Kingman County, KS: EPA's radon zone, explained

Kingman County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Rank it against the rest of the country and Kingman County lands in the 73rd percentile for radon potential.

Where Kingman County sits nationally

Kingman County, Kansas is home to about 6,946 people across 863.419 square miles. Population density there runs about 8 people per square mile. By population, Kingman County is the 849th largest of every county sharing its EPA zone — the 20th percentile by population within that zone. EPA's geology-based Region 7 groups Kingman County with 411 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Kingman County

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Kingman County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. That doesn't mean every Kingman County house tests high — a zone is a county-wide prediction, never a single-home reading — but it's a reason to test sooner rather than let it wait.

Next steps for a home in Kingman County

For a Kingman 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 Kansas's state radon program

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

Where Kingman County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Kingman County's numbers. Whatever zone Kingman County carries, the zone explainer covers what it does and doesn't tell you about any one house.