Gainesville, Florida is 3.5 times larger than Costa Mesa, California.
Area: 41 km2 calculated
Population: 111,918 (2012)
Costa Mesa is a city in Orange County, California. The population was 109,960 at the 2010 United States Census. Wikipedia
Area: 145 km2 calculated
Population: 126,047 (2012)
Gainesville is the county seat and largest city in Alachua County, Florida, and the principal city of the Gainesville, Florida Metropolitan Statistical Area. The population of Gainesville in the 2010 United States Census was 124,354. Wikipedia