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This is the "Zip Codes" page of the "Government Information: Census Data" guide.
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Government Information: Census Data   Tags: deomographics  

Last Updated: Aug 12, 2016 URL: http://csus.libguides.com/content.php?pid=219117 Print Guide RSS Updates

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Zip Code Statistics

ZIP Code Information The Census Bureau does not have maps or digital files showing the boundaries of U.S. Postal Service ZIP Codes. The fact that ZIP Codes aren't required to be polygons makes them difficult to map. They are networks of streets served by mail carriers or just individual post offices and are a tool for mail delivery. They also change periodically as required to meet Post Office operational needs. Various companies have created maps by interpolating boundaries between occurrences of ZIP Codes on the ground. However, this does not guarantee that the U.S. Postal Service delivery routes will follow this interpretation. http://www.census.gov/geo/www/tiger/tigermap.html#ZIP

 

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