After a change of address is initiated, how long will USPS retain the new address information in their system?

The new address information provided to USPS after a change of address is retained for 18 months. This retention period is designed to ensure that the mail is forwarded appropriately during the transitional phase of a person's move. Keeping the new address on file for this length of time allows for consistent delivery of mail and ensures the customer does not miss any important correspondence that may arrive at the previous address during that period.

The longer retention compared to a shorter period is beneficial for individuals who may not have immediately updated their address with all correspondents, allowing ample time for mail to catch up to the new address. After this 18-month period, the information is no longer available for forwarding purposes, which encourages customers to keep their address information current to prevent any disruption in mail delivery.