What is the second most urban city in the United States?

[Steely Dan]

Originally Posted by JAYNYC

So West Chicago, IL isn't in the Chicago city limits, but West Los Angeles, CA is in the Los Angeles city limits.

West Chicago, IL is not within Chicago's city limits.

it is an independently incorporated municipality that isn't even in the same county as the City of Chicago.

educate yourself: https://en.wikipedia.org/wiki/West_Chicago,_Illinois