Alcorn County, MS Shrink-Swell Risk

Alcorn County's SSURGO shrink-swell reading

Low

In Alcorn County, MS, 95.2% of the surveyed soil carries a "Low" shrink-swell rating, 1.69% linear extensibility on average. That's the easiest starting point on this site's scale - a standard foundation is the reasonable default here, though any one lot can still differ.

Before you rely on this for one address

Alcorn County's reading is an average across the whole county, not a promise about any one lot inside it. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Budgeting for Alcorn County, MS

Alcorn 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 Alcorn County, MS compares

Among the 3,085 rated counties on this site, Alcorn County, MS ranks 2,290 most-constrained nationally, and 63 of 82 within Mississippi. Alcorn County covers 400 square miles and counts 34,228 residents.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Warren County, NC and Marshall County, OK 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 Mississippi

Every county in Mississippi is on this site, including Smith County, MS and Sharkey County, MS. The full underlying dataset is downloadable directly, one row per county.