The historic City of Leadville is the Statutory City that is the county seat, the most populous community, and the only incorporated municipality in Lake County, Colorado, United States. The city population was 2,602 at the 2010 census and an estimated 2,762 in 2018. Leadville is situated at an elevation of 10,152 feet.
A former silver mining town that lies among the headwaters of the Arkansas River in the heart of the Rocky Mountains, the Leadville Historic District contains many historic structures and sites in its dynamic mining era. In the late 19th century, Leadville was the second most populous city in Colorado, after Denver. Leadville is notable for having many 14,000 foot peaks viewable from town.