The Town of Carbondale is a Home Rule Municipality in Garfield County, Colorado, United States. The town population was 6427 at the 2010 United States Census. The town is located in the mid valley of the Roaring Fork River, downstream from Aspen and upstream from the mouth of the Roaring Fork at Glenwood Springs. The town proper sits on the south bank of the river, at the confluence of the Crystal River.