DeKalb County Soil Data
DeKalb County, Illinois
Avg pH
6.5
Texture
Silt Loam
Drainage
N/A
Organic Matter
3.9%
Hydrologic Group
N/A
Data Story
About Soil in DeKalb County, Illinois
Highly productive neutral soils
DeKalb County boasts a 6.48 pH, resting almost exactly on the 6.5 national median. This balanced chemistry is a key factor in the county's reputation for agricultural excellence.
Silky texture with high clay
The soil mix is 65.2% silt and 22.0% clay, with a low 11.3% sand component. This fine-grained profile excels at storing nutrients and providing a cool, moist environment for deep roots.
Superior fertility and water storage
Organic matter is a standout at 3.87%, far exceeding the 2.94% state average. The available water capacity of 0.221 in/in is also significantly higher than the Illinois norm, providing a buffer against drought.
Excellent hydration and moisture management
Although specific drainage classes are missing from this data, the high water capacity suggests excellent absorption. The heavy silt and clay content means this land stays productive even during dry spells.
Elite soil for Zone 5b
Despite the shorter Zone 5b season, DeKalb's 85.8 soil score is among the best in the state. This premium earth is ideal for robust vegetable gardens and high-yield agriculture.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Hydrologic group data not available.
Drainage Class
Drainage class data not available.
Soil Profile
Dominant texture: Silt Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does DeKalb County have?
DeKalb County's soil is classified as Silt Loam. This indicates the relative proportions of sand, silt, and clay — 11% sand, 65% silt, and 22% clay. Loamy soils hold moisture well and support a wide range of plants.
Is DeKalb County's soil acidic or alkaline?
DeKalb County's soil has a pH of 6.5, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for DeKalb County?
Drainage class data is not currently available for DeKalb County.
What crops or plants grow well in DeKalb County's soil?
Based on DeKalb County's Silt Loam texture, pH of 6.5, and drainage class, the soil is well suited for vegetables, grains, and most field crops, row crops and vegetable gardens.
What USDA soil order is found in DeKalb County?
The dominant USDA soil order for DeKalb County is not currently available in our dataset.
Planning your lawn? View lawn care data for DeKalb County on LawnByCounty.com →
Other Counties in Illinois
Soil data sourced from USDA SSURGO via Soil Data Access. Data is informational only and should not be used as a substitute for on-site soil testing. Contact your local NRCS office for site-specific soil information.