Akron, Ohio is 6.5% larger than Pittsburgh.
Area: 162 km2 calculated
Akron is the fifth largest city in the U.S. state of Ohio and is the county seat of Summit County. It is located in the Great Lakes region approximately 39 miles south of Lake Erie along the Little Cuyahoga River. As of the 2010 census, the city had a population of 199,110. Wikipedia
Area: 153 km2 calculated
Pittsburgh is the seat of Allegheny County and with a population of 305,841 is the second-largest city in the U.S. state of Pennsylvania. With a metropolitan CSA population of 2,659,937, it is the largest in both the Ohio Valley and Appalachia and the 20th-largest in the U.S. Wikipedia