Radon test kits near you

Local kits first, cheapest first. Then your state's program. Then mail-in kits that ship anywhere.

Radon by the numbers

Nearly 1 in 15 U.S. homes is estimated to have elevated radon.EPA

21,000

Lung cancer deaths a year from radon, by EPA's estimate. It is the leading cause among non-smokers.EPA

34%

of U.S. counties (1,074 of 3,143) are in EPA's highest radon zone.By state

Any home can be high or low, whatever the numbers say. A test is the only way to know yours. Checked October 1, 2026.