What EPA's radon map says about Crawford County

EPA's own radon map rates Crawford County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Crawford County sits at the 47th percentile nationally for radon potential — above 47 of every 100 rated counties.

Where Crawford County sits nationally

About 22,808 people live in Crawford County, Missouri, spread over 742.477 square miles. Averaged across its land area, Crawford County runs about 31 people per square mile. Among counties sharing Crawford County's EPA zone, it outranks 44% of them by population. Crawford County falls in EPA Radon Region 7, one of 412 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Crawford County

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Crawford County's Zone 2 prediction lands in the gap between the two. Nothing about a Zone 2 label lowers the case for testing in Crawford County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Crawford County

Mitigation cost doesn't depend on Crawford 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 Missouri's state radon program

Crawford County's test kit answers today; a Airthings radon monitor keeps answering for Crawford 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

Crawford County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Crawford County carries, the zone explainer covers what it does and doesn't tell you about any one house.