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The ZIP Code system is extremely important in the processing and delivery of mail. An envelope that does not include a ZIP Code in the delivery address must be manually sorted, which increases the cost of sorting the mail and causes mail to be delayed en route to the delivery address.
Use the online ZIP Code Lookup to find a ZIP Code.
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ZIP Code Lookup - Locate a specific ZIP Code number, all ZIP Code numbers in a city or all cities in a ZIP Code. |
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ZIP Code FAQs - Frequently asked questions regarding ZIP Code numbers. |
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AIS Viewer - An interactive DVD designed to provide the ability to retrieve, view, and print accurate and current ZIP Code information for all 50 states on demand. |
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