What EPA's radon map says about Scotland County

Scotland 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, Scotland County ranks higher in radon potential than 36% of rated counties (the 36th percentile).

How Scotland County compares

About 4,698 people live in Scotland County, Missouri, spread over 436.507 square miles. Population density there runs about 11 people per square mile. Among counties sharing Scotland County's EPA zone, it outranks 8% of them by population. Scotland 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 Scotland County

Scotland 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. A county-wide moderate average, like Scotland County's, can still hide a specific house well above or below it — testing is what actually answers the question.

If Scotland County tests above the action level

Mitigation cost doesn't depend on Scotland 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

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

Scotland 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.