States with the Largest Part of Their Population in 1 City

I do accept quiz suggestions, if your suggestions is chosen then you will receive credit in the description.

City Limits, because the metropolitan would get really complicated, really fast!

Bonus points for anyone who can figure out what city the thumbnail is. Also the data is from the featured "Biggest city in each us state" quiz, if this quiz gets enough plays I will consider making a quiz with the smallest percentage.