Portland, Oregon is 2.5 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: 376 km2 calculated
Portland is the largest city by population in the U.S. state of Oregon, near the confluence of the Willamette and Columbia rivers. Wikipedia