ZIP Code Directory
Avoid wasted postage and ensure timely receipt of all your outbound mail and overnight deliveries.

The National Information Data Center (NIDC) has published the National ZIP Code® Directory for over 30 years. Now, it’s the only printed version of ZIP Code® directory available. Using data licensed directly from the USPS, our two-volume set features the most complete, up-to-date ZIP information available.

Just Added! Official US Census Bureau State and County Demographic and Economic Profiles. Now you can get quick, easy access to facts about people, business, and geography for the states that you do business in and how it compares to the overall US population.

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ZIP Code CD-ROM
Save even more valuable time and get complete accuracy

Get quick, instant, electronic access to accurate zip codes, counties, area codes, cities, and states with the single-user version of the National ZIP Code® Directory on CD-ROM.

Get all the benefits and features of the single-user version for your entire company

Now it is even easier for you and every member of your team to have quick, instant, electronic access to accurate ZIP Codes® counties, area codes, cities, and states with our National ZIP Code® Directory CD-ROM network user version. There are absolutely no user restrictions with our network version.

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Maps & Other Products
Be even more efficient with one of our ancillary products.

You may just need information specific to your state or the new postal rates. Whatever your need we have the most current and update-to date product available in the form of wall charts, directories, guides and other quick reference tools.

  • Individual 5-digit State ZIP Code® Directories

  • National Telephone Area Code Directory and Map set

  • National 3-Digit-Zip Code Dir/Map Directory

  • Postal Rate and Fee Finder Wall Chart
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