Sheep and cattle ranchers entered this area long before it was opened to homesteaders, and today, farming and ranching constitute the economic base of the county. In 1943, Boise City, the county seat, was accidentally bombed by U.S. servicemen from Dalhart Army Base.
Cimarron County is also the site of Black Mesa, the highest point in Oklahoma.
The Santa Fe Trail is the major tourist attraction of the county and is the theme of a four-day festival held each June. Cimarron County was once home to Hollywood stares Vera Miles and Jack Hoxie. The Tracks We Followed and Edna Farber's Cimarron serve as county history books. Cimarron County is located at the western edge of the Oklahoma panhandle and is bordered by Colorado and Kansas on the north, New Mexico on the west and Texas on the south. The only county in the United States to be bordered by four different states.