The historic City of Leadville is the Statutory City that is the county seat and the only incorporated municipality in Lake County, Colorado, United States. The city population was 2,602 at the 2010 United States Census. Situated at an elevation of 10,152 feet (3,094 m), Leadville is the highest incorporated city and the second highest incorporated municipality in the United States. A former silver mining town that lies near the headwaters of the Arkansas River in the heart of the Rocky Mountains, the city includes the Leadville Historic District, which preserves many historic structures and sites from Leadville's dynamic mining era.