Mail tracking, lost packages, Informed Delivery and PO Boxes
USPS's main customer service line is 1-800-275-8777 - 1-800-ASK-USPS. The line handles mail tracking, lost packages, Informed Delivery, PO Boxes, mail forwarding, hold-mail requests, and stamp / postage purchases. USPS does not run 24/7 phone support; online tools are always available.
Call USPS when a package is missing or marked delivered but not received, when tracking shows no movement for 7+ days, when you need to file a missing-mail search, when Informed Delivery isn't showing your mail, when you need to extend or change mail forwarding, or when you have PO Box renewal or access issues.
| Channel | Details |
|---|---|
| Phone | 1-800-275-8777 (Monday-Friday 8 a.m. to 8:30 p.m. ET, Saturday 8 a.m. to 6 p.m. ET) |
| USPS Help Center | usps.com/help - searchable knowledge base. |
| Email Customer Service | Contact form at usps.com/help/contact-us - response within 1-3 business days. |
| Twitter / X | @USPSHelp handles DMs Monday-Saturday. |
| Local Post Office | Find at usps.com/locator - in-person help with packages and PO Boxes. |
| Missing Mail Search | missingmail.usps.com - structured search request when phone fails. |
If you have ever waited 20 minutes in an automated phone tree, you know how frustrating it is to get a real human on the line. Here is the fastest path to a live agent at USPS:
Hold times at the USPS 1-800 customer care helpline are shortest early in the morning (between 7 a.m. and 9 a.m. local time) and on Tuesday or Wednesday. Mondays and Friday afternoons see the longest wait times. Sunday and holiday hours are sometimes reduced - if you call on Christmas, Thanksgiving, or New Year's Day, expect either reduced staffing or a callback queue. Off-peak hours can cut your wait from 25 minutes down to under 5.
If a frontline USPS agent cannot resolve your issue, ask politely to escalate to a supervisor or to the executive customer service team (sometimes called the executive resolution team or office of the president). Most major U.S. brands have a dedicated executive escalation line accessible only by request - persistent, polite callers usually get connected within 5-10 minutes. For written escalation, send a complaint email to the address listed in the brand's official corporate contact directory; certified-mail follow-up improves response rates significantly.
If you call to cancel a USPS subscription or service, the IVR menu often routes you to a separate retention department whose agents have authority to offer discounts, fee waivers, and bonus credits that standard support cannot. To reach retention, press the option for "cancel" or "close account". Many customers report saving 30-50% on annual fees just by mentioning they're considering cancellation.
Not everyone wants to speak on the phone. USPS also accepts contact through several digital channels - live chat, email, social media support handles, and an in-app help section. The contact-options table above lists every official method. For complaints or formal feedback, the brand's online help center is usually the fastest written record of your case.
The contact phone number on this page is for USPS consumer customer service - not the corporate office. Most large U.S. brands list a separate corporate phone for media, investor relations, and legal correspondence on the "Contact" or "Investor Relations" section of their main website. If you need to file a written complaint or send a formal letter, that page is where you will find the headquarters mailing address.
Here are quick answers to the most frequently asked questions about reaching USPS customer support, taken straight from real reader queries:
Press 0 repeatedly when the IVR (interactive voice response) starts, or say "agent", "representative", or "customer service". If the system asks for an account number, stay silent or press 0 twice more - USPS's automated menu typically routes you to a live consumer-help agent after two or three failed inputs. This works on every major U.S. customer care helpline, including 1-800-275-8777.
Yes - the USPS number 1-800-275-8777 is a toll-free 1-800 / 1-888 / 1-866 line for callers within the United States. Standard mobile-carrier minutes may apply if you are on a metered plan. International callers may pay long-distance charges; check the brand's official contact page for country-specific helplines.
Have these ready to speed up the call: your account email or username, the order number or transaction ID, the device serial number (for tech support cases), and the last four digits of any payment method on file. USPS customer care agents use one of these to authenticate you - having them ready saves 5-10 minutes versus searching mid-call.
Politely ask the frontline agent to escalate to a supervisor or to the executive customer service team. If that still does not resolve it, file a written complaint to the brand's executive contact email or use the BBB (Better Business Bureau) and your state Attorney General consumer-protection portal. Most U.S. brands respond within 7-10 business days to escalated complaints.
People search for USPS's customer service in dozens of different ways. Whether you typed in "USPS phone number", "USPS customer care number USA", "how to call USPS", "USPS toll free helpline United States", "USPS 1-800 number", "USPS tech support number", "USPS help desk", "USPS 24 hour support", "USPS live agent", "speak to a real person at USPS", "get help with USPS", or "USPS customer service near me", the verified contact details on this page are the same: the official toll-free number listed at the top, plus the alternate channels in the contact-options table.
Looking for a fax number? USPS no longer publishes a public consumer fax number for customer service - the company prefers email, secure messaging, and phone for record-keeping. If you need to send a formal written notice, use the corporate mailing address listed on USPS's official Investor Relations or Legal page.
USPS's official customer service number is 1-800-275-8777 (1-800-ASK-USPS).
USPS asks you to wait at least 7 business days from the last tracking update for domestic shipments, 21 days for international, before filing a Missing Mail Search.
Yes for insured shipments (Priority, Express, USPS-insured). For uninsured first-class mail, refunds are limited to the postage paid.
Sign up for Informed Delivery (informeddelivery.usps.com) - it photographs incoming mail and tracks packages by your address.
Common causes: weather delays, customs (international), regional sorting facility backlogs. Check the tracking page; if no update in 7+ days, file Missing Mail Search.
Step-by-step tutorials for the most common Usps customer service tasks - written by our editorial team and updated April 2026:
Looking for a different brand? These DialHelpUSA pages are visited most by people who also call USPS: