thumb|Bonanza-Empire Chief mine and mill, on the Alpine Loop. The mill ruins were stabilized in 2000 by the Bureau of Land Management and Hinsdale County Historical Society. In 2007–2008, the mill ruins were demolished by an avalanche. Hinsdale County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 788, making it the second least-populous county in Colorado. With a population density of only , it is also the least-densely populated county in Colorado. The county seat and only incorporated municipality in the county is Lake City. The county is named for George A. Hinsdale, a prominent pioneer and former Lieut. Governor of Colorado Territory.
thumb|bonanza-empire chief mine and mill on the alpine loop the mill ruins were stabilized in 2000 by the bureau of land management and hinsdale county historical society in 2007–2008 the mill ruins were demolished by an avalanche hinsdale county is a county located in the us state of colorado as of the 2020 census the population was 788 making it the second least-populous county in colorado with a population density of only  it is also the least-densely populated county in colorado the county seat and only incorporated municipality in the county is lake city the county is named for george a hinsdale a prominent pioneer and former lieut governor of colorado territory