Miami County, KS radon potential

Miami 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, Miami County ranks higher in radon potential than 52% of rated counties (the 52nd percentile).

How Miami County compares

Miami County, Kansas is home to about 35,737 people across 575.88 square miles. Averaged across its land area, Miami County runs about 62 people per square mile. Within its own EPA zone, Miami County is bigger by population than 58% of the counties that share it. Miami County falls in EPA Radon Region 7, one of 412 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

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 Miami County's Zone 2 prediction. Nothing about a Zone 2 label lowers the case for testing in Miami County — EPA recommends it in every zone, moderate included.

If Miami County tests above the action level

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Kansas's state radon program

For Miami County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Miami 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 Miami 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.