USPS Customer Service

For International inquiries, for the Universal Postal Union (UPU), if your inquiry pertains to the status of an article mailed from a USPS tracking to an address outside of the US, you must contact the US sender and ask them to initiate an inquiry with the USPS tracking by just calling 1-800-222-1811.

Get the Tracking Number : USPS Tracking

Click here, to get the zipcodes by country.

Technical Support

The USPS tracking Technical Support team will help you when a website application or form doesn’t work properly. If you have problem using these applications, please give us a call.

Hours of Operation

Monday – Friday 8 AM – 8:30 PM ET
Saturday 8 AM – 6 PM ET

Informed Delivery Support

If you need help with your Informed Delivery service, please email Informed Delivery User Support.

You can change of address using state, city or country through local post office.

Customer Care Center

  • Email: USPS® Customer Service
  • Call: 1-800-ASK-USPS® (1-800-275-8777)
  • TDD/TTY Relay: Call 1-800-877-8339. Ask for 1-800-275-8777
USPS Customer Service
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