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 0.71 inhabitants per square mile (0.27/km2), 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.
