Sinkhole risk in Coles County, IL: No soluble rock mapped

No soluble rock mapped

No soluble bedrock mapped.

On soluble rock: 0%
At or near the surface: 0%
Buried under cover: 0%

What this means before you buy

No soluble bedrock is mapped here, so natural sinkholes are unlikely. Collapses from broken pipes or old mines are a separate risk.

Across 508 square miles, under one square mile of Coles County maps onto soluble rock. With about 46,423 residents (91 per square mile), homes are spread across towns and farmland, and a mapped unit may or may not reach the developed parts. The figures come from 354 map points about 1.2 miles apart, so a pocket smaller than that can be missed or overstated.

Worth reading for this county: why gypsum and salt move faster than limestone, and how these percentages are measured.

Counties around Coles County

The nearest county rated sinkhole country is Monroe County, IN, about 94 miles east. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Cumberland County, IL 17 mi south · 0% at surface
Douglas County, IL 17 mi north · 0% at surface
Moultrie County, IL 23 mi west · 0% at surface
Clark County, IL 26 mi southeast · 0% at surface
Edgar County, IL 28 mi northeast · 0% at surface
Shelby County, IL 32 mi west · 0% at surface

Against the rest of Illinois

Coles County ranks 38 of 102 in Illinois for soluble rock at the surface, and sits above 0% of US counties on that measure.