Cimarron is an unincorporated town and U.S. Post Office in Montrose County, Colorado, United States. The Cimarron Post Office has the ZIP Code 81220.
Cimarron is a small community on the Cimarron River, just south of the Black Canyon of the Gunnison, and just outside of Curecanti National Recreation 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).
Cimarron is located at 38°26′30″N 107°33′22″W (38.441758,-107.555981).
The Cimarron River is a 22.0-mile-long (35.4 km) tributary that joins the Gunnison River in Curecanti National Recreation Area near Cimarron, Colorado. The river's source is the confluence of two forks near Silver Jack Reservoir in the Uncompahgre National Forest.
A Denver & Rio Grande Western narrow gauge trestle is located near the confluence of the Cimarron and the Gunnison.
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