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.
Which number on my check is the routing number? Your routing number will always be 9 digits and begin with a 0, 1, 2 or 3. Look in the bottom left corner of your check (not the deposit slip). When you enter your routing number, just enter the 9 digits; no spaces, punctuation or other characters that appear before the 9-digit number. If your check displays an ACH number (this is uncommon), use that instead of the routing number.