Oklahoma City is 12 times larger than Hampton, Virginia.
Area: 136 km2 calculated
Hampton is an independent city in Virginia. As of the 2010 census, the population was 137,436. As one of the seven major cities that compose the Hampton Roads metropolitan area, it is on the southeastern end of the Virginia Peninsula. Hampton traces its history to 1607. Wikipedia
Area: 1,682 km2 calculated
Oklahoma City is the capital and largest city of the U.S. state of Oklahoma. The county seat of Oklahoma County, the city ranks 27th among United States cities in population. The population grew following the 2010 Census, with the population estimated to have increased to 610,613 as of July 2013. Wikipedia