Carbonado is a town in Pierce County, Washington, United States. Carbonado is located near the Carbon River in northern Pierce County, approximately 50 miles southeast of Seattle and 12 miles northwest of Mount Rainier National Park. Carbonado served as an important coal mining community in the late nineteenth and early twentieth centuries, when the town operated the largest coal mine in Pierce County. The population was 610 at the 2010 census. Carbonado was one of quite a few towns in the Carbon River valley to be settled during an economic boom in the region. The boom was brought on by raw material demands in nearby growing towns such as Seattle and Tacoma.