Sheridan County, NE radon potential

EPA's own radon map rates Sheridan County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. That puts Sheridan County in the 36th percentile nationally for radon potential — higher than 36% of the counties EPA has rated.

How Sheridan County compares

Sheridan County, Nebraska is home to about 4,927 people across 2,440.17 square miles. That works out to roughly 2 people per square mile. Within its own EPA zone, Sheridan County is bigger by population than 8% of the counties that share it. EPA's geology-based Region 7 groups Sheridan County with 411 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Sheridan County's Zone 2 prediction. Middle-of-the-pack doesn't mean risk-free for any one Sheridan County address — a moderate county average still leaves individual homes to test either side of it.

Next steps for a home in Sheridan County

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Nebraska's state radon program

For Sheridan County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Sheridan County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

Where Sheridan County's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.