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? What are 3Rivers' 2019 holiday hours? Will I receive a PIN (Personal Identification Number) so I can access cash with my debit card? Is there a fee to receive a new Mastercard debit card or Mastercard Platinum credit card?