Culberson County is a county located in the U.S. state of Texas. As of the 2010 census, its population was 2,398. The county seat is Van Horn. Culberson County was founded in 1911 and organized the next year. It is named for David B. Culberson, a lawyer and Confederate soldier in the American Civil War.Culberson County is in the Central Time Zone, however, western Culberson County unofficially observes Mountain Time.