of Oklahoma. Its county seat is Boise City.

Cimarron County was created at statehood in 1907.

Before the Oklahoma Organic Act was passed in 1890, the area had belonged to what was known as "No-Man's Land", also referred to as the "Public Land Strip". This was a relatively lawless area, with no organized government, and several outlaws sought refuge within its borders.

In 1890, the strip became known as Beaver County, Oklahoma Territory. Informally, it was known as the "Oklahoma Panhandle". Only two communities were in the strip. One, Carrizo (near present-day Kenton),[4] had 83 residents in 1890, while the other, Mineral City, had 93 residents. Otherwise, the land was used primarily by sheepherders from New Mexico.

Several communities vied to become county seat after statehood: Boise City, Cimarron, Doby, Hurley, Willowbar, and Centerview. A county election in 1908 selected Boise City.