Marion County, MS Shrink-Swell Risk

Marion County, MS's soil, for shrink-swell risk

Low

Marion County, MS: USDA's soil survey rates 92.9% of the county "Low" for shrink-swell potential (1.37% linear extensibility). 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.

What Marion County's reading doesn't cover

Two lots a mile apart in Marion County can carry different soil, even though they share one countywide reading. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Marion County.

What it costs to find out, versus to ignore it

With Marion County, MS rating "Low", 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 Marion County, MS compares

Nationally, Marion County, MS is the 2,641-most-constrained of 3,085 rated counties for shrink-swell soil. Within Mississippi alone it ranks 77 of 82. Marion County covers 542 square miles and counts 24,008 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Perry County, MS and Merced County, CA 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 Hinds County, MS and Calhoun County, MS. The full underlying dataset is downloadable directly, one row per county.