Allen County Soil Data
Allen County, Indiana
Avg pH
6.3
Texture
Fine sandy loam
Drainage
Well drained
Organic Matter
4.8%
Hydrologic Group
A
Data Story
About Soil in Allen County, Indiana
Versatile Alfisols of Allen County
Allen County is dominated by Alfisols and a fine sandy loam texture, which is highly valued for its versatility. The average pH of 6.26 is slightly more acidic than the national 6.5 median but remains within an ideal range for most crops. This profile supports a strong county soil score of 76.3.
Balanced Loam for Easy Working
With 33.0% sand and 42.9% silt, this soil offers a balanced texture that is easy to till and aerate. The 20.7% clay content provides necessary structure and nutrient-holding capacity. This specific mix facilitates healthy root growth and efficient drainage.
Rich Organic Content for Growth
The soil contains 4.79% organic matter, nearly reaching the state average and far exceeding the 2.0% national benchmark. While the 0.197 available water capacity is slightly below the state average of 0.202, the high organic content ensures great nutrient availability. This makes the land naturally productive for gardeners and farmers alike.
Excellent Drainage and Water Movement
This county features well-drained soils categorized under Hydrologic Group A, indicating superior water infiltration. These conditions are ideal for deep-rooted plants and reduce the risk of standing water after storms. It also makes the land more stable for building foundations compared to neighboring heavy-clay areas.
Zone 6a Gardeners: Start Planting
Zone 6a conditions allow for a long growing season for robust tomatoes, peppers, and leafy greens. The well-drained sandy loam is a dream for home gardeners who want easy workability. Get your seeds in the ground and take advantage of this fertile Allen County earth.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Group A — Low Runoff
Sandy, well-drained soils with high infiltration rates. Water moves quickly through the soil profile. Lowest runoff potential when thoroughly wetted.
Drainage Class
Well drained
Water is removed from the soil readily but not rapidly. Optimal for most plants and construction.
Soil Profile
Dominant texture: Fine sandy loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Allen County have?
Allen County's soil is classified as Fine sandy loam. This indicates the relative proportions of sand, silt, and clay — 33% sand, 43% silt, and 21% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Allen County's soil acidic or alkaline?
Allen County's soil has a pH of 6.3, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Allen County?
Allen County has a dominant drainage class of "Well drained." Well-drained soils allow excess water to move through quickly, reducing waterlogging risk and supporting most field and garden crops.
What crops or plants grow well in Allen County's soil?
Based on Allen County's Fine sandy loam texture, pH of 6.3, and Well drained, the soil is well suited for vegetables, grains, and most field crops, row crops and vegetable gardens, most annual and perennial crops.
What USDA soil order is found in Allen County?
Allen County's dominant soil order is Alfisols. Alfisols are moderate to high base-status soils with a clay-enriched subsoil. They support productive forests and cropland across temperate regions.
Planning your lawn? View lawn care data for Allen County on LawnByCounty.com →
Other Counties in Indiana
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.