Starke County, IN radon potential

EPA's own radon map rates Starke County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. That puts Starke County in the 48th percentile nationally for radon potential — higher than 48% of the counties EPA has rated.

Where Starke County sits nationally

Starke County, Indiana is home to about 23,463 people across 309.144 square miles. Population density there runs about 76 people per square mile. Within its own EPA zone, Starke County is bigger by population than 45% of the counties that share it. Geologically, Starke County is grouped into EPA Region 5 alongside 523 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

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 Starke County's Zone 2 prediction. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Starke County — testing is the only way to know an individual home's actual level.

Next steps for a home in Starke 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 Indiana's state radon program

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

Where Starke County's figures come from

Starke County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.