Peoria County, IL Shrink-Swell Risk

Shrink-swell potential in Peoria County, IL

Moderate

Soil across 70.9% of Peoria County, IL comes back "Moderate" in USDA's shrink-swell data, averaging 3.53% 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 Peoria County, IL - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Peoria County will actually do.

Peoria County: the real numbers

Peoria 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 Peoria County, IL compares

Among the 3,085 rated counties on this site, Peoria County, IL ranks 821 most-constrained nationally, and 58 of 101 within Illinois. The county spans 619 square miles, home to 179,630 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Summers County, WV and McCone County, MT 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 Wabash County, IL and Logan County, IL. The full underlying dataset is downloadable directly, one row per county.