Dayton, Ohio is 2.1 times larger than Huntington Beach, California.
Area: 69 km2 calculated
Huntington Beach is a seaside city in Orange County in Southern California. The city is named after American businessman Henry E. Huntington. According to the 2010 census, the city population was 189,992; making it the largest beach city in Orange County in terms of population. Wikipedia
Area: 149 km2 calculated
Dayton is the sixth largest city in the U.S. state of Ohio and is the county seat of Montgomery County. Wikipedia