Is Camden County, MO a radon risk area?

EPA places Camden County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. That puts Camden County in the 54th percentile nationally for radon potential — higher than 54% of the counties EPA has rated.

Camden County by the numbers

About 44,135 people live in Camden County, Missouri, spread over 655.937 square miles. That works out to roughly 67 people per square mile. Rank 373 by population within its EPA zone puts Camden County at the 64th percentile among zone peers. Geologically, Camden County is grouped into EPA Region 7 alongside 411 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

Camden County's Zone 2 prediction clears the 1.3 pCi/L national indoor average without reaching EPA's own 4 pCi/L point for recommending a fix. Nothing about a Zone 2 label lowers the case for testing in Camden County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Camden County

Nothing about Camden 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 Missouri's state radon program

Camden County's test kit answers today; a Airthings radon monitor keeps answering for Camden 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 Camden County's numbers. Whatever zone Camden County carries, the zone explainer covers what it does and doesn't tell you about any one house.