Oklahoma Radon Zone Map
Counties colored by EPA radon zone. Red = Zone 1, Orange = Zone 2, Green = Zone 3.
All 77 Counties — By Radon Risk
| County | EPA Zone | Tests | % Above 4 pCi/L |
|---|
| Adair |
Moderate |
— |
— |
| Beaver |
Moderate |
— |
— |
| Cherokee |
Moderate |
6 |
— |
| Cimarron |
Moderate |
— |
— |
| Delaware |
Moderate |
9 |
44.4% |
| Ellis |
Moderate |
— |
— |
| Mayes |
Moderate |
8 |
50% |
| Sequoyah |
Moderate |
7 |
— |
| Texas |
Moderate |
— |
— |
| Alfalfa |
Low |
— |
— |
| Atoka |
Low |
— |
— |
| Beckham |
Low |
4 |
— |
| Blaine |
Low |
— |
— |
| Bryan |
Low |
7 |
57.1% |
| Caddo |
Low |
4 |
— |
| Canadian |
Low |
21 |
38.1% |
| Carter |
Low |
7 |
— |
| Choctaw |
Low |
— |
— |
| Cleveland |
Low |
36 |
33.3% |
| Coal |
Low |
— |
— |
| Comanche |
Low |
12 |
41.7% |
| Cotton |
Low |
— |
— |
| Craig |
Low |
— |
— |
| Creek |
Low |
11 |
54.5% |
| Custer |
Low |
5 |
— |
| Dewey |
Low |
— |
— |
| Garfield |
Low |
10 |
60% |
| Garvin |
Low |
4 |
— |
| Grady |
Low |
10 |
— |
| Grant |
Low |
— |
— |
| Greer |
Low |
— |
— |
| Harmon |
Low |
— |
— |
| Harper |
Low |
— |
— |
| Haskell |
Low |
— |
— |
| Hughes |
Low |
— |
— |
| Jackson |
Low |
— |
— |
| Jefferson |
Low |
— |
— |
| Johnston |
Low |
— |
— |
| Kay |
Low |
6 |
— |
| Kingfisher |
Low |
— |
— |
| Kiowa |
Low |
— |
— |
| Latimer |
Low |
— |
— |
| Le Flore |
Low |
8 |
— |
| Lincoln |
Low |
5 |
— |
| Logan |
Low |
6 |
— |
| Love |
Low |
— |
— |
| Major |
Low |
— |
— |
| Marshall |
Low |
— |
— |
| McClain |
Low |
4 |
— |
| McCurtain |
Low |
5 |
— |
| McIntosh |
Low |
— |
— |
| Murray |
Low |
— |
— |
| Muskogee |
Low |
10 |
40% |
| Noble |
Low |
— |
— |
| Nowata |
Low |
— |
— |
| Okfuskee |
Low |
— |
— |
| Oklahoma |
Low |
105 |
34.3% |
| Okmulgee |
Low |
7 |
— |
| Osage |
Low |
7 |
— |
| Ottawa |
Low |
5 |
— |
| Pawnee |
Low |
— |
— |
| Payne |
Low |
9 |
— |
| Pittsburg |
Low |
10 |
40% |
| Pontotoc |
Low |
6 |
— |
| Pottawatomie |
Low |
10 |
— |
| Pushmataha |
Low |
— |
— |
| Roger Mills |
Low |
— |
— |
| Rogers |
Low |
9 |
77.8% |
| Seminole |
Low |
5 |
— |
| Stephens |
Low |
8 |
— |
| Tillman |
Low |
— |
— |
| Tulsa |
Low |
87 |
39.1% |
| Wagoner |
Low |
10 |
40% |
| Washington |
Low |
9 |
55.6% |
| Washita |
Low |
— |
— |
| Woods |
Low |
— |
— |
| Woodward |
Low |
5 |
— |
Sources: EPA Map of Radon Zones, CDC Environmental Health Tracking Network
Frequently Asked Questions
How many counties in Oklahoma have high radon risk?
Oklahoma has 0 counties classified as EPA Zone 1 (high radon risk), 9 as Zone 2 (moderate), and 68 as Zone 3 (low risk).
Is radon a problem in Oklahoma?
The EPA recommends all homes in Oklahoma be tested for radon, regardless of which zone they're in.
How do I check radon levels for my Oklahoma address?
Enter your ZIP code in the search box above to see your county's EPA radon zone and available testing data. For your specific home's radon level, you'll need a radon test kit.