Louisiana Radon Zone Map
Counties colored by EPA radon zone. Red = Zone 1, Orange = Zone 2, Green = Zone 3.
All 64 Counties — By Radon Risk
| County | EPA Zone | Tests | % Above 4 pCi/L |
|---|
| Acadia |
Low |
10 |
40% |
| Allen |
Low |
8 |
— |
| Ascension |
Low |
16 |
43.8% |
| Assumption |
Low |
5 |
— |
| Avoyelles |
Low |
7 |
— |
| Beauregard |
Low |
4 |
— |
| Bienville |
Low |
4 |
— |
| Bossier |
Low |
20 |
25% |
| Caddo |
Low |
50 |
34% |
| Calcasieu |
Low |
37 |
37.8% |
| Caldwell |
Low |
— |
— |
| Cameron |
Low |
— |
— |
| Catahoula |
Low |
— |
— |
| Claiborne |
Low |
— |
— |
| Concordia |
Low |
4 |
— |
| De Soto |
Low |
7 |
— |
| East Baton Rouge |
Low |
65 |
32.3% |
| East Carroll |
Low |
— |
— |
| East Feliciana |
Low |
— |
— |
| Evangeline |
Low |
8 |
— |
| Franklin |
Low |
4 |
— |
| Grant |
Low |
— |
— |
| Iberia |
Low |
11 |
— |
| Iberville |
Low |
5 |
— |
| Jackson |
Low |
4 |
— |
| Jefferson |
Low |
77 |
31.2% |
| Jefferson Davis |
Low |
5 |
— |
| LaSalle |
Low |
— |
— |
| Lafayette |
Low |
34 |
29.4% |
| Lafourche |
Low |
18 |
33.3% |
| Lincoln |
Low |
5 |
— |
| Livingston |
Low |
17 |
41.2% |
| Madison |
Low |
— |
— |
| Morehouse |
Low |
5 |
— |
| Natchitoches |
Low |
9 |
— |
| Orleans |
Low |
59 |
27.1% |
| Ouachita |
Low |
31 |
25.8% |
| Plaquemines |
Low |
— |
— |
| Pointe Coupee |
Low |
4 |
— |
| Rapides |
Low |
22 |
36.4% |
| Red River |
Low |
— |
— |
| Richland |
Low |
5 |
— |
| Sabine |
Low |
— |
— |
| St. Bernard |
Low |
6 |
— |
| St. Charles |
Low |
9 |
— |
| St. Helena |
Low |
— |
— |
| St. James |
Low |
— |
— |
| St. John the Baptist |
Low |
7 |
— |
| St. Landry |
Low |
18 |
33.3% |
| St. Martin |
Low |
12 |
— |
| St. Mary |
Low |
9 |
— |
| St. Tammany |
Low |
48 |
29.2% |
| Tangipahoa |
Low |
19 |
31.6% |
| Tensas |
Low |
— |
— |
| Terrebonne |
Low |
19 |
31.6% |
| Union |
Low |
5 |
— |
| Vermilion |
Low |
11 |
— |
| Vernon |
Low |
7 |
— |
| Washington |
Low |
10 |
— |
| Webster |
Low |
10 |
— |
| West Baton Rouge |
Low |
— |
— |
| West Carroll |
Low |
— |
— |
| West Feliciana |
Low |
— |
— |
| Winn |
Low |
— |
— |
Sources: EPA Map of Radon Zones, CDC Environmental Health Tracking Network
Frequently Asked Questions
How many counties in Louisiana have high radon risk?
Louisiana has 0 counties classified as EPA Zone 1 (high radon risk), 0 as Zone 2 (moderate), and 64 as Zone 3 (low risk).
Is radon a problem in Louisiana?
The EPA recommends all homes in Louisiana be tested for radon, regardless of which zone they're in.
How do I check radon levels for my Louisiana 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.