Is Jasper County, IN a radon risk area?

Jasper County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Rank it against the rest of the country and Jasper County lands in the 51st percentile for radon potential.

Jasper County by the numbers

About 33,387 people live in Jasper County, Indiana, spread over 559.68 square miles. Averaged across its land area, Jasper County runs about 60 people per square mile. Rank 457 by population within its EPA zone puts Jasper County at the 56th percentile among zone peers. Geologically, Jasper County is grouped into EPA Region 5 alongside 523 other counties that share its rock and soil setting.

What this actually means for a house in Jasper County

Jasper County's predicted average falls between EPA's 4 pCi/L action level and the national indoor average of about 1.3 pCi/L (outdoor air runs roughly 0.4 pCi/L). Nothing about a Zone 2 label lowers the case for testing in Jasper County — EPA recommends it in every zone, moderate included.

If Jasper County tests above the action level

Nothing about Jasper County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find Indiana's state radon program

Jasper County's test kit answers today; a Airthings radon monitor keeps answering for Jasper County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

More on how this number was built

Jasper County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.