Radon zones in Missouri
Zone 1: 11, Zone 2: 97, Zone 3: 7. A zone is an area estimate; EPA says all homes should be tested.
- Adair County Zone 2
- Andrew County Zone 1
- Atchison County Zone 1
- Audrain County Zone 2
- Barry County Zone 2
- Barton County Zone 2
- Bates County Zone 2
- Benton County Zone 2
- Bollinger County Zone 2
- Boone County Zone 2
- Buchanan County Zone 1
- Butler County Zone 3
- Caldwell County Zone 2
- Callaway County Zone 2
- Camden County Zone 2
- Cape Girardeau County Zone 2
- Carroll County Zone 2
- Carter County Zone 2
- Cass County Zone 1
- Cedar County Zone 2
- Chariton County Zone 2
- Christian County Zone 2
- Clark County Zone 2
- Clay County Zone 1
- Clinton County Zone 1
- Cole County Zone 2
- Cooper County Zone 2
- Crawford County Zone 2
- Dade County Zone 2
- Dallas County Zone 2
- Daviess County Zone 2
- DeKalb County Zone 2
- Dent County Zone 2
- Douglas County Zone 2
- Dunklin County Zone 3
- Franklin County Zone 2
- Gasconade County Zone 2
- Gentry County Zone 2
- Greene County Zone 2
- Grundy County Zone 2
- Harrison County Zone 2
- Henry County Zone 2
- Hickory County Zone 2
- Holt County Zone 1
- Howard County Zone 2
- Howell County Zone 2
- Iron County Zone 1
- Jackson County Zone 1
- Jasper County Zone 2
- Jefferson County Zone 2
- Johnson County Zone 2
- Knox County Zone 2
- Laclede County Zone 2
- Lafayette County Zone 2
- Lawrence County Zone 2
- Lewis County Zone 2
- Lincoln County Zone 2
- Linn County Zone 2
- Livingston County Zone 2
- McDonald County Zone 2
- Macon County Zone 2
- Madison County Zone 2
- Maries County Zone 2
- Marion County Zone 2
- Mercer County Zone 2
- Miller County Zone 2
- Mississippi County Zone 3
- Moniteau County Zone 2
- Monroe County Zone 2
- Montgomery County Zone 2
- Morgan County Zone 2
- New Madrid County Zone 3
- Newton County Zone 2
- Nodaway County Zone 1
- Oregon County Zone 2
- Osage County Zone 2
- Ozark County Zone 2
- Pemiscot County Zone 3
- Perry County Zone 2
- Pettis County Zone 2
- Phelps County Zone 2
- Pike County Zone 2
- Platte County Zone 1
- Polk County Zone 2
- Pulaski County Zone 2
- Putnam County Zone 2
- Ralls County Zone 2
- Randolph County Zone 2
- Ray County Zone 2
- Reynolds County Zone 2
- Ripley County Zone 2
- St. Charles County Zone 2
- St. Clair County Zone 2
- Ste. Genevieve County Zone 2
- St. Francois County Zone 2
- St. Louis County Zone 2
- Saline County Zone 2
- Schuyler County Zone 2
- Scotland County Zone 2
- Scott County Zone 3
- Shannon County Zone 2
- Shelby County Zone 2
- Stoddard County Zone 3
- Stone County Zone 2
- Sullivan County Zone 2
- Taney County Zone 2
- Texas County Zone 2
- Vernon County Zone 2
- Warren County Zone 2
- Washington County Zone 2
- Wayne County Zone 2
- Webster County Zone 2
- Worth County Zone 2
- Wright County Zone 2
- St. Louis city Zone 2
County not listed? See what we left out and why. Leave your email to hear if this data changes.