The Citibank routing number for a particular checking account is printed on the bottom-left edge of every check associated with the account. The routing number has nine digits. The nine digits are immediately preceded and followed by a three-dot symbol to distinguish them from other numbers printed on the check face.
Citibank has more than 15 different routing numbers. Each Citibank routing number is associated with checking accounts originally opened in a particular region of the U.S. If a blank check is not available, visit citibank.com to view a list of routing numbers organized by region.