Holiday Deadlines · Find deadlines for shipping holiday gifts. ; Calculate a Price · Determine how much postage or how many stamps you need for your letter or package based on size, weight, and destination. ; Look Up a ZIP Code™ · Find a ZIP Code ™ by street address or city and state to make sure your mail arrives at the right place.
What does my tracking number look like? · Where do I find my tracking number? · How can I leave delivery instructions?
About Completing Customs Forms ; Do all shipments need a customs form? ; Can I complete a customs form at the Post Office? ; How can I print a shipping label and customs form?
Email Us · Use our online form to answer a few questions about your issue. Please provide as much detail as you can. ; Find a Post Office · Find the nearest USPS location by city and state or ZIP Code™ . Get contact information, hours, and more. ; Check Postal Holidays · Postal facilities are closed on federal holidays. See a list of all upcoming USPS holidays and events.
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Tracking number · Purchase receipt · Photo ID (if in person)
Mailing Tips ; Send to the Correct Address Check the IRS website for where to mail your tax return. Write both the destination and return addresses clearly or print your mailing label and postage. Where to Send Paper Tax Returns ; Meet the Postmark Deadline If your tax return is postmarked by the filing date deadline, the IRS considers it on time. Mail your return in a USPS® blue collection box or at a Postal location that has a pickup time before the deadline. Find USPS Locations
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Free Supplies 8, Shipping Price, Dimensions ; Flat Rate Envelope, $9.00 Commercial Pricing $10.45 at Post Office, 12 1/2″ x 9 1/2″ ; Window Flat Rate Envelope, $9.00 Commercial Pricing $10.45 at Post Office & Online, 10″ x 5″ 12 1/2″ x 9 1/2″ ; Small Flat Rate Envelope, $9.00 Commercial Pricing $10.45 at Post Office, 10″ x 6″ ; Padded Flat Rate Envelope, $9.80 Commercial Pricing $11.20 at Post Office, 12 1/2″ x 9 1/2″ ; Legal Flat Rate Envelope, $9.30 Commercial Pricing $10.75 at Post Office, 15″ x 9 1/2″ ; Small Flat Rate Box, $9.55 Commercial Pricing $11.00 at Post Office, Outside: 8 11/16″ x 5 7/16″ x 1 3/4″ Inside: 8 5/8″ x 5 3/8″ x 1 5/8″ ; Medium Flat Rate Box — 1 (top-loading), $16.85 Commercial Pricing $19.30 at Post Office, Outside: 11 1/4″ x 8 3/4″ x 6″ Inside: 11″ x 8 1/2″ x 5 1/2″ ; Medium Flat Rate Box — 2 (side-loading), $16.85 Commercial Pricing $19.30 at Post Office, Outside: 14″ x 12″ x 3 1/2″ Inside: 13 5/8″ x 11 7/8″ x 3 3/8″ ; Large Flat Rate Box, $23.05 Commercial Pricing $26.00 at Post Office, Outside: 12 1/4″ x 12 1/4″ x 6″ Inside: 12″ x 12″ x 5 1/2″ ; APO/FPO/DPO Flat Rate Box, $21.35 Commercial Pricing $24.25 at Post Office, Outside: 12 1/4″ x 12 1/4″ x 6″ Inside: 12″ x 12″ x 5 1/2″ ; Large Flat Rate Board Game Box, $23.05 Commercial Pricing $26.00 at Post Office, Outside: 24 1/16″ x 11 7/8″ x 3 1/8″ Inside: 23 11/16″ x 11 3/4″ x 3″ ; Prepaid Forever Priority Mail Flat Rate ® Packaging, From $10.45 at Post Office, Various Sizes Available