Belmont is an unincorporated community and census-designated place in Cambria County, Pennsylvania, United States. The population was 2,784 at the 2010 census. Belmont is located in southwestern Cambria County at 40°17′6″N 78°53′17″W / 40.28500°N 78.88806°W. It is in southern Stonycreek Township and western Richland Township and is bordere…Belmont is an unincorporated community and census-designated place in Cambria County, Pennsylvania, United States. The population was 2,784 at the 2010 census. Belmont is located in southwestern Cambria County at 40°17′6″N 78°53′17″W / 40.28500°N 78.88806°W. It is in southern Stonycreek Township and western Richland Township and is bordered to the north by the boroughs of Lorain and Geistown and the community of Oakland. The city of Johnstown touches the northwest corner of Belmont, and Somerset County is on the southern border, across the Stonycreek River.