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The USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which perennial plants are most likely to thrive at a location. The map is based on the average annual extreme minimum winter temperature, displayed as 10-degree F zones and 5-degree F half zones.
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The USDA Plant Hardiness Zone Map website includes an interactive-GIS map that allows the viewer to “click” down in scale to one-half mile. It also includes national, state and regional images in a variety of resolutions, and a ZIP code finder that provides the plant hardiness zone for all U.S. ZIP codes.
Find Your Plant Hardiness Zone. Enter your ZIP code in the search box in the upper-left of the map to find your location and the Plant Hardiness Zone Map. Click the map at your location of interest to see the Zone classification at that location. View Your State Map
The USDA Hardiness Zone Map divides North America into 11 separate planting zones; each growing zone is 10°F warmer (or colder) in an average winter than the adjacent zone. If you see a hardiness zone in a gardening catalog or plant description, chances are it refers to this USDA map.
According to the 2023 USDA Hardiness Zone Map Chicago, Illinois is in Zones 6a (-10°F to -5°F), 6a (-10°F to -5°F) and 6b (-5°F to 0°F).
ZIP Code 60608 - Chicago Illinois is in 2023 USDA Hardiness Zones 6a (-10°F to -5°F) and 6b (-5°F to 0°F)
Find the 2012 and 2023 USDA Hardiness Zone for your ZIP Code and Display a Map.