text: MICR is "magnetic ink character recognition" ... machines read these characters by means of the special magnetic ink with which they are printed.\n\nThe MICR (pronounced Mike-er) line on a check or deposit ticket is the line with account number. The number before your account number are "routing and transit numbers". These numbers are a code that gives information about the bank.\n\nSo the answer is, look on a check or deposit ticket.