Henry County, MO Shrink-Swell Risk
What Henry County, MO's soil means for a foundation
Moderate
USDA's SSURGO data puts Henry County, MO's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 3.57% across 53.9% of the county's surveyed land. That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.
This is a county figure, not a lot figure
USDA's survey covers the whole of Henry County, MO at once, not any single address. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Henry County will actually do.
Report cost vs. repair cost
With Henry County, MO rating "Moderate", a geotechnical report is still worthwhile before a build, just less urgent than in a high-risk county. 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 Henry County, MO compares
Nationally, Henry County, MO is the 798-most-constrained of 3,085 rated counties for shrink-swell soil. Within Missouri alone it ranks 65 of 114. The county spans 697 square miles, home to 22,575 people.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. McHenry County, IL and Huntingdon County, PA 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
More of Missouri
Every county in Missouri is on this site, including Douglas County, MO and Lewis County, MO. The full underlying dataset is downloadable directly, one row per county.