Pair US zip codes with the correct USDA hardiness zone

Data comes in a single table which can be easily imported and linked by zip code to your existing geocode database. Great for building your own hardiness zone look-up or dynamic map application.

Data features:

  • Available in Excel & CSV format
  • 48,283 48,743 unique US Zip Codes with matching USDA Hardiness Zone pairs
  • Includes current zip codes for all 50 states
  • Does not include zip codes to military zones outside the US, commonwealths, or outlying islands.
  • Last Updated January 2011

Accuracy of Data

The USDA originally compiled this data in 1990. Since this time, the US Postal service has added several hundred new zip codes. For the newer zip codes, I have extrapolated the zone from the nearest 1990 zip code. The data contained in the 'distance' column is the extrapolation error (in miles). This should allow you to judge for yourself whether or not a particular zip / zone pair satisfies the requirements of your application.

Sample Data

Format Download
CSV Sample.csv
Excel Sample.xlsx

Purchase & Delivery

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