The Cimarron Historic District is a historic district on the south side of Cimarron, New Mexico, United States. The district is located south of US Route 64 on the east and west sides of New Mexico Highway 21. In 1973, the district was added to the U.S. National Register of Historic Places. According to the National Register, the district contains 1940 acre and contains 6 significant buildings. There are fifteen buildings and historic sites shown on a 1986 map of the historic district