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 is 3Rivers routing number? How do I wire money to a 3Rivers member? What are 3Rivers' 2019 holiday hours? Will I receive a PIN (Personal Identification Number) so I can access cash with my debit card?