Madison County, MS Shrink-Swell Risk

Shrink-swell potential in Madison County, MS

Low

Soil across 98.5% of Madison County, MS comes back "Low" in USDA's shrink-swell data, averaging 1.49% linear extensibility. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Madison County, MS - 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).

Madison County: the real numbers

Madison 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 Madison County, MS compares

Among the 3,085 rated counties on this site, Madison County, MS ranks 2,514 most-constrained nationally, and 72 of 82 within Mississippi. Madison County, MS is 714 square miles with a population of 114,247.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Gosper County, NE and Sarasota County, FL 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 Covington County, MS and Tippah County, MS. The full underlying dataset is downloadable directly, one row per county.