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Map of Radon Zones in Texas based on Environmental Protection Agency (EPA) data

Back to Radon Zones in the United States




Radon zones
 Zone 3 (200 counties)
 Zone 2 (39 counties)
 Zone 1 (0 counties)
  Highest Potential: counties have a predicted average indoor radon screening level greater than 4 pCi/L (pico curies per liter) (red zones)
  Moderate Potential: counties have a predicted average indoor radon screening level between 2 and 4 pCi/L (orange zones)
  Low Potential: counties have a predicted average indoor radon screening level less than 2 pCi/L (yellow zones)
Anderson County
Radon zone : 3

Andrews County
Radon zone : 3

Angelina County
Radon zone : 3

Aransas County
Radon zone : 3

Archer County
Radon zone : 3

Armstrong County
Radon zone : 2

Atascosa County
Radon zone : 3

Austin County
Radon zone : 3

Bailey County
Radon zone : 2

Bandera County
Radon zone : 3

Bastrop County
Radon zone : 3

Baylor County
Radon zone : 3

Bee County
Radon zone : 3

Bell County
Radon zone : 3

Bexar County
Radon zone : 3

Blanco County
Radon zone : 3

Borden County
Radon zone : No data

Bosque County
Radon zone : 3

Bowie County
Radon zone : 3

Brazoria County
Radon zone : 3

Brazos County
Radon zone : 3

Brewster County
Radon zone : 2

Briscoe County
Radon zone : No data

Brooks County
Radon zone : 3

Brown County
Radon zone : 3

Burleson County
Radon zone : 3

Burnet County
Radon zone : 3

Caldwell County
Radon zone : 3

Calhoun County
Radon zone : 3

Callahan County
Radon zone : 3

Cameron County
Radon zone : 3

Camp County
Radon zone : 3

Carson County
Radon zone : 2

Cass County
Radon zone : 3

Castro County
Radon zone : 2

Chambers County
Radon zone : 3

Cherokee County
Radon zone : 3

Childress County
Radon zone : 3

Clay County
Radon zone : 3

Cochran County
Radon zone : 3

Coke County
Radon zone : 3

Coleman County
Radon zone : 3

Collin County
Radon zone : 3

Collingsworth County
Radon zone : 3

Colorado County
Radon zone : 3

Comal County
Radon zone : 3

Comanche County
Radon zone : 3

Concho County
Radon zone : No data

Cooke County
Radon zone : 3

Coryell County
Radon zone : 3

Cottle County
Radon zone : 3

Crane County
Radon zone : 3

Crockett County
Radon zone : No data

Crosby County
Radon zone : 2

Culberson County
Radon zone : 2

Dallam County
Radon zone : 2

Dallas County
Radon zone : 3

Dawson County
Radon zone : 3

DeWitt County
Radon zone : 3

Deaf Smith County
Radon zone : 2

Delta County
Radon zone : 3

Denton County
Radon zone : 3

Dickens County
Radon zone : No data

Dimmit County
Radon zone : 3

Donley County
Radon zone : 2

Duval County
Radon zone : No data

Eastland County
Radon zone : 3

Ector County
Radon zone : 3

Edwards County
Radon zone : No data

El Paso County
Radon zone : 3

Ellis County
Radon zone : 3

Erath County
Radon zone : 3

Falls County
Radon zone : 3

Fannin County
Radon zone : 3

Fayette County
Radon zone : 3

Fisher County
Radon zone : 3

Floyd County
Radon zone : 2

Foard County
Radon zone : 3

Fort Bend County
Radon zone : 3

Franklin County
Radon zone : 3

Freestone County
Radon zone : 3

Frio County
Radon zone : 3

Gaines County
Radon zone : 3

Galveston County
Radon zone : 3

Garza County
Radon zone : 2

Gillespie County
Radon zone : 3

Glasscock County
Radon zone : No data

Goliad County
Radon zone : No data

Gonzales County
Radon zone : 3

Gray County
Radon zone : 2

Grayson County
Radon zone : 3

Gregg County
Radon zone : 3

Grimes County
Radon zone : 3

Guadalupe County
Radon zone : 3

Hale County
Radon zone : 2

Hall County
Radon zone : 3

Hamilton County
Radon zone : 3

Hansford County
Radon zone : 2

Hardeman County
Radon zone : 3

Hardin County
Radon zone : 3

Harris County
Radon zone : 3

Harrison County
Radon zone : 3

Hartley County
Radon zone : 2

Haskell County
Radon zone : 3

Hays County
Radon zone : 3

Hemphill County
Radon zone : 2

Henderson County
Radon zone : 3

Hidalgo County
Radon zone : 3

Hill County
Radon zone : 3

Hockley County
Radon zone : 2

Hood County
Radon zone : 3

Hopkins County
Radon zone : 3

Houston County
Radon zone : 3

Howard County
Radon zone : 3

Hudspeth County
Radon zone : 2

Hunt County
Radon zone : 3

Hutchinson County
Radon zone : 2

Irion County
Radon zone : No data

Jack County
Radon zone : 3

Jackson County
Radon zone : 3

Jasper County
Radon zone : 3

Jeff Davis County
Radon zone : 2

Jefferson County
Radon zone : 3

Jim Hogg County
Radon zone : No data

Jim Wells County
Radon zone : 3

Johnson County
Radon zone : 3

Jones County
Radon zone : 3

Karnes County
Radon zone : 3

Kaufman County
Radon zone : 3

Kendall County
Radon zone : 3

Kenedy County
Radon zone : No data

Kent County
Radon zone : No data

Kerr County
Radon zone : 3

Kimble County
Radon zone : 3

King County
Radon zone : No data

Kinney County
Radon zone : 3

Kleberg County
Radon zone : 3

Knox County
Radon zone : No data

La Salle County
Radon zone : 3

Lamar County
Radon zone : 3

Lamb County
Radon zone : 2

Lampasas County
Radon zone : 3

Lavaca County
Radon zone : 3

Lee County
Radon zone : 3

Leon County
Radon zone : No data

Liberty County
Radon zone : 3

Limestone County
Radon zone : 3

Lipscomb County
Radon zone : 2

Live Oak County
Radon zone : 3

Llano County
Radon zone : 2

Loving County
Radon zone : No data

Lubbock County
Radon zone : 2

Lynn County
Radon zone : 2

Madison County
Radon zone : 3

Marion County
Radon zone : 3

Martin County
Radon zone : 3

Mason County
Radon zone : 2

Matagorda County
Radon zone : 3

Maverick County
Radon zone : 3

McCulloch County
Radon zone : 3

McLennan County
Radon zone : 3

McMullen County
Radon zone : No data

Medina County
Radon zone : 3

Menard County
Radon zone : No data

Midland County
Radon zone : 3

Milam County
Radon zone : 3

Mills County
Radon zone : No data

Mitchell County
Radon zone : 3

Montague County
Radon zone : 3

Montgomery County
Radon zone : 3

Moore County
Radon zone : 2

Morris County
Radon zone : 3

Motley County
Radon zone : 3

Nacogdoches County
Radon zone : 3

Navarro County
Radon zone : 3

Newton County
Radon zone : 3

Nolan County
Radon zone : 3

Nueces County
Radon zone : 3

Ochiltree County
Radon zone : 2

Oldham County
Radon zone : 2

Orange County
Radon zone : 3

Palo Pinto County
Radon zone : 3

Panola County
Radon zone : 3

Parker County
Radon zone : 3

Parmer County
Radon zone : 2

Pecos County
Radon zone : 3

Polk County
Radon zone : 3

Potter County
Radon zone : 2

Presidio County
Radon zone : 2

Rains County
Radon zone : 3

Randall County
Radon zone : 2

Reagan County
Radon zone : 3

Real County
Radon zone : 3

Red River County
Radon zone : 3

Reeves County
Radon zone : 2

Refugio County
Radon zone : 3

Roberts County
Radon zone : 2

Robertson County
Radon zone : 3

Rockwall County
Radon zone : 3

Runnels County
Radon zone : 3

Rusk County
Radon zone : 3

Sabine County
Radon zone : 3

San Augustine County
Radon zone : 3

San Jacinto County
Radon zone : 3

San Patricio County
Radon zone : 3

San Saba County
Radon zone : 3

Schleicher County
Radon zone : 3

Scurry County
Radon zone : 3

Shackelford County
Radon zone : No data

Shelby County
Radon zone : 3

Sherman County
Radon zone : 2

Smith County
Radon zone : 3

Somervell County
Radon zone : 3

Starr County
Radon zone : 3

Stephens County
Radon zone : 3

Sterling County
Radon zone : No data

Stonewall County
Radon zone : No data

Sutton County
Radon zone : 3

Swisher County
Radon zone : 2

Tarrant County
Radon zone : 3

Taylor County
Radon zone : 3

Terrell County
Radon zone : 2

Terry County
Radon zone : 3

Throckmorton County
Radon zone : No data

Titus County
Radon zone : 3

Tom Green County
Radon zone : 3

Travis County
Radon zone : 3

Trinity County
Radon zone : 3

Tyler County
Radon zone : 3

Upshur County
Radon zone : 3

Upton County
Radon zone : 3

Uvalde County
Radon zone : 3

Val Verde County
Radon zone : 3

Van Zandt County
Radon zone : 3

Victoria County
Radon zone : 3

Walker County
Radon zone : 3

Waller County
Radon zone : 3

Ward County
Radon zone : 3

Washington County
Radon zone : 3

Webb County
Radon zone : 3

Wharton County
Radon zone : 3

Wheeler County
Radon zone : 3

Wichita County
Radon zone : 3

Wilbarger County
Radon zone : 3

Willacy County
Radon zone : 3

Williamson County
Radon zone : 3

Wilson County
Radon zone : 3

Winkler County
Radon zone : 3

Wise County
Radon zone : 3

Wood County
Radon zone : 3

Yoakum County
Radon zone : 3

Young County
Radon zone : 3

Zapata County
Radon zone : No data

Zavala County
Radon zone : 3


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