Radon Zone Map

All counties

Radon zones in Pennsylvania

Adams CountyPennsylvania1
Allegheny CountyPennsylvania1
Armstrong CountyPennsylvania1
Beaver CountyPennsylvania1
Bedford CountyPennsylvania1
Berks CountyPennsylvania1
Blair CountyPennsylvania1
Bradford CountyPennsylvania1
Bucks CountyPennsylvania1
Butler CountyPennsylvania1
Cambria CountyPennsylvania2
Cameron CountyPennsylvania1
Carbon CountyPennsylvania1
Centre CountyPennsylvania1
Chester CountyPennsylvania1
Clarion CountyPennsylvania1
Clearfield CountyPennsylvania1
Clinton CountyPennsylvania1
Columbia CountyPennsylvania1
Crawford CountyPennsylvania2
Cumberland CountyPennsylvania1
Dauphin CountyPennsylvania1
Delaware CountyPennsylvania1
Elk CountyPennsylvania2
Erie CountyPennsylvania2
Fayette CountyPennsylvania2
Forest CountyPennsylvania2
Franklin CountyPennsylvania1
Fulton CountyPennsylvania1
Greene CountyPennsylvania2
Huntingdon CountyPennsylvania1
Indiana CountyPennsylvania1
Jefferson CountyPennsylvania2
Lackawanna CountyPennsylvania1
Lancaster CountyPennsylvania1
Lawrence CountyPennsylvania2
Lebanon CountyPennsylvania1
Lehigh CountyPennsylvania1
Luzerne CountyPennsylvania1
Lycoming CountyPennsylvania1
McKean CountyPennsylvania2
Mercer CountyPennsylvania2
Monroe CountyPennsylvania1
Montgomery CountyPennsylvania1
Montour CountyPennsylvania1
Perry CountyPennsylvania1
Pike CountyPennsylvania2
Potter CountyPennsylvania2
Schuylkill CountyPennsylvania1
Snyder CountyPennsylvania1
Somerset CountyPennsylvania2
Sullivan CountyPennsylvania1
Susquehanna CountyPennsylvania1
Tioga CountyPennsylvania1
Union CountyPennsylvania1
Venango CountyPennsylvania1
Warren CountyPennsylvania2
Washington CountyPennsylvania2
Wayne CountyPennsylvania2
Westmoreland CountyPennsylvania1
Wyoming CountyPennsylvania1
York CountyPennsylvania1

Sources

  1. Pennsylvania: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  2. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  3. Pennsylvania: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  4. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  5. Pennsylvania: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  6. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  7. Pennsylvania: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  8. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  9. Pennsylvania: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  10. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  11. Pennsylvania: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  12. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026

"Secondary" marks a source used only because the official page could not be read.