Marion County, IN Shrink-Swell Risk

Shrink-swell potential in Marion County, IN

Low

Soil across 59% of Marion County, IN comes back "Low" in USDA's shrink-swell data, averaging 2.97% 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 Marion County, IN - never a reading for one specific parcel. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Marion County: the real numbers

Marion 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 Marion County, IN compares

Among the 3,085 rated counties on this site, Marion County, IN ranks 1,212 most-constrained nationally, and 43 of 90 within Indiana. Marion County, IN is 396 square miles with a population of 981,628.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Gooding County, ID and Roscommon County, MI 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 Indiana

Every county in Indiana is on this site, including Pike County, IN and Knox County, IN. The full underlying dataset is downloadable directly, one row per county.