Lawrence County, MO: EPA's radon zone, explained

EPA places Lawrence 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. Nationally that's the 53rd percentile for radon potential — Lawrence County outranks 53% of every county EPA has rated.

Lawrence County by the numbers

Lawrence County, Missouri is home to about 39,151 people across 611.753 square miles. That works out to roughly 64 people per square mile. By population, Lawrence County is the 404th largest of every county sharing its EPA zone — the 61st percentile by population within that zone. Lawrence 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 Lawrence County

Lawrence 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 Lawrence County — EPA recommends it in every zone, moderate included.

Next steps for a home in Lawrence County

For a Lawrence County homeowner, the order is simple: test first, since a kit costs a small fraction of what mitigation would. Only if the result clears 4 pCi/L does a system — typically $800–$2,500, about $1,200 for a common install — become worth pricing out.

Find Missouri's state radon program

For Lawrence County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Lawrence County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Code RADONZONE-10OFF takes 10% off at checkout.

Where Lawrence County's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.