Radon zones in Texas

Zone 1: 0, Zone 2: 39, Zone 3: 215. A zone is an area estimate; EPA says all homes should be tested.

• Anderson County Zone 3
• Andrews County Zone 3
• Angelina County Zone 3
• Aransas County Zone 3
• Archer County Zone 3
• Armstrong County Zone 2
• Atascosa County Zone 3
• Austin County Zone 3
• Bailey County Zone 2
• Bandera County Zone 3
• Bastrop County Zone 3
• Baylor County Zone 3
• Bee County Zone 3
• Bell County Zone 3
• Bexar County Zone 3
• Blanco County Zone 3
• Borden County Zone 3
• Bosque County Zone 3
• Bowie County Zone 3
• Brazoria County Zone 3
• Brazos County Zone 3
• Brewster County Zone 2
• Briscoe County Zone 3
• Brooks County Zone 3
• Brown County Zone 3
• Burleson County Zone 3
• Burnet County Zone 3
• Caldwell County Zone 3
• Calhoun County Zone 3
• Callahan County Zone 3
• Cameron County Zone 3
• Camp County Zone 3
• Carson County Zone 2
• Cass County Zone 3
• Castro County Zone 2
• Chambers County Zone 3
• Cherokee County Zone 3
• Childress County Zone 3
• Clay County Zone 3
• Cochran County Zone 3
• Coke County Zone 3
• Coleman County Zone 3
• Collin County Zone 3
• Collingsworth County Zone 3
• Colorado County Zone 3
• Comal County Zone 3
• Comanche County Zone 3
• Concho County Zone 3
• Cooke County Zone 3
• Coryell County Zone 3
• Cottle County Zone 3
• Crane County Zone 3
• Crockett County Zone 3
• Crosby County Zone 2
• Culberson County Zone 2
• Dallam County Zone 2
• Dallas County Zone 3
• Dawson County Zone 3
• Deaf Smith County Zone 2
• Delta County Zone 3
• Denton County Zone 3
• DeWitt County Zone 3
• Dickens County Zone 3
• Dimmit County Zone 3
• Donley County Zone 2
• Duval County Zone 3
• Eastland County Zone 3
• Ector County Zone 3
• Edwards County Zone 3
• Ellis County Zone 3
• El Paso County Zone 3
• Erath County Zone 3
• Falls County Zone 3
• Fannin County Zone 3
• Fayette County Zone 3
• Fisher County Zone 3
• Floyd County Zone 2
• Foard County Zone 3
• Fort Bend County Zone 3
• Franklin County Zone 3
• Freestone County Zone 3
• Frio County Zone 3
• Gaines County Zone 3
• Galveston County Zone 3
• Garza County Zone 2
• Gillespie County Zone 3
• Glasscock County Zone 3
• Goliad County Zone 3
• Gonzales County Zone 3
• Gray County Zone 2
• Grayson County Zone 3
• Gregg County Zone 3
• Grimes County Zone 3
• Guadalupe County Zone 3
• Hale County Zone 2
• Hall County Zone 3
• Hamilton County Zone 3
• Hansford County Zone 2
• Hardeman County Zone 3
• Hardin County Zone 3
• Harris County Zone 3
• Harrison County Zone 3
• Hartley County Zone 2
• Haskell County Zone 3
• Hays County Zone 3
• Hemphill County Zone 2
• Henderson County Zone 3
• Hidalgo County Zone 3
• Hill County Zone 3
• Hockley County Zone 2
• Hood County Zone 3
• Hopkins County Zone 3
• Houston County Zone 3
• Howard County Zone 3
• Hudspeth County Zone 2
• Hunt County Zone 3
• Hutchinson County Zone 2
• Irion County Zone 3
• Jack County Zone 3
• Jackson County Zone 3
• Jasper County Zone 3
• Jeff Davis County Zone 2
• Jefferson County Zone 3
• Jim Hogg County Zone 3
• Jim Wells County Zone 3
• Johnson County Zone 3
• Jones County Zone 3
• Karnes County Zone 3
• Kaufman County Zone 3
• Kendall County Zone 3
• Kenedy County Zone 3
• Kent County Zone 3
• Kerr County Zone 3
• Kimble County Zone 3
• King County Zone 3
• Kinney County Zone 3
• Kleberg County Zone 3
• Knox County Zone 3
• Lamar County Zone 3
• Lamb County Zone 2
• Lampasas County Zone 3
• La Salle County Zone 3
• Lavaca County Zone 3
• Lee County Zone 3
• Leon County Zone 3
• Liberty County Zone 3
• Limestone County Zone 3
• Lipscomb County Zone 2
• Live Oak County Zone 3
• Llano County Zone 2
• Loving County Zone 3
• Lubbock County Zone 2
• Lynn County Zone 2
• McCulloch County Zone 3
• McLennan County Zone 3
• McMullen County Zone 3
• Madison County Zone 3
• Marion County Zone 3
• Martin County Zone 3
• Mason County Zone 2
• Matagorda County Zone 3
• Maverick County Zone 3
• Medina County Zone 3
• Menard County Zone 3
• Midland County Zone 3
• Milam County Zone 3
• Mills County Zone 3
• Mitchell County Zone 3
• Montague County Zone 3
• Montgomery County Zone 3
• Moore County Zone 2
• Morris County Zone 3
• Motley County Zone 3
• Nacogdoches County Zone 3
• Navarro County Zone 3
• Newton County Zone 3
• Nolan County Zone 3
• Nueces County Zone 3
• Ochiltree County Zone 2
• Oldham County Zone 2
• Orange County Zone 3
• Palo Pinto County Zone 3
• Panola County Zone 3
• Parker County Zone 3
• Parmer County Zone 2
• Pecos County Zone 3
• Polk County Zone 3
• Potter County Zone 2
• Presidio County Zone 2
• Rains County Zone 3
• Randall County Zone 2
• Reagan County Zone 3
• Real County Zone 3
• Red River County Zone 3
• Reeves County Zone 2
• Refugio County Zone 3
• Roberts County Zone 2
• Robertson County Zone 3
• Rockwall County Zone 3
• Runnels County Zone 3
• Rusk County Zone 3
• Sabine County Zone 3
• San Augustine County Zone 3
• San Jacinto County Zone 3
• San Patricio County Zone 3
• San Saba County Zone 3
• Schleicher County Zone 3
• Scurry County Zone 3
• Shackelford County Zone 3
• Shelby County Zone 3
• Sherman County Zone 2
• Smith County Zone 3
• Somervell County Zone 3
• Starr County Zone 3
• Stephens County Zone 3
• Sterling County Zone 3
• Stonewall County Zone 3
• Sutton County Zone 3
• Swisher County Zone 2
• Tarrant County Zone 3
• Taylor County Zone 3
• Terrell County Zone 2
• Terry County Zone 3
• Throckmorton County Zone 3
• Titus County Zone 3
• Tom Green County Zone 3
• Travis County Zone 3
• Trinity County Zone 3
• Tyler County Zone 3
• Upshur County Zone 3
• Upton County Zone 3
• Uvalde County Zone 3
• Val Verde County Zone 3
• Van Zandt County Zone 3
• Victoria County Zone 3
• Walker County Zone 3
• Waller County Zone 3
• Ward County Zone 3
• Washington County Zone 3
• Webb County Zone 3
• Wharton County Zone 3
• Wheeler County Zone 3
• Wichita County Zone 3
• Wilbarger County Zone 3
• Willacy County Zone 3
• Williamson County Zone 3
• Wilson County Zone 3
• Winkler County Zone 3
• Wise County Zone 3
• Wood County Zone 3
• Yoakum County Zone 3
• Young County Zone 3
• Zapata County Zone 3
• Zavala County Zone 3