Try to guess all 50 of the flags; they are of the most populous cities of each state in the United States as of 2010.
(D.C. and territories not included)
According to the 2010 USA Census, city proper
City names and other revealing information have been removed from the flag
All flag images borrowed from their respective Wikipedia pages and then edited by me
Pheonix, Fargo, Cheyenne, and Providence are not on the quiz due to uploading restrictions and quality issues