Comerica Bank Online Banking Comerica Bank was founded in 1849 in Detroit, Michigan. It is now headquartered in Dallas, Texas where it is considered the largest commercial bank headquartered in the Texas state. Customer Service Telephone 1(800)-522-2265 Online Banking Login How to Log In 1. Go to the bank webpage. 2. Enter your user ID and password. If you forgot your password, click “Forgot Password?” to recover it. How to Enroll 1. Go to the bank webpage. 2. Click “Sign…