The Town of Silver Cliff is the Statutory Town that is the most populous municipality in Custer County, Colorado, United States. The population was 609 at the 2020 census, up from 587 in 2010. Silver Cliff was formed in the late 1870s to house the miners of its namesake, the Silver Cliff mine, and other silver mines in the neighborhood, such as the Bull-Doming…The Town of Silver Cliff is the Statutory Town that is the most populous municipality in Custer County, Colorado, United States. The population was 609 at the 2020 census, up from 587 in 2010. Silver Cliff was formed in the late 1870s to house the miners of its namesake, the Silver Cliff mine, and other silver mines in the neighborhood, such as the Bull-Domingo. The town, incorporated in 1879, had 5,040 residents by the 1880 census, making it the third most populous town in Colorado, after Denver and Leadville.