According to the 2000 census:

Rockford: 150,115
Aurora: 142, 990

However, due to population increases, estimated 2006 populations were:

Rockford: 155,138 (+3.3%)
Aurora: 170, 617 (+19.3%)

...making Aurora the new second-largest city in Illinois.

Just wanted to make sure everyone could get to sleep tonight.


I've got good news and bad news...