Lots of states use the same names over and over. For example, Portland, OR being named after Portland, Maine. It gets worse, because some states have multiple towns of the same name. There are five different towns in Wisconsin all called Springfield!
I knew that Springfield was used for the Simpsons town because there we so many that used that name, but I thought it was just an oddity or something.
I guess I was indeed in for a surprise!
Thanks for the link!