For the NSA computer, see FROSTBURG. Frostburg is a city in Allegany County, Maryland, United States located at the head of the Georges Creek Valley. It is part of the Cumberland, MD-WV Metropolitan Statistical Area. The population was 7,873 at the 2000 census. Located eight miles (13 km) west of Cumberland, the town is one of the first cities on the "National Road", US 40, and the western terminus of the Western Maryland Scenic Railroad. Since 1991, the city has been served by Interstate 68.