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  • US Zipcodes
  • Non-US Postal Codes
  • Zipcode Formats

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  1. Data Catalogs

Zip + Post codes

What are some interesting input tests for zipcodes?

US Zipcodes

  • 00501

    • Lowest ZIP

    • Holtsville, NY

    • Also detects fields that might truncate leading zeros

  • 99950

    • Highest ZIP

    • Ketchikan, AK

  • 06390

    • NY ZIP that Belongs in Connecticut?

    • Fishers Island, NY.

  • 12345

    • General Electric’s Unique ZIP

    • Schenectady, NY.

  • 20252

    • Smokey Bear’s Personal ZIP

    • Washington, DC.

  • 22313

    • P.O. box only ZIP

    • Alexandria, Virginia.

  • 99530-9998

    • ZIP for Santa Claus in the north pole.

    • Anchorage, AK.

Non-US Postal Codes

  • H0H 0H0

    • Post Code for North Pole

    • North Pole, Canada

  • LL61 5QH

    • Post Code for Llanfair­pwllgwyngyll­gogery­chwyrn­drobwll­llan­tysilio­gogo­goch

    • Sometimes abbreviated to Llanfairpwllgwyngyll

    • Wales, UK

Zipcode Formats

  • 5 digits (ZIP)

    • 99530

  • 9 digits (ZIP + 4)

    • 995309998

  • 10 digits (ZIP + "-" + 4)

    • 99530-9998

PreviousStringsNextError Catalogs

Last updated 4 years ago

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