Change of Address
Officially updating your mailing address with the postal service and your accounts so mail follows you.
A change of address is the formal process of updating where your mail and official correspondence go. In the US, you file it with the postal service (USPS), which forwards most first-class mail to your new address for a set period, buying you time to update every account directly.
Filing with the post office is not the end of it. Forwarding is temporary and incomplete, so you still need to update your address on banks, credit cards, insurance, employers, government IDs, subscriptions, and anything that bills you. The forwarding window exists to catch what you miss, not to replace the work.
Time it to start on your move date. File too early and mail redirects before you have left; too late and statements, checks, or packages land at an address that is no longer yours. Set a reminder to check for misdelivered mail in the first month at the new place.