Radon zones in Michigan
Zone 1: 9, Zone 2: 32, Zone 3: 42. A zone is an area estimate; EPA says all homes should be tested.
- Alcona County Zone 2
- Alger County Zone 2
- Allegan County Zone 3
- Alpena County Zone 2
- Antrim County Zone 2
- Arenac County Zone 3
- Baraga County Zone 2
- Barry County Zone 2
- Bay County Zone 3
- Benzie County Zone 3
- Berrien County Zone 3
- Branch County Zone 1
- Calhoun County Zone 1
- Cass County Zone 1
- Charlevoix County Zone 2
- Cheboygan County Zone 3
- Chippewa County Zone 3
- Clare County Zone 3
- Clinton County Zone 2
- Crawford County Zone 3
- Delta County Zone 3
- Dickinson County Zone 2
- Eaton County Zone 2
- Emmet County Zone 2
- Genesee County Zone 2
- Gladwin County Zone 3
- Gogebic County Zone 2
- Grand Traverse County Zone 3
- Gratiot County Zone 3
- Hillsdale County Zone 1
- Houghton County Zone 2
- Huron County Zone 3
- Ingham County Zone 2
- Ionia County Zone 2
- Iosco County Zone 3
- Iron County Zone 2
- Isabella County Zone 3
- Jackson County Zone 1
- Kalamazoo County Zone 1
- Kalkaska County Zone 3
- Kent County Zone 2
- Keweenaw County Zone 2
- Lake County Zone 3
- Lapeer County Zone 2
- Leelanau County Zone 2
- Lenawee County Zone 1
- Livingston County Zone 2
- Luce County Zone 3
- Mackinac County Zone 3
- Macomb County Zone 3
- Manistee County Zone 3
- Marquette County Zone 2
- Mason County Zone 3
- Mecosta County Zone 3
- Menominee County Zone 2
- Midland County Zone 3
- Missaukee County Zone 3
- Monroe County Zone 2
- Montcalm County Zone 2
- Montmorency County Zone 2
- Muskegon County Zone 3
- Newaygo County Zone 3
- Oakland County Zone 2
- Oceana County Zone 3
- Ogemaw County Zone 3
- Ontonagon County Zone 3
- Osceola County Zone 3
- Oscoda County Zone 3
- Otsego County Zone 2
- Ottawa County Zone 3
- Presque Isle County Zone 2
- Roscommon County Zone 3
- Saginaw County Zone 3
- St. Clair County Zone 3
- St. Joseph County Zone 1
- Sanilac County Zone 2
- Schoolcraft County Zone 3
- Shiawassee County Zone 2
- Tuscola County Zone 3
- Van Buren County Zone 3
- Washtenaw County Zone 1
- Wayne County Zone 3
- Wexford County Zone 3
County not listed? See what we left out and why. Leave your email to hear if this data changes.