Dar Williams fans: The song "Iowa"?

OKay, I posted another question and someone mentioned Dar Williams and the song "Iowa". I looked it up, listened to it, read the lyrics. She's from New York! The song doesn't really have anything to do with Iowa (which, incidentally, is my home), so why is it titled "Iowa"? Help please? If anyone knows the history of this song or Dar Williams related to this?

who the fuk is he?