Get the raw data now. This is the actual data from the U.S. Postal Service, but for a tiny fraction of the cost. Includes data in the following formats: Excel format (.xls) Text file (.csv) Includes the following fields: Zip Code Latitude Longitude County City State Time Zone Also includes an easy-to-follow instructive document, "Calculating Distance," which precisely describes the calculations and methodology behind calculating the distance between zip codes.
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