Sinkhole risk in Terry County, TX: Not karst, but voids possible

Not karst, but voids possible

No soluble bedrock; some pseudokarst (piping or lava-tube ground).

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

What this means before you buy

Not true karst, but soil piping or lava tubes can still open voids - mention it to an inspector.

Across 889 square miles, under one square mile of Terry County maps onto soluble rock. With about 11,602 residents (13 per square mile), much of the land is open, and the mapped rock may sit far from where people actually live. The figures come from 396 map points about 1.5 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 ground with no limestone still opens up.

Counties around Terry County

The nearest county rated sinkhole country is Kent County, TX, about 91 miles east. 4 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.

Yoakum County, TX 29 mi west · 0% at surface
Hockley County, TX 30 mi north · under 1% at surface
Lynn County, TX 30 mi east · 1% at surface
Gaines County, TX 34 mi southwest · 0% at surface
Dawson County, TX 37 mi southeast · 3% at surface
Cochran County, TX 41 mi northwest · 0% at surface

Against the rest of Texas

Terry County ranks 238 of 254 in Texas for soluble rock at the surface, and sits above 0% of US counties on that measure.