USDA Plant Hardiness Zones By ZIP Code

Overview

This data set provides the USDA Plant Hardiness Zone for each US Postal Service ZIP Code. It covers the entire United States and territories. Updated monthly.

Last updated May 1, 2024. The record count is 40,998.

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Dataset

This data is provided in 3 formats: CSV, JSON, and XML

All formats provide 3 data points:

  • ZipCode: 5 digit ZIP Code
  • Zone: USDA Plant Hardiness Zone name. Possible values:
    • 1a
    • 1b
    • 2a
    • 2b
    • 3a
    • 3b
    • 4a
    • 4b
    • 5a
    • 5b
    • 6a
    • 6b
    • 7a
    • 7b
    • 8a
    • 8b
    • 9a
    • 9b
    • 10a
    • 10b
    • 11a
    • 11b
    • 12a
    • 12b
    • 13a
    • 13b
  • MinTempRange: the average annual extreme minimum temperature. Possible values:
    • < -55
    • -55 to -50
    • -50 to -45
    • -45 to -40
    • -35 to -40
    • -30 to -35
    • -25 to -30
    • -20 to -25
    • -15 to -20
    • -10 to -15
    • -5 to -10
    • 0 to -5
    • 0 to 5
    • 5 to 10
    • 10 to 15
    • 15 to 20
    • 20 to 25
    • 25 to 30
    • 30 to 35
    • 35 to 40
    • 40 to 45
    • 45 to 50
    • 50 to 55
    • 55 to 60
    • 60 to 65
    • > 65

Excluded ZIP Codes

Excludes APO, DPO, FPO, and PARCEL RETURN SERVICE ZIP codes because they are non-geographic.