Is LaPorte County, IN a radon risk area?

LaPorte 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. Nationally, LaPorte County ranks higher in radon potential than 60% of rated counties (the 60th percentile).

LaPorte County by the numbers

About 111,348 people live in LaPorte County, Indiana, spread over 598.288 square miles. Averaged across its land area, LaPorte County runs about 186 people per square mile. Rank 180 by population within its EPA zone puts LaPorte County at the 83rd percentile among zone peers. EPA's geology-based Region 5 groups LaPorte County with 523 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in LaPorte County

EPA's Zone 2 rating for LaPorte County sits below its own 4 pCi/L action level but above the national indoor average of about 1.3 pCi/L. LaPorte County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

Next steps for a home in LaPorte County

Nothing about LaPorte 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

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

More on how this number was built

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.