Oklahoma City is 17 times larger than Lansing, Michigan.
Area: 96 km2 calculated
Lansing is the capital city of the U.S. state of Michigan, and the state's sixth largest city. It is located mostly in Ingham County, though a small portion of the city extends into Eaton County. 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