Mills County, TX Shrink-Swell Risk

Shrink-swell potential in Mills County, TX

Moderate

Soil across 45.1% of Mills County, TX comes back "Moderate" in USDA's shrink-swell data, averaging 4.22% linear extensibility. A real but modest amount of movement - standard foundations usually hold up, but drainage and moisture control around the foundation still matter more than on low-risk soil.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Mills County, TX - 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 Mills County will actually do.

Mills County: the real numbers

Mills 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, Mills County, TX ranks 466 most-constrained nationally, and 109 of 253 within Texas. Mills County covers 748 square miles and counts 4,563 residents.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Box Elder County, UT and Sutton County, TX 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 Texas

Every county in Texas is on this site, including Martin County, TX and Webb County, TX. The full underlying dataset is downloadable directly, one row per county.