Cimarron is an unincorporated rural hamlet in Montrose County, Colorado, United States.

There is a store with fuel pumps and a post office at Cimarron.

The post office services the rural ZIP Code 81220 area.

The D & RG Narrow Gauge Trestle crosses the Cimarron River gorge just northeast of town, and is on the National Register of Historic Places (#76000172).

[5] Montrose 11 ENE also has a humid continental climate (Köppen Dfb), but with a lower diurnal variation and a higher level of precipitation.