Phillips County, KS Shrink-Swell Risk
Shrink-swell potential in Phillips County, KS
Low
Soil across 64.7% of Phillips County, KS comes back "Low" in USDA's shrink-swell data, averaging 2.61% 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 this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Phillips County, KS - 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 Phillips County.
Phillips County: the real numbers
Phillips 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.
Where this sits nationally
Among the 3,085 rated counties on this site, Phillips County, KS ranks 1,473 most-constrained nationally, and 90 of 105 within Kansas. Phillips County, KS is 886 square miles with a population of 4,733.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Medina County, TX and Clallam County, WA 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 Kansas
Every county in Kansas is on this site, including Lincoln County, KS and Grant County, KS. The full underlying dataset is downloadable directly, one row per county.