Omaha, Nebraska is 2.3 times larger than Minneapolis.
Area: 151 km2 calculated
Minneapolis, officially the City of Minneapolis, is the county seat of Hennepin County, and largest of the Twin Cities, the 14th-largest metropolitan area in the United States, containing approximately 3.8 million residents. Wikipedia
Area: 342 km2 calculated
Omaha is the largest city in the state of Nebraska, United States, and is the county seat of Douglas County. It is located in the Midwestern United States on the Missouri River, about 10 miles north of the mouth of the Platte River. Wikipedia