It is the eighth-most populous city in the state. Among its total population as of 2020, 55,639 were in Northampton County and 19,343 were in Lehigh County. As of the 2020 census, Bethlehem had a total population of 75,781.
Bethlehem is a city in Northampton and Lehigh Counties in the Lehigh Valley region of eastern Pennsylvania, United States.