you should add alternative spelling for literally every city on here. I missed so many because I accidentally put a second t (patterson for paterson). or like winston salem you should allow salem. and other abbreviations like vegas, philly, okc, north vegas, slc, etc... you should also update the populations/cities (unless your wanting to just go with the 2020 census until the next census) other than that this is a pretty good quiz.
I've made some corrections and added two columns.
The original version of this quiz is here.
this one on cities from the south by JonLeeTsunami.