Monroe County, IL Shrink-Swell Risk

Shrink-swell potential in Monroe County, IL

Moderate

Soil across 63.3% of Monroe County, IL comes back "Moderate" in USDA's shrink-swell data, averaging 4.16% linear extensibility. A real but modest amount of movement - standard foundations usually hold up, but drainage and moisture control around the foundation still matter more than on low-risk soil.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Monroe County, IL - never a reading for one specific parcel. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Monroe County.

Monroe County: the real numbers

Monroe County's soil reading points toward standard foundation practice as the likely outcome, not the exception. A geotechnical report runs $1,000-$5,000, typically around $2,700. Foundation repair, if a specific lot turns out to differ from the county average, runs $5,000-$15,000.

How Monroe County, IL compares

Among the 3,085 rated counties on this site, Monroe County, IL ranks 493 most-constrained nationally, and 23 of 101 within Illinois. Monroe County, IL is 385 square miles with a population of 34,969.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Lamar County, GA and Douglas County, SD are worth a look for comparison.

How this reading is built, and its real limits · Moisture management: the cheap fix that works on any soil

Elsewhere in Illinois

Every county in Illinois is on this site, including Jackson County, IL and Adams County, IL. The full underlying dataset is downloadable directly, one row per county.