Question: What is the 2010 census of the city which has Fountain Hill, Pennsylvania as a suburb? 
Related documents: [0]  [DOC] Fountain Hill is a borough in Lehigh County, Pennsylvania, United States. It is a suburb of Bethlehem, Pennsylvania in the Lehigh Valley region of the state. Fountain Hill is included in the Allentown-Bethlehem-Easton, PA-NJ Metropolitan Statistical Area, which is also included in the New York City-Newark, New Jersey, NY-NJ-CT-PA Combined Statistical Area. [END] 
[1]  [DOC] Bethlehem is a city in Lehigh and Northampton counties in the Lehigh Valley region of the eastern portion of the U.S. state of Pennsylvania. As of the 2010 census, the city had a total population of 74,982, making it the seventh largest city in Pennsylvania, after Philadelphia, Pittsburgh, Allentown, Erie, Reading, and Scranton. Of this, 55,639 were in Northampton County, and 19,343 were in Lehigh County. [END] 
Answer: 
74,982
74,982