Cimarron is a village in Colfax County, New Mexico, United States, which sits on the eastern slopes of the Sangre de Cristo Mountains. The population was 792 at the 2020 census, making it the fourth most populous municipality in Colfax County. Cimarron sits on the Cimarron River, a tributary of the 900 mile-long Canadian River, whose headwaters are at the Eagle Nest Dam, with the main part of town lying along U.S. Route 64.