Humphreys County, MS Shrink-Swell Risk

Shrink-swell potential in Humphreys County, MS

Very High

Soil across 62.3% of Humphreys County, MS comes back "Very High" in USDA's shrink-swell data, averaging 11.5% linear extensibility. This is the reading most likely to explain cracking a homeowner is already seeing. An engineered foundation design, not a conventional footing, is the realistic expectation for new construction.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Humphreys County, MS - 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 Humphreys County will actually do.

Humphreys County: the real numbers

With Humphreys County, MS rating "Very High", the gap between finding out early and finding out late is the whole decision. A geotechnical report runs $1,000-$5,000 (typically $2,700); an actual foundation repair, once cracking sets in, typically runs $5,000-$15,000 (around $10,000 typical) - roughly 4x the report.

Where this sits nationally

Among the 3,085 rated counties on this site, Humphreys County, MS ranks 15 most-constrained nationally, and 4 of 82 within Mississippi. The county spans 419 square miles, home to 7,121 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Edgecombe County, NC and Wabash County, IL are worth a look for comparison.

How this reading is built, and its real limits · The warning signs of expansive-clay damage, explained

Elsewhere in Mississippi

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