Kalamazoo County, MI radon potential

EPA's own radon map rates Kalamazoo County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Rank it against the rest of the country and Kalamazoo County lands in the 97th percentile for radon potential.

Where Kalamazoo County sits nationally

Kalamazoo County, Michigan is home to about 264,780 people across 561.959 square miles. Averaged across its land area, Kalamazoo County runs about 471 people per square mile. Within its own EPA zone, Kalamazoo County is bigger by population than 92% of the counties that share it. EPA's geology-based Region 5 groups Kalamazoo County with 523 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Kalamazoo County's predicted average sits above EPA's own action level of 4 pCi/L — the concentration at which EPA recommends fixing a home — versus a national average around 1.3 pCi/L indoors and 0.4 pCi/L outdoors. Being in Zone 1 raises the odds Kalamazoo County homes test above the action level, but it does not mean any specific house does — EPA recommends every home be tested, in every zone, because the only way to know is to test.

Testing and mitigation in Kalamazoo County

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 Michigan's state radon program

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

Where Kalamazoo 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.