Your routing number, or routing transit number (RTN) assigned by the ABA, will be assigned based on your account opening location.
ABA routing numbers are assigned as follows:
Northern CA Area – 121002042
Southern CA Area – 122003396
San Diego Area – 122232109
Find your routing number on checks:
Your routing number can also be found at the bottom of your checks. This will show as the first 9-digit number on the bottom left side, located on the MICR number line.
For additional information, please call the CB&T Customer Contact Center during business hours at (800) 400-6080 (available Mon.-Fri., 7am-7pm and Sat., 9am-5pm PT), or visit the nearest branch.