Radon zones in Indiana
Zone 1: 57, Zone 2: 35, Zone 3: 0. A zone is an area estimate; EPA says all homes should be tested.
- Adams County Zone 1
- Allen County Zone 1
- Bartholomew County Zone 1
- Benton County Zone 1
- Blackford County Zone 1
- Boone County Zone 1
- Brown County Zone 2
- Carroll County Zone 1
- Cass County Zone 1
- Clark County Zone 1
- Clay County Zone 2
- Clinton County Zone 1
- Crawford County Zone 2
- Daviess County Zone 2
- Dearborn County Zone 2
- Decatur County Zone 1
- DeKalb County Zone 1
- Delaware County Zone 1
- Dubois County Zone 2
- Elkhart County Zone 1
- Fayette County Zone 1
- Floyd County Zone 2
- Fountain County Zone 1
- Franklin County Zone 2
- Fulton County Zone 1
- Gibson County Zone 2
- Grant County Zone 1
- Greene County Zone 2
- Hamilton County Zone 1
- Hancock County Zone 1
- Harrison County Zone 1
- Hendricks County Zone 1
- Henry County Zone 1
- Howard County Zone 1
- Huntington County Zone 1
- Jackson County Zone 2
- Jasper County Zone 2
- Jay County Zone 1
- Jefferson County Zone 2
- Jennings County Zone 1
- Johnson County Zone 1
- Knox County Zone 2
- Kosciusko County Zone 1
- LaGrange County Zone 1
- Lake County Zone 2
- LaPorte County Zone 2
- Lawrence County Zone 1
- Madison County Zone 1
- Marion County Zone 1
- Marshall County Zone 1
- Martin County Zone 2
- Miami County Zone 1
- Monroe County Zone 1
- Montgomery County Zone 1
- Morgan County Zone 2
- Newton County Zone 2
- Noble County Zone 1
- Ohio County Zone 2
- Orange County Zone 1
- Owen County Zone 2
- Parke County Zone 2
- Perry County Zone 2
- Pike County Zone 2
- Porter County Zone 2
- Posey County Zone 2
- Pulaski County Zone 2
- Putnam County Zone 1
- Randolph County Zone 1
- Ripley County Zone 2
- Rush County Zone 1
- St. Joseph County Zone 1
- Scott County Zone 1
- Shelby County Zone 1
- Spencer County Zone 2
- Starke County Zone 2
- Steuben County Zone 1
- Sullivan County Zone 2
- Switzerland County Zone 2
- Tippecanoe County Zone 1
- Tipton County Zone 1
- Union County Zone 1
- Vanderburgh County Zone 2
- Vermillion County Zone 1
- Vigo County Zone 2
- Wabash County Zone 1
- Warren County Zone 1
- Warrick County Zone 2
- Washington County Zone 1
- Wayne County Zone 1
- Wells County Zone 1
- White County Zone 1
- Whitley County Zone 1
County not listed? See what we left out and why. Leave your email to hear if this data changes.