Duncan, Colorado was a post office in Saguache County, Colorado

Saguache County, Colorado

Saguache County is the seventh most extensive of the 64 counties of the state of Colorado of the United States. The county name comes from a Ute language word meaning “blue earth” or “water at blue earth”. The county population was 5,917 at U.S. Census 2000...

 about 8 miles south of Crestone, Colorado

Crestone, Colorado

Crestone is a statutory town in Saguache County in Southwestern Colorado, United States. The population was 73 at the 2000 census. It is a small village at the foot of the western slope of the Sangre de Cristo Range, in the northern part of the San Luis Valley. Crestone was a small mining town, but...

. Only one house remains, John Duncan's cabin. The place, considered a ghost town

Ghost town

A ghost town is an abandoned town or city. A town often becomes a ghost town because the economic activity that supported it has failed, or due to natural or human-caused disasters such as floods, government actions, uncontrolled lawlessness, war, or nuclear disasters...

, was on the Luis Maria Baca Grant No. 4

Luis Maria Baca Grant No. 4

The Luis Maria Baca Grant No. 4, south of Crestone, Colorado, was a large land grant made in 1860 by the United States to the heirs of the original Vegas Grandes Grant at Las Vegas, New Mexico. Title to the grant at Las Vegas was clouded by a second grant of the same land. The Baca heirs were...

 but is now within Rio Grande National Forest

Rio Grande National Forest

Rio Grande National Forest is a 1.86 million acre U.S. National Forest located in southwestern Colorado. The forest encompasses the San Luis Valley, which is the world's largest agricultural alpine valley, as well as one of the worlds largest high deserts located around mountains. The...

. The town was platted by John Duncan, lots were sold, gold mines promoted, home were built, businesses established, even a newspaper, The Duncan Eagle, but as the town, and many of the associated mines, were on the property of the Baca Grant the residents of the town were forced to move when title to the Grant was confirmed in 1897 and court orders to evict the residents of Duncan were enforced by U.S. Marshals in 1900. Some of the residents of Duncan moved to a new townsite, just off the Grant property to the south, Liberty, Colorado. There was a post office at Duncan from November 21, 1892 to September 15, 1900.

In 2011 plans were announced by Historicorps to renovate the cabin which will made available for public rental.