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Soil Types in Cook County, Illinois

Cook County has 165 zip codes in our database. Explore the soil types, hardiness zones, and gardening tips for this county.

Soil Type Distribution

Clay Loam 100%

Hardiness Zones

Cook County spans USDA zones 5b through 6b.

5b 6a 6b

Top Cities in Cook County

Soil Types in Cook County

Cook County in Illinois has 165 zip codes in our database. The most common soil type is Clay Loam, found in 100% of the county. Understanding your local soil helps you choose the right plants and amendments for your garden.

Hardiness Zones in Cook County

Cook County spans USDA hardiness zones 5b through 6b. Your hardiness zone determines which perennial plants will survive winter in your area. Enter your zip code above to find your exact zone and get personalized planting recommendations.

Browse Zip Codes in Cook County