If USPS didn’t scan your package, first wait 24–72 hours, then check the USPS tracking again and ask your local post office to look it up with the tracking number. If there’s still no movement after several days, file a missing mail search and contact USPS customer support at 1-800-ASK-USPS.

What to do next

  1. Double-check the tracking number. A typo can make it look like the package was never scanned.
  1. Wait a little longer. Tracking delays of 24–72 hours are common, and some packages do not update until later in the route.
  1. Ask the local post office. If you dropped it off there, staff may be able to see more than the public tracking page shows.
  1. File a missing mail search. This can sometimes prompt an update or help USPS locate the package.
  1. Escalate if it stays unscanned for several business days. At that point, it’s reasonable to treat it as a potential lost-mail issue.

If you’re the sender

If you sold something or mailed it for work, tell the buyer or recipient that tracking has not updated yet so they know it was handed off. In marketplace situations, people often mark it as shipped but not tracking and keep the other party informed while waiting for USPS to scan it.

When it may be lost

A package that never gets any scan after several days is not automatically lost, but it is more concerning than a normal tracking delay. If USPS still cannot locate it after your local post office check and missing mail search, the next step is usually a refund, reshipment, or claim depending on the shipment and your role in the transaction.

Practical tip

For future shipments, getting a receipt at the counter is the safest move because it proves USPS accepted the package. Drop-off scans can be missed, which is why some sellers prefer an acceptance scan or a handoff at the counter.

Tldr

USPS missing a scan is usually a delay, not proof the package is gone. Wait 24–72 hours, confirm the tracking number, contact the local post office, and file a missing mail search if it still does not update.