Need to reach us? Here's how! Location: 121 S State Street Denver, IA 50622 Phone: 319-984-5635 Fax: 319-984-6123 Mailing Address: PO Box 381 Denver, IA 50622 Toll-Free: 866-376-2241 Touch-Tone Banker: 800-856-2785 Email: mail@bankdsb.com   Interested in applying for a new loan? Do you need a different type of checking account? Contact a member of our experienced staff today!   learn more Need to know how to contact us and when we are open? Find out here! learn more Let us know how we are doing! Leave a message for us on our feedback form. learn more