Jackson County, CO Shrink-Swell Risk
Shrink-swell potential in Jackson County, CO
Low
Soil across 84% of Jackson County, CO comes back "Low" in USDA's shrink-swell data, averaging 1.97% 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 Jackson 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 Jackson County will actually do.
Jackson County: the real numbers
Jackson 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, Jackson County, CO ranks 2,013 most-constrained nationally, and 42 of 63 within Colorado. Jackson County, CO is 1,614 square miles with a population of 1,273.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Madison County, IL and Harford County, MD 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 Dolores County, CO and Pitkin County, CO. The full underlying dataset is downloadable directly, one row per county.