Phillips County, CO Shrink-Swell Risk
Shrink-swell potential in Phillips County, CO
Low
Soil across 62.1% of Phillips County, CO comes back "Low" in USDA's shrink-swell data, averaging 2.97% 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 Phillips County, CO - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Phillips County will actually do.
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.
Phillips County's rank among Colorado counties
Among the 3,085 rated counties on this site, Phillips County, CO ranks 1,216 most-constrained nationally, and 9 of 63 within Colorado. Phillips County covers 688 square miles and counts 4,488 residents.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Lincoln County, WA and Cottonwood County, MN 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 Colorado
Every county in Colorado is on this site, including Denver County, CO and Clear Creek County, CO. The full underlying dataset is downloadable directly, one row per county.