States have no requirement for consistent pronunciation. A favorite of mine is near me and where I lived when I was very young. Des Plaines, Illinois is pronounced Dih Splaynz Illuhnoy. One s is pronounced s, one is pronounced z, and one isn't pronounced at all.
That's interesting. My English teacher and my geography teacher once had an argument over the correct pronunciation of "Des Moines"; we were covering the topics of American history and economy, respectively, at that time in those subjects. I guess "Des Plaines" is Spanish whereas "Des Moines" is French.
How was the Oktoberfest? I heard a Maß of beer costs about $13. 😨
Excessive literalism about the origin of names will end up leading to you being the person pronouncing St. Louis as San Louie.