Lorain is a borough in Cambria County, Pennsylvania, United States. It is part of the Johnstown, Pennsylvania Metropolitan Statistical Area. The population was 759 at the 2010 census. Lorain is located in southwestern Cambria County at 40°17′48″N 78°53′45″W / 40.29667°N 78.89583°W. It is bordered on the west by the city of Johnstown.