Mobile, Alabama is 8 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: 329 km2 calculated
Population: 194,822 (2012)
Mobile is the county seat of Mobile County, Alabama. The population within the city limits was 195,111 as of the 2010 United States Census, making it the third most populous city in the U.S. Wikipedia