Aurora is one of the principal cities of the Denver-Aurora-Lakewood, CO Metropolitan Statistical Area (Metro Denver). The city's population was 325,078 in the 2010 census, which made it the third most populous city in the state of Colorado and the 56th most populous city in the United States.
The first nine numbers in the lower, left-hand part of your check after the MICR character is your routing number. 1  Be sure to exclude any preceding MICR characters when determining your routing number.  Following your routing number, the next set of numbers, up until the next MICR character, is your account number.
Every bank has a nine-digit routing number. In most cases, that number can be found on the bottom left side of a check for an account from that bank. The number next to that, which can be of varying lengths, is the account number. The routing number is used to route or direct banking transactions.