Cimarron City is an American one-hour Western television series, starring George Montgomery as Matt Rockford and John Smith as Lane Temple, airing for 26 episodes on NBC from 1958 to 1959 before being canceled. Cimarron City is a boomtown in Logan County, Oklahoma, north of Oklahoma City. Rich in oil and gold, Cimarron City aspires to become the capital of the future state of Oklahoma, to be created in 1907.