Jersey County, IL Shrink-Swell Risk

Shrink-swell potential in Jersey County, IL

Moderate

Soil across 75.1% of Jersey County, IL comes back "Moderate" in USDA's shrink-swell data, averaging 3.69% linear extensibility. Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Jersey County, IL - never a reading for one specific parcel. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Jersey County: the real numbers

Jersey 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.

Where this sits nationally

Among the 3,085 rated counties on this site, Jersey County, IL ranks 728 most-constrained nationally, and 45 of 101 within Illinois. Jersey County, IL is 370 square miles with a population of 21,150.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Jones County, MS and Gallia County, OH 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 Livingston County, IL and Clinton County, IL. The full underlying dataset is downloadable directly, one row per county.