Posey County, IN Shrink-Swell Risk
Shrink-swell potential in Posey County, IN
Low
Soil across 65.7% of Posey County, IN comes back "Low" in USDA's shrink-swell data, averaging 2.67% linear extensibility. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Posey County, IN - never a reading for one specific parcel. 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 Posey County.
Posey County: the real numbers
Posey 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.
Posey County's rank among Indiana counties
Among the 3,085 rated counties on this site, Posey County, IN ranks 1,437 most-constrained nationally, and 59 of 90 within Indiana. Posey County, IN is 409 square miles with a population of 25,067.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Dutchess County, NY and Cole County, MO 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 Indiana
Every county in Indiana is on this site, including Cass County, IN and Marion County, IN. The full underlying dataset is downloadable directly, one row per county.