There is a place known as Springfield in 35 of the 50 states. Springfield is not a place name that exists in all 50 states.
Dan Tilque conducted research on the most common toponyms, or place names, in the United States by utilizing the Geographic Names Information Service from the U.S. Geologic Survey, reports About.com. He concluded that the most common toponym used in the United States is Riverside, which can be found in 46 of the 50 states in America. Other place names in the top-10 list include Centerville, Fairview, Franklin, Midway, Fairfield, Pleasant Valley, Troy, Liberty and Union.