Out of 133 ZIP codes with data in Michigan, these are the lowest-ranked areas for radon zone. See also: National ZIP Codes with Highest Radon Risk | All Michigan Rankings
| Statistic | Value |
|---|---|
| ZIP codes ranked | 133 |
| Lowest value | Zone 1 (High) |
| Median value | Zone 1 (High) |
| State | Michigan |
100 Lowest-Ranked ZIP Codes
| Rank | ZIP Code | City | State | Radon Zone | Safety Score |
|---|---|---|---|---|---|
| 1 | 49016 | Battle Creek | MI | Zone 1 (High) | 33/100 |
| 2 | 49018 | Battle Creek | MI | Zone 1 (High) | 33/100 |
| 3 | 48115 | Bridgewater | MI | Zone 1 (High) | 40/100 |
| 4 | 49014 | Battle Creek | MI | Zone 1 (High) | 40/100 |
| 5 | 49015 | Battle Creek | MI | Zone 1 (High) | 40/100 |
| 6 | 49020 | Bedford | MI | Zone 1 (High) | 40/100 |
| 7 | 49052 | Fulton | MI | Zone 1 (High) | 40/100 |
| 8 | 49066 | Leonidas | MI | Zone 1 (High) | 40/100 |
| 9 | 49088 | Scotts | MI | Zone 1 (High) | 40/100 |
| 10 | 49089 | Sherwood | MI | Zone 1 (High) | 40/100 |
| 11 | 49095 | Vandalia | MI | Zone 1 (High) | 40/100 |
| 12 | 49227 | Allen | MI | Zone 1 (High) | 40/100 |
| 13 | 49233 | Cement City | MI | Zone 1 (High) | 40/100 |
| 14 | 49234 | Clarklake | MI | Zone 1 (High) | 40/100 |
| 15 | 49235 | Clayton | MI | Zone 1 (High) | 40/100 |
| 16 | 49239 | Frontier | MI | Zone 1 (High) | 40/100 |
| 17 | 49241 | Hanover | MI | Zone 1 (High) | 40/100 |
| 18 | 49246 | Horton | MI | Zone 1 (High) | 40/100 |
| 19 | 49249 | Jerome | MI | Zone 1 (High) | 40/100 |
| 20 | 49253 | Manitou Beach | MI | Zone 1 (High) | 40/100 |
| 21 | 49255 | Montgomery | MI | Zone 1 (High) | 40/100 |
| 22 | 49257 | Moscow | MI | Zone 1 (High) | 40/100 |
| 23 | 49258 | Mosherville | MI | Zone 1 (High) | 40/100 |
| 24 | 49262 | North Adams | MI | Zone 1 (High) | 40/100 |
| 25 | 49263 | Norvell | MI | Zone 1 (High) | 40/100 |
| 26 | 49266 | Osseo | MI | Zone 1 (High) | 40/100 |
| 27 | 49271 | Pittsford | MI | Zone 1 (High) | 40/100 |
| 28 | 49279 | Sand Creek | MI | Zone 1 (High) | 40/100 |
| 29 | 49281 | Somerset | MI | Zone 1 (High) | 40/100 |
| 30 | 49283 | Spring Arbor | MI | Zone 1 (High) | 40/100 |
| 31 | 49287 | Tipton | MI | Zone 1 (High) | 40/100 |
| 32 | 49289 | Weston | MI | Zone 1 (High) | 40/100 |
| 33 | 49240 | Grass Lake | MI | Zone 1 (High) | 41/100 |
| 34 | 49097 | Vicksburg | MI | Zone 1 (High) | 43/100 |
| 35 | 49031 | Cassopolis | MI | Zone 1 (High) | 44/100 |
| 36 | 49037 | Battle Creek | MI | Zone 1 (High) | 45/100 |
| 37 | 49254 | Michigan Center | MI | Zone 1 (High) | 45/100 |
| 38 | 49060 | Hickory Corners | MI | Zone 1 (High) | 47/100 |
| 39 | 49245 | Homer | MI | Zone 1 (High) | 48/100 |
| 40 | 48025 | Franklin | MI | Zone 1 (High) | 53/100 |
| 41 | 48139 | Hamburg | MI | Zone 1 (High) | 53/100 |
| 42 | 48143 | Lakeland | MI | Zone 1 (High) | 53/100 |
| 43 | 48191 | Willis | MI | Zone 1 (High) | 53/100 |
| 44 | 49029 | Burlington | MI | Zone 1 (High) | 53/100 |
| 45 | 49033 | Ceresco | MI | Zone 1 (High) | 53/100 |
| 46 | 49051 | East Leroy | MI | Zone 1 (High) | 53/100 |
| 47 | 49069 | Marshall | MI | Zone 1 (High) | 53/100 |
| 48 | 49083 | Richland | MI | Zone 1 (High) | 53/100 |
| 49 | 49130 | Union | MI | Zone 1 (High) | 53/100 |
| 50 | 49001 | Kalamazoo | MI | Zone 1 (High) | 54/100 |
| 51 | 49011 | Athens | MI | Zone 1 (High) | 54/100 |
| 52 | 49048 | Kalamazoo | MI | Zone 1 (High) | 54/100 |
| 53 | 49093 | Three Rivers | MI | Zone 1 (High) | 54/100 |
| 54 | 49220 | Addison | MI | Zone 1 (High) | 54/100 |
| 55 | 49229 | Britton | MI | Zone 1 (High) | 54/100 |
| 56 | 49236 | Clinton | MI | Zone 1 (High) | 54/100 |
| 57 | 49261 | Napoleon | MI | Zone 1 (High) | 54/100 |
| 58 | 49087 | Schoolcraft | MI | Zone 1 (High) | 55/100 |
| 59 | 49092 | Tekonsha | MI | Zone 1 (High) | 55/100 |
| 60 | 49269 | Parma | MI | Zone 1 (High) | 55/100 |
| 61 | 49276 | Riga | MI | Zone 1 (High) | 55/100 |
| 62 | 49282 | Somerset Center | MI | Zone 1 (High) | 55/100 |
| 63 | 49288 | Waldron | MI | Zone 1 (High) | 55/100 |
| 64 | 48118 | Chelsea | MI | Zone 1 (High) | 57/100 |
| 65 | 49040 | Colon | MI | Zone 1 (High) | 57/100 |
| 66 | 49012 | Augusta | MI | Zone 1 (High) | 58/100 |
| 67 | 49238 | Deerfield | MI | Zone 1 (High) | 58/100 |
| 68 | 49007 | Kalamazoo | MI | Zone 1 (High) | 59/100 |
| 69 | 49009 | Kalamazoo | MI | Zone 1 (High) | 59/100 |
| 70 | 49036 | Coldwater | MI | Zone 1 (High) | 59/100 |
| 71 | 49268 | Palmyra | MI | Zone 1 (High) | 59/100 |
| 72 | 48103 | Ann Arbor | MI | Zone 1 (High) | 60/100 |
| 73 | 48104 | Ann Arbor | MI | Zone 1 (High) | 60/100 |
| 74 | 49003 | Kalamazoo | MI | Zone 1 (High) | 60/100 |
| 75 | 49005 | Kalamazoo | MI | Zone 1 (High) | 60/100 |
| 76 | 49019 | Kalamazoo | MI | Zone 1 (High) | 60/100 |
| 77 | 49042 | Constantine | MI | Zone 1 (High) | 60/100 |
| 78 | 49068 | Marshall | MI | Zone 1 (High) | 60/100 |
| 79 | 48106 | Ann Arbor | MI | Zone 1 (High) | 61/100 |
| 80 | 48107 | Ann Arbor | MI | Zone 1 (High) | 61/100 |
| 81 | 48109 | Ann Arbor | MI | Zone 1 (High) | 61/100 |
| 82 | 48113 | Ann Arbor | MI | Zone 1 (High) | 61/100 |
| 83 | 49030 | Burr Oak | MI | Zone 1 (High) | 61/100 |
| 84 | 49072 | Mendon | MI | Zone 1 (High) | 61/100 |
| 85 | 49075 | Nottawa | MI | Zone 1 (High) | 61/100 |
| 86 | 49081 | Portage | MI | Zone 1 (High) | 61/100 |
| 87 | 49247 | Hudson | MI | Zone 1 (High) | 61/100 |
| 88 | 49094 | Union City | MI | Zone 1 (High) | 62/100 |
| 89 | 49252 | Litchfield | MI | Zone 1 (High) | 62/100 |
| 90 | 49203 | Jackson | MI | Zone 1 (High) | 63/100 |
| 91 | 49232 | Camden | MI | Zone 1 (High) | 63/100 |
| 92 | 48189 | Whitmore Lake | MI | Zone 1 (High) | 64/100 |
| 93 | 48197 | Ypsilanti | MI | Zone 1 (High) | 64/100 |
| 94 | 49004 | Kalamazoo | MI | Zone 1 (High) | 64/100 |
| 95 | 49006 | Kalamazoo | MI | Zone 1 (High) | 64/100 |
| 96 | 49008 | Kalamazoo | MI | Zone 1 (High) | 64/100 |
| 97 | 49047 | Dowagiac | MI | Zone 1 (High) | 64/100 |
| 98 | 49221 | Adrian | MI | Zone 1 (High) | 64/100 |
| 99 | 49230 | Brooklyn | MI | Zone 1 (High) | 64/100 |
| 100 | 49248 | Jasper | MI | Zone 1 (High) | 64/100 |
Methodology
Radon rankings are based on EPA county-level radon zone classifications. Zone 1 (highest risk) has predicted average indoor radon levels above 4 pCi/L — the EPA action level. Zone 2 is moderate (2-4 pCi/L) and Zone 3 is low (below 2 pCi/L). Within Zone 1, ZIP codes are sub-ranked by Home Safety Score to prioritize areas with compounding risk factors.
Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-06-04.
Frequently Asked Questions
What is EPA Radon Zone 1?
Zone 1 is the EPA highest-risk classification, meaning the county has predicted average indoor radon levels above 4 pCi/L — the level at which the EPA recommends mitigation. Radon causes about 21,000 lung cancer deaths per year in the U.S.
Should I test for radon?
The EPA recommends testing all homes regardless of radon zone. A DIY test kit costs $15-40. Professional testing costs $150-250. If levels exceed 4 pCi/L, mitigation systems ($800-2,500) can reduce radon by up to 99%.
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