Mount Carbon is a borough in Schuylkill County, Pennsylvania, two miles south of Pottsville. It was formed from North Manheim Township in 1864. The population was 79 at the 2010 census. The borough is the smallest municipality in Schuylkill County. South Centre Street, Main Street, Sherwood Drive and the Mt. Carbon Arch are the only streets of the borough.
Mount Carbon has also had one of the youngest mayors in history, Mayor Jeffrey Dunkel was sworn in as mayor when he was only 18 years old. The borough is considering merger with the City of Pottsville. Merger was shot down by the residents and the borough has been making financial progress since new council took the helm.