Carbon County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 64,749. The county is part of the Northeast Pennsylvania region of the state. The county borders Lehigh and Northampton counties in the state's Lehigh Valley region to its south, Monroe County to its east, Luzerne County to its north, and Schuylkil…Carbon County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 64,749. The county is part of the Northeast Pennsylvania region of the state. The county borders Lehigh and Northampton counties in the state's Lehigh Valley region to its south, Monroe County to its east, Luzerne County to its north, and Schuylkill County to its west. The county is approximately 33 miles northwest of Allentown, the state's third-largest city, and 117 miles west of New York City, the nation's largest city.