Wichita, Kansas is 3.5 times larger than Salem, Oregon.
Area: 123 km2 calculated
Salem is the capital of the U.S. state of Oregon, and the county seat of Marion County. It is located in the center of the Willamette Valley alongside the Willamette River, which runs north through the city. Wikipedia
Area: 430 km2 calculated
Wichita WICH-ə-taw is the largest city in the U.S. state of Kansas and the 49th-largest city in the United States. Located in south-central Kansas on the Arkansas River, Wichita is the county seat of Sedgwick County and the principal city of the Wichita metropolitan area. Wikipedia