Zipcodes

Hello, We use USPS ZIP Codes. The data actually comes mostly from the Bureau of Census County Business Patterns (CBP). You can find [url=http://www.implan.com/index.php?option=com_content&view=article&id=306&Itemid=1797 ]more information here[/url]. Also, there are instances where some USPS ZIP Codes that aren't in the IMPLAN dataset. Please see [url=http://www.implan.com/index.php?option=com_content&view=article&id=307&Itemid=1797#zip-codes-not-represented]more info here[/url]. Our raw data usually are collected and reported according to ZCTAs, which generally map 1:1, but not always perfectly, with USPS zip codes. Sometimes, though, the data are reported by a zip code that might be for a particular PO box, which isn't really a ZCTA, but there are data for the po box, and we usually find the county-mapping for that po box according to USPS. Please let us know if you have additional questions. IMPLAN Group Staff