Each state is shaded by its age-adjusted cancer incidence (CDC USCS, 2017–2021). EPA Radon Zone 1 states — where predicted indoor radon exceeds the 4 pCi/L action level — are outlined in red. Switch reporting years to see how the overlap shifts over time.
457
Mean all-cancer rate · Zone 1 · 2017-2021
447
Mean rate · Zone 2 + 3 · 2017-2021
+10.6 (+2.4%)
Zone 1 minus non-Zone-1
Reporting yearCompare toMetricOverlay
Loading map…
All-cancer incidence (per 100k, age-adjusted)376510EPA Radon Zone 1Click a state for details.
Sources: cancer rates — CDC U.S. Cancer Statistics & NCI State Cancer Profiles (age-adjusted, 2017–2021). Radon zones — EPA Map of Radon Zones 402-R-93-071, summarized at the state level by modal county zone. State-level averages mask large within-state variation; always test the specific home.