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Tips & Tools: Post Office™ Tools

USPS® tools to help you in your mailing and shipping. Each of these links will take you directly to the USPS website.

  • Business Rate Calculator

    • Determine rates for Standard Mail, Presorted First-Class Mail® and other special mail classes.

  • International Rate Calculator

    • Determine rate and customs requirements for your letter or package depending on the country.

  • ZIP Code™ Look-up

    • Find the Zip+4 Code for any mailing address.

  • Post Office™ Locator

    • Find your nearest Post Office location.

  • Hold Mail Form

    • Download and complete this form when you plan to be away.



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