Kemper County, MS Shrink-Swell Risk
Kemper County, MS's soil, for shrink-swell risk
Moderate
Kemper County, MS: USDA's soil survey rates 57.6% of the county "Moderate" for shrink-swell potential (3.25% linear extensibility). Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.
What Kemper County's reading doesn't cover
Two lots a mile apart in Kemper County can carry different soil, even though they share one countywide reading. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Kemper County will actually do.
What it costs to find out, versus to ignore it
With Kemper County, MS 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.
Where this sits nationally
Nationally, Kemper County, MS is the 1,017-most-constrained of 3,085 rated counties for shrink-swell soil. Within Mississippi alone it ranks 27 of 82. Kemper County, MS is 766 square miles with a population of 8,562.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Alleghany County, VA and Sandoval County, NM 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 Mississippi
Every county in Mississippi is on this site, including Washington County, MS and Benton County, MS. The full underlying dataset is downloadable directly, one row per county.