How to Find a ZIP Code With a Street Address
Before you put that business letter or birthday card in the mailbox, make sure you've included the recipient's five-digit ZIP code on the envelope. The U.S. Postal Service requests this information to help make sure that your mail is accurately sorted and delivered. ZIP codes, which have been in use since 1963, identify by number where a letter or package is being sent. The nine-number ZIP +4 code defines areas even more specifically. If you don't know a ZIP code, you can find it easily if you know the recipient's street address.
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Instructions
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Visit the U.S. Postal Service's ZIP Code Lookup page at http://zip4.usps.com. The page should open with the Search by Address tab already selected.
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Type the street address in the Address 1 box. If you don't know the house or building number, just type in the street name. If applicable, type the suite number, floor or apartment number in the Address 2 box.
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Type the city and state in the boxes provided. Click "Find State Abbreviation" if you need help with this information.
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Click "Submit." The ZIP code for the street address you entered will be displayed.
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Tips & Warnings
Including all nine numbers of the ZIP +4 code reduces the chance of delivery errors.
