Sorry if this is late, but I went back to the known civilian targets list and composed a list of the ten largest remaining cities in the United States using the information provided. I think I must have missed something because New York does not appear to have been destroyed.
I've also just had the very depressing realization that the
Terminal Tower is probably the tallest standing structure remaining in the midwestern United States and may once again be the tallest building in North America outside of New York and Las Vegas.
1.) New York ~ 8,391,881
2.) Baltimore ~ 637,418*
3.) Las Vegas ~ 567,641**
4.) Oklahoma City ~ 560,333
5.) Tucson ~ 543, 910 ***
6.) Mesa ~ 467,157
7.) Virginia Beach ~ 433,575
8.) Cleveland ~ 431,369
9.) Raleigh ~ 405,612
10.) Colorado Springs ~ 399,827 ****
* If not completely destroyed, the city would have been severely damaged during the destruction of DC.
** May have been destroyed with Nellis Air Force Base.
*** May have been destroyed due to being within the vicinity of Davis-Monthan AFB, Luke AFB, Williams AFB and a Marine Corps Air Station.
**** Very likely destroyed due to NORAD HQ being within city limits