Jerome County, ID Shrink-Swell Risk
Shrink-swell potential in Jerome County, ID
Low
Soil across 73.1% of Jerome County, ID comes back "Low" in USDA's shrink-swell data, averaging 2.57% linear extensibility. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Jerome County, ID - 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 Jerome County.
Jerome County: the real numbers
Jerome 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.
How Jerome County, ID compares
Among the 3,085 rated counties on this site, Jerome County, ID ranks 1,499 most-constrained nationally, and 14 of 44 within Idaho. The county spans 598 square miles, home to 26,056 people.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Grand Isle County, VT and Unicoi County, TN 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 Idaho
Every county in Idaho is on this site, including Bannock County, ID and Butte County, ID. The full underlying dataset is downloadable directly, one row per county.