The list you quoted says Peoria, IN but the dot on the map and the table at the bottom says Peoria, IL (I’m pretty sure there isn’t a Peoria, IN)

No dot on the map for Niles and Benton Harbor, MI at all, nor are they in the table at the bottom of the page.

I shouldn’t be surprised at a lack of thoroughness on the internet, but such a data driven website you think would hold itself to a higher standard.