EPA Zone Data 2026
OK Radon Levels
View EPA radon zone classifications for every county in OK. Select your county to see detailed risk data, testing recommendations, and mitigation cost estimates.
0
Zone 1
High Risk
High Risk
9
Zone 2
Moderate
Moderate
68
Zone 3
Low Risk
Low Risk
Adair
Zone 2
Alfalfa
Zone 3
Atoka
Zone 3
Beaver
Zone 2
Beckham
Zone 3
Blaine
Zone 3
Bryan
Zone 3
Caddo
Zone 3
Canadian
Zone 3
Carter
Zone 3
Cherokee
Zone 2
Choctaw
Zone 3
Cimarron
Zone 2
Cleveland
Zone 3
Coal
Zone 3
Comanche
Zone 3
Cotton
Zone 3
Craig
Zone 3
Creek
Zone 3
Custer
Zone 3
Delaware
Zone 2
Dewey
Zone 3
Ellis
Zone 2
Garfield
Zone 3
Garvin
Zone 3
Grady
Zone 3
Grant
Zone 3
Greer
Zone 3
Harmon
Zone 3
Harper
Zone 3
Haskell
Zone 3
Hughes
Zone 3
Jackson
Zone 3
Jefferson
Zone 3
Johnston
Zone 3
Kay
Zone 3
Kingfisher
Zone 3
Kiowa
Zone 3
Latimer
Zone 3
Le Flore
Zone 3
Lincoln
Zone 3
Logan
Zone 3
Love
Zone 3
Major
Zone 3
Marshall
Zone 3
Mayes
Zone 2
McClain
Zone 3
McCurtain
Zone 3
McIntosh
Zone 3
Murray
Zone 3
Muskogee
Zone 3
Noble
Zone 3
Nowata
Zone 3
Okfuskee
Zone 3
Oklahoma
Zone 3
Okmulgee
Zone 3
Osage
Zone 3
Ottawa
Zone 3
Pawnee
Zone 3
Payne
Zone 3
Pittsburg
Zone 3
Pontotoc
Zone 3
Pottawatomie
Zone 3
Pushmataha
Zone 3
Roger Mills
Zone 3
Rogers
Zone 3
Seminole
Zone 3
Sequoyah
Zone 2
Stephens
Zone 3
Texas
Zone 2
Tillman
Zone 3
Tulsa
Zone 3
Wagoner
Zone 3
Washington
Zone 3
Washita
Zone 3
Woods
Zone 3
Woodward
Zone 3
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