Salem, Oregon is 2.5 times larger than Salinas, California.
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: 50 km2 calculated
Salinas is the county seat and largest municipality of Monterey County, California. Salinas is located 10 miles east-southeast of the mouth of the Salinas River, at an elevation of about 52 feet above sea level. The population was 163,665 at the 2014 census. Wikipedia