What EPA's radon map says about Racine County

EPA's own radon map rates Racine County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Rank it against the rest of the country and Racine County lands in the 62nd percentile for radon potential.

How Racine County compares

About 198,651 people live in Racine County, Wisconsin, spread over 332.614 square miles. Population density there runs about 597 people per square mile. Among counties sharing Racine County's EPA zone, it outranks 88% of them by population. Geologically, Racine 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 Racine County's Zone 2 prediction. Nothing about a Zone 2 label lowers the case for testing in Racine County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Racine County

Mitigation cost doesn't depend on Racine County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Wisconsin's state radon program

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

More on how this number was built

The methodology guide shows exactly which EPA and Census sources feed Racine County's numbers. Whatever zone Racine County carries, the zone explainer covers what it does and doesn't tell you about any one house.