Rockford is its third-largest city
[DOC] [TLE] Aurora now 2nd-largest city in Illinois - tribunedigital-chicagotribune [PAR] Jul 11, 2003 ... ... Aurora has become the second-largest city in Illinois, displacing Rockford, ... 
largest city and the nation's third largest, though its population... [DOC] [TLE] Rockford One of Fastest Shrinking Cities In America - Illinois Review [PAR] May 21, 2015 ... By Ulysses Arn - Rockford is known as the Forest City, that nickname ... the 
Shrinking City as Illinois' 3rd largest city was one of the top ten cities in the ... 10th 
largest city as its population cracked the one million mark in 2014.