Category: Shipping and Delivery Customer Service Information

The United States Postal Service, commonly called USPS, provides mail delivery, package shipping, PO Boxes, tracking, Click-N-Ship, Informed Delivery, forwarding, Hold Mail, stamps, shipping supplies, passport-related retail services at select locations, and business mailing services. Customers often contact USPS customer service for tracking, missing mail, delayed packages, lost packages, damaged mail, claims, refunds, change of address, mail forwarding, PO Box issues, Informed Delivery, online account problems, Postal Store orders, mail theft, scams, and delivery complaints.

If you are looking for the USPS customer service phone number, the main number is 1-800-ASK-USPS or 1-800-275-8777. USPS also provides separate support routes for tracking, technical support, Postal Store orders, shipping supplies, mail theft, fraud, suspicious mail, and Postal Inspection Service reports.

How to Contact USPS Customer Service

• USPS Customer Service Phone Number: 1-800-ASK-USPS or 1-800-275-8777
• USPS Customer Care Hours: Monday through Friday, 8:00 AM to 8:30 PM ET; Saturday, 8:00 AM to 6:00 PM ET
• USPS Tracking Support: 1-800-222-1811
• Tracking Support Hours: Monday through Friday, 8:00 AM to 8:30 PM ET; Saturday, 8:00 AM to 6:00 PM ET
• USPS.com Technical Support: 1-800-344-7779
• Technical Support Hours: Monday through Friday, 8:00 AM to 8:30 PM ET; Saturday, 8:00 AM to 6:00 PM ET
• Postal Store Stamps and Online Orders: 1-844-737-7826
• Postal Store Email: sfsdelivery.confirmation@usps.gov
• Free Shipping Supplies: 1-800-610-8734
• TTY / Relay Access: Dial 711 for your state’s Telecommunications Relay Service
• Mail Theft, Mail Fraud, Identity Theft, Suspicious Mail, or Postal Crime: U.S. Postal Inspection Service, 1-877-876-2455
• USPS Smishing or Suspicious Email/Text Reporting: Forward suspicious USPS-related texts or emails to spam@uspis.gov
• Forward Smishing Texts: Forward suspicious package-delivery texts to 7726
• USPS Contact Page: USPS Contact Us
• USPS Tracking: USPS Tracking
• Missing Mail Search: USPS Missing Mail and Lost Packages
• File a USPS Claim: USPS Domestic Claims
• Request a Refund: USPS Refunds
• Postal Inspection Service Reports: Report Mail Theft, Fraud, or Postal Crime
• Locate a Post Office: USPS Location Finder
• USPS Office of the Consumer Advocate: 475 L’Enfant Plaza SW, Room 4012, Washington, DC 20260-2200
• USPS Headquarters / General Postal Service Phone: 1-202-268-2000
• Website: usps.com

Important support note: USPS customer service representatives can help route many service issues, but the correct path depends on the problem. Tracking questions, Missing Mail searches, insured claims, refunds, PO Box issues, technical account problems, Postal Store orders, local delivery complaints, mail theft, and mail fraud each have different support routes.

Best Way to Reach USPS by Issue

• General USPS service issue: Call 1-800-275-8777 or use the USPS online contact form.
• Package tracking question: Check USPS Tracking first, then call 1-800-222-1811 if you need help with another package issue.
• Missing mail or delayed package: Check tracking, contact the local Post Office when appropriate, and submit a Missing Mail Search when eligible.
• Damaged package or missing contents: File an insured claim if the item was covered by insurance or an eligible USPS service.
• Priority Mail Express refund: Use the USPS refund process if the service guarantee applies.
• USPS.com technical issue: Call 1-800-344-7779 for Click-N-Ship, claims, PO Boxes, Postal Store, or USPS account problems.
• Postal Store stamps or merchandise order: Call 1-844-737-7826 or email sfsdelivery.confirmation@usps.gov.
• Free shipping supplies: Call 1-800-610-8734.
• Mail theft, mail fraud, identity theft, counterfeit postage, suspicious mail, or postal crime: Contact the U.S. Postal Inspection Service at 1-877-876-2455.
• Active crime, immediate danger, suspicious substance, or emergency: Call 911 first, then contact Postal Inspectors when safe.

What to Have Ready Before Contacting USPS

• Your USPS tracking number, label number, or receipt number
• The sender and recipient names and mailing addresses
• The mailing date and service used, such as Ground Advantage, Priority Mail, Priority Mail Express, Certified Mail, Registered Mail, or international mail
• Post Office location, ZIP Code, route, or delivery address involved
• Photos of damaged packaging, damaged contents, missing contents, or delivery location if relevant
• Proof of mailing, proof of insurance, proof of value, receipt, invoice, or Click-N-Ship label record
• Delivery scan, delivery photo, Informed Delivery notice, or carrier update if available
• Case number, Missing Mail Search request number, claim number, refund request number, or prior USPS response
• For mail theft or fraud, keep envelopes, labels, tracking, screenshots, suspicious texts, emails, phone numbers, and payment records
• For PO Box, Hold Mail, or Change of Address problems, have confirmation numbers and identity-verification details ready

Common USPS Customer Service Issues

Common reasons customers contact USPS include:

• Delayed mail, delayed packages, or tracking not updating
• Packages marked delivered but not received
• Lost packages, Missing Mail Search requests, and mail recovery questions
• Damaged packages, missing contents, and insured claims
• Refunds for Priority Mail Express, postage, shipping labels, or unused services
• Change of Address, mail forwarding, and address-verification issues
• USPS Hold Mail requests, vacation mail holds, and delivery-resume problems
• PO Box rentals, renewals, keys, access, and payment issues
• Click-N-Ship, USPS account, Informed Delivery, and online-form technical problems
• Postal Store stamp orders, supplies, and missing online merchandise orders
• International mail inquiries, customs delays, and international tracking
• Mail theft, package theft, mail fraud, identity theft, smishing texts, phishing emails, and counterfeit postage
• Local Post Office complaints, carrier issues, missed pickups, or delivery-route concerns

USPS Customer Reviews and Complaints on CSN

The live CustomerServiceNumbers.com USPS page currently shows zero customer reviews. Because there are no live CSN reviews yet, there is not enough CSN feedback to summarize a reliable USPS customer-service trend on this site.

If you have contacted USPS about tracking, missing mail, lost packages, damaged mail, claims, refunds, Informed Delivery, Change of Address, Hold Mail, PO Boxes, Postal Store orders, local delivery, mail theft, or a complaint, you can leave a review below. Reviews are individual experiences and may not represent every USPS route, local Post Office, package service, mail class, claim, refund, or support case.

USPS Tracking, Delayed Packages, and Missing Mail

Start by checking USPS Tracking. USPS says the tracking information available to customer service representatives is the same tracking information customers can see online, so calling may not provide a different scan if the package has not been updated yet.

If a package or mailpiece appears lost or delayed, USPS recommends checking the current status first, then submitting a Missing Mail Search request when eligible. Missing Mail Search requests can be submitted starting 7 days from the mailing date.

For a Missing Mail Search, gather the sender and recipient addresses, tracking number, mailing date, envelope or package type, contents description, and photos that may help USPS identify the item.

USPS Claims for Lost, Damaged, or Missing Contents

USPS claims are generally for insured mail or eligible services when a package is lost, damaged, or arrives with missing contents. USPS says either the sender or recipient may file a claim for insured mail, but the person filing must have the original mailing receipt and supporting documentation.

For damaged or missing contents, USPS recommends filing a claim immediately, but no later than 60 days from the mailing date. For lost mail, the filing start date and deadline depend on the service used.

Keep all packaging, damaged contents, photos, receipts, invoices, proof of value, proof of insurance, tracking records, and claim numbers until USPS resolves the claim. If a claim is denied or only partly paid, USPS may allow an appeal within the appeal window.

USPS Refunds, Priority Mail Express, and Postage Issues

USPS refunds are different from claims. A claim may involve insured value for lost or damaged mail, while a refund may involve postage, a service guarantee, unused labels, PO Box fees, or other USPS fees.

Priority Mail Express may be eligible for a refund if the service guarantee applies. Other postage or label refunds depend on the service, purchase method, timing, and whether the label or service was used.

Before requesting a refund, gather the tracking number, mailing receipt, label number, purchase date, payment method, service type, delivery scan, and the reason you believe a refund is due.

Change of Address, Hold Mail, PO Boxes, and Informed Delivery

For Change of Address issues, verify that you are using the official USPS Mover’s Guide or USPS.com. Be careful with third-party sites that charge extra fees or imitate USPS forms. Keep your confirmation code, old address, new address, move type, and start date.

USPS Hold Mail service can pause mail delivery for a minimum of 3 days and a maximum of 30 days. If your mail is not held or not delivered after the hold ends, contact USPS with your confirmation number and local Post Office details.

For PO Box issues, USPS.com account problems, and Informed Delivery support, use USPS.com tools or technical support. For Informed Delivery, USPS may route users through email support rather than general phone support.

Mail Theft, Mail Fraud, Counterfeit Postage, and Suspicious Mail

Mail theft, mail fraud, identity theft through the mail, counterfeit postage, suspicious mail, cybercrime involving the mail, and other mail-related crimes should be reported to the U.S. Postal Inspection Service. Call 1-877-876-2455 or use the USPIS report page.

If you see active mail theft, a carrier robbery, suspicious activity in progress, or a dangerous package, call 911 first. If medical attention is needed because of suspicious mail or a hazardous substance, call 911 immediately.

If you believe a USPS employee may be tampering with or stealing mail, USPIS may direct certain reports to the USPS Office of Inspector General. Keep photos, dates, tracking numbers, witness information, and any video or documentation.

USPS Text Scam, Phishing, and Fake Package Warning

Be careful with fake USPS texts, fake delivery notices, phishing emails, fake postage websites, counterfeit stamp ads, fake phone numbers, and package-redelivery fee scams. USPS-related smishing messages often claim a package cannot be delivered and ask you to click a link or pay a small fee.

• USPS says it will not send customers text messages or emails about a package unless the customer first requested tracking for that specific package.
• USPS tracking texts do not include links when sent through the official USPS text tracking service.
• Do not click suspicious package-delivery links or enter payment information on lookalike USPS websites.
• Forward suspicious USPS-related texts or emails to spam@uspis.gov.
• Forward suspicious smishing texts to 7726 to help report the scam phone number.
• If you entered payment or identity information on a suspicious site, contact your bank or card issuer immediately.
• Buy stamps from USPS or trusted authorized sellers. Deep-discount postage and stamp offers may be counterfeit.

Local Delivery Complaints and Escalation

Many USPS problems are local, such as missed pickups, route delays, mail delivered to the wrong address, repeated misdelivery, carrier-access issues, PO Box problems, and local Post Office service concerns. The local Post Office or local postmaster may be the best first escalation point for route-specific problems.

If the local office cannot resolve the issue, USPS customer care can create an electronic service record and route the problem to the appropriate local postal manager. For ongoing unresolved service issues, the Postal Regulatory Commission describes additional escalation through local District Consumer and Industry Affairs offices and the USPS Consumer Advocate.

How to Escalate a USPS Complaint

If USPS customer service does not resolve your issue, try these escalation steps:

1. Save your tracking number, receipt, claim number, Missing Mail Search number, refund request, photos, and all USPS responses.
2. Use the correct path: tracking support, Missing Mail Search, insurance claim, refund request, technical support, local Post Office, Postal Inspection Service, or Consumer Advocate.
3. For a delivery issue, contact the local Post Office or postmaster and ask for a service record or local investigation.
4. For a lost or delayed package, submit a Missing Mail Search when eligible and keep the confirmation email.
5. For damaged or insured mail, file a claim with proof of mailing, proof of insurance, proof of value, photos, and packaging.
6. For a denied claim, review the denial reason and file an appeal within the allowed appeal period if you have additional evidence.
7. For mail theft, mail fraud, identity theft, counterfeit postage, or suspicious mail, report the issue to USPIS at 1-877-876-2455.
8. For unresolved local service issues, ask USPS or the Postal Regulatory Commission resources about District Consumer and Industry Affairs contacts.
9. For final internal USPS complaint escalation, write to the USPS Consumer Advocate with copies of prior case numbers and documentation.

USPS Compared with Competitors

USPS competes with shipping, delivery, logistics, and courier services such as UPS, FedEx, DHL, Amazon delivery, OnTrac, LaserShip, regional carriers, local couriers, and freight providers. Customers comparing shipping options often look at price, delivery speed, reliability, tracking, insurance, claims handling, pickup options, rural delivery, PO Boxes, international service, package security, and how quickly customer service resolves problems.

Related Customer Service and Consumer Resources

• USPS Corporate Office Headquarters
• UPS Customer Service
• FedEx Customer Service
• DHL Customer Service
• Amazon Customer Service
• USCIS Customer Service
• HealthCare.gov Customer Service
• CSNDB.com Chat and Text Support Resources
• ChargeOnMyCard.com: Identify Unknown Credit Card Charges
• ThinkItIsAScam.com: Scam and Fraud Warning Guides
• ZeroStars.org: Read and Leave Company Reviews

Frequently Asked Questions About USPS Customer Service

What is the USPS customer service phone number?

The USPS customer service phone number is 1-800-ASK-USPS or 1-800-275-8777. USPS lists customer care hours as Monday through Friday, 8:00 AM to 8:30 PM ET, and Saturday, 8:00 AM to 6:00 PM ET.

What is the USPS tracking support phone number?

The USPS tracking support phone number is 1-800-222-1811. USPS notes that customer service representatives see the same tracking information available online, so check USPS Tracking first.

What is the USPS technical support phone number?

USPS technical support can be reached at 1-800-344-7779. This route helps with USPS.com tools such as Click-N-Ship, claims, PO Boxes, The Postal Store, and USPS account issues.

How do I start a USPS Missing Mail Search?

Go to the USPS Missing Mail page and submit a search request when eligible. USPS says Missing Mail Search requests can be submitted starting 7 days from the mailing date.

How do I file a USPS claim?

Use the USPS claims page if the item was insured or covered by an eligible service. You will need the tracking number, original mailing receipt, proof of insurance, proof of value, and photos or evidence if the item was damaged or missing contents.

How long do I have to file a USPS claim for damaged mail?

USPS says claims for damaged items or missing contents can be filed immediately but must be filed no later than 60 days from the mailing date. Lost-mail claim windows depend on the mail service used.

How do I report mail theft or mail fraud?

Report mail theft, mail fraud, identity theft through the mail, counterfeit postage, suspicious mail, or other postal crimes to the U.S. Postal Inspection Service at 1-877-876-2455 or through the USPIS report page.

How do I report a fake USPS text message?

Do not click the link. Forward suspicious USPS-related texts or emails to spam@uspis.gov. You can also forward smishing texts to 7726 to help report the scam phone number.

Where is USPS headquarters?

USPS headquarters is at 475 L’Enfant Plaza SW, Washington, DC 20260. The USPS Office of the Consumer Advocate is listed at 475 L’Enfant Plaza SW, Room 4012, Washington, DC 20260-2200. For ordinary service issues, start with USPS customer care, tracking support, the local Post Office, or the correct USPS online form.

Page Update Note

Updated June 2026: This page was refreshed with current USPS customer service routing for tracking, missing mail, claims, refunds, technical support, Informed Delivery, PO Boxes, Hold Mail, Change of Address, Postal Store orders, mail theft, fraud, smishing, counterfeit postage, local delivery complaints, and escalation.

Why Trust CustomerServiceNumbers.com?

CustomerServiceNumbers.com has helped consumers find customer service contact information, complaint resources, and company support routes since 2004. CSN focuses on practical contact guidance, customer reviews, and real-world escalation tips. When an organization publishes a real customer service phone number, CSN lists it with context so customers can decide whether to call, use online tracking, file a claim, submit a Missing Mail Search, report fraud, contact a local office, or escalate through another route.

Share Your USPS Customer Service Experience

Have you contacted USPS customer service about tracking, missing mail, lost packages, damaged mail, claims, refunds, Informed Delivery, Change of Address, Hold Mail, PO Boxes, Postal Store orders, delivery issues, mail theft, fraud, or a complaint? Share your experience below. Include the support route you used, how long it took to get help, and whether USPS resolved the issue. Do not post full tracking numbers, home addresses, phone numbers, email addresses, identity documents, payment details, claim documents, legal details, or private mail contents in public comments.

Customer Service Numbers Disclaimer

CustomerServiceNumbers.com is not affiliated with the United States Postal Service, USPS, the U.S. Postal Inspection Service, the USPS Office of Inspector General, the Postal Regulatory Commission, or any Post Office location. This page is provided for informational and consumer-feedback purposes only. Phone numbers, support hours, claim rules, refund rules, delivery practices, tracking information, fraud-reporting processes, mailing rules, and website links may change. Do not post private mail, identity, tracking, payment, legal, medical, financial, or address information in public comments. Always verify important tracking, claim, refund, legal, fraud, mail-theft, safety, and delivery information directly with USPS, USPIS, your local Post Office, or a qualified professional before taking action.