How can I update my mailing address? The quickest and easiest way is to sign on to Online Access and click My Profile --> Request --> Address Change. We’ll update our records as soon as possible. Have more questions? Submit a request 0 Comments Article is closed for comments. Related articles Mailing Address What are my sign-on ID and password for the new mobile app? How do I view my accounts? What is 3Rivers routing number? What is your mailing address/phone number?