Is it true that every state of the USA except Alaska and Hawaii have a town named Springfield, thus making it the most used name in the U.S.?

It's been said (by Bruce Townley, among others) that every state in the USA has a Springfield. This isn't true; 35 states have a Springfield or a close cousin; but the following states are Springfield-deficient:

Alaska, Arizona, Connecticut, Hawaii, Iowa, Kansas, Montana, Nevada, New Mexico, North Dakota*, Oklahoma, Rhode Island, Utah, Washington, Wyoming.

*North Dakota does have a Springfield Township, but it's mostly an empty spot on the map.

http://springfield.ftldesign.com/