The Cimarron Historic District is a historic district on the south side of Cimarron, New Mexico, USA. 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.[2] According to the National Register, the district contains 1,940 acres (7.85 km2; 3.03 sq mi) and contains 6 significant buildings.