Clasificaciones 2026

Códigos ZIP con mayor riesgo de radón en Wisconsin — 2026

Última actualización: 4 de junio de 2026

396 códigos postales clasificados por Radon Zone N.º 1: código postal 53039 (Juneau, WI) — Zone 1 (High)
Plomo Infracciones Puntuación más baja Más seguros Riesgo de inundación Costo de energía Radón PFAS Confiabilidad Índice EJ Riesgo para compradores CO y gas Gas más seguro Carga de remediación Infracciones sin resolver (por proveedor) Equidad del agua (por proveedor)

Out of 396 ZIP codes with data in Wisconsin, these are the lowest-ranked areas for radon zone. See also: National ZIP Codes with Highest Radon Risk | All Wisconsin Rankings

Statistic Value
ZIP codes ranked 396
Lowest value Zone 1 (High)
Median value Zone 1 (High)
State Wisconsin

100 Lowest-Ranked ZIP Codes

Rank ZIP Code City State Radon Zone Safety Score
1 53039 Juneau WI Zone 1 (High) 24/100
2 53094 Watertown WI Zone 1 (High) 28/100
3 53098 Watertown WI Zone 1 (High) 28/100
4 54645 Mount Sterling WI Zone 1 (High) 28/100
5 54404 Marshfield WI Zone 1 (High) 32/100
6 54472 Marshfield WI Zone 1 (High) 32/100
7 53538 Fort Atkinson WI Zone 1 (High) 34/100
8 53187 Waukesha WI Zone 1 (High) 36/100
9 53047 Lebanon WI Zone 1 (High) 40/100
10 53056 Merton WI Zone 1 (High) 40/100
11 53059 Neosho WI Zone 1 (High) 40/100
12 53072 Pewaukee WI Zone 1 (High) 40/100
13 53078 Rubicon WI Zone 1 (High) 40/100
14 53079 Saint Cloud WI Zone 1 (High) 40/100
15 53099 Woodland WI Zone 1 (High) 40/100
16 53127 Genesee Depot WI Zone 1 (High) 40/100
17 53137 Helenville WI Zone 1 (High) 40/100
18 53195 Zenda WI Zone 1 (High) 40/100
19 53235 Saint Francis WI Zone 1 (High) 40/100
20 53505 Avalon WI Zone 1 (High) 40/100
21 53542 Hanover WI Zone 1 (High) 40/100
22 53549 Jefferson WI Zone 1 (High) 40/100
23 53550 Juda WI Zone 1 (High) 40/100
24 53599 Woodford WI Zone 1 (High) 40/100
25 53827 Woodman WI Zone 1 (High) 40/100
26 53939 Kingston WI Zone 1 (High) 40/100
27 53942 Lime Ridge WI Zone 1 (High) 40/100
28 53956 Randolph WI Zone 1 (High) 40/100
29 53957 Randolph WI Zone 1 (High) 40/100
30 54010 East Ellsworth WI Zone 1 (High) 40/100
31 54135 Keshena WI Zone 1 (High) 40/100
32 54150 Neopit WI Zone 1 (High) 40/100
33 54182 Zachow WI Zone 1 (High) 40/100
34 54204 Brussels WI Zone 1 (High) 40/100
35 54211 Ephraim WI Zone 1 (High) 40/100
36 54407 Amherst Junction WI Zone 1 (High) 40/100
37 54408 Aniwa WI Zone 1 (High) 40/100
38 54413 Babcock WI Zone 1 (High) 40/100
39 54415 Blenker WI Zone 1 (High) 40/100
40 54417 Brokaw WI Zone 1 (High) 40/100
41 54418 Bryant WI Zone 1 (High) 40/100
42 54423 Custer WI Zone 1 (High) 40/100
43 54424 Deerbrook WI Zone 1 (High) 40/100
44 54427 Eland WI Zone 1 (High) 40/100
45 54429 Elderon WI Zone 1 (High) 40/100
46 54430 Elton WI Zone 1 (High) 40/100
47 54432 Galloway WI Zone 1 (High) 40/100
48 54458 Nelsonville WI Zone 1 (High) 40/100
49 54462 Pearson WI Zone 1 (High) 40/100
50 54463 Pelican Lake WI Zone 1 (High) 40/100
51 54464 Phlox WI Zone 1 (High) 40/100
52 54471 Ringle WI Zone 1 (High) 40/100
53 54475 Rudolph WI Zone 1 (High) 40/100
54 54485 Summit Lake WI Zone 1 (High) 40/100
55 54640 Lynxville WI Zone 1 (High) 40/100
56 54721 Arkansaw WI Zone 1 (High) 40/100
57 54743 Gilmanton WI Zone 1 (High) 40/100
58 54926 Big Falls WI Zone 1 (High) 40/100
59 54928 Caroline WI Zone 1 (High) 40/100
60 54932 Eldorado WI Zone 1 (High) 40/100
61 54960 Neshkoro WI Zone 1 (High) 40/100
62 54961 New London WI Zone 1 (High) 40/100
63 54962 Ogdensburg WI Zone 1 (High) 40/100
64 54964 Pickett WI Zone 1 (High) 40/100
65 54974 Rosendale WI Zone 1 (High) 40/100
66 54977 Scandinavia WI Zone 1 (High) 40/100
67 54978 Tilleda WI Zone 1 (High) 40/100
68 54979 Van Dyne WI Zone 1 (High) 40/100
69 53121 Elkhorn WI Zone 1 (High) 41/100
70 53186 Waukesha WI Zone 1 (High) 41/100
71 53188 Waukesha WI Zone 1 (High) 41/100
72 54945 Iola WI Zone 1 (High) 41/100
73 54990 Iola WI Zone 1 (High) 41/100
74 54411 Athens WI Zone 1 (High) 42/100
75 54482 Stevens Point WI Zone 1 (High) 42/100
76 54492 Stevens Point WI Zone 1 (High) 42/100
77 54935 Fond Du Lac WI Zone 1 (High) 42/100
78 53534 Edgerton WI Zone 1 (High) 43/100
79 53565 Mineral Point WI Zone 1 (High) 43/100
80 54449 Marshfield WI Zone 1 (High) 44/100
81 54971 Ripon WI Zone 1 (High) 44/100
82 53532 De Forest WI Zone 1 (High) 45/100
83 54624 De Soto WI Zone 1 (High) 45/100
84 54657 Steuben WI Zone 1 (High) 45/100
85 54769 Stockholm WI Zone 1 (High) 45/100
86 54940 Fremont WI Zone 1 (High) 45/100
87 53189 Waukesha WI Zone 1 (High) 46/100
88 53581 Richland Center WI Zone 1 (High) 46/100
89 54481 Stevens Point WI Zone 1 (High) 46/100
90 53545 Janesville WI Zone 1 (High) 47/100
91 54937 Fond Du Lac WI Zone 1 (High) 47/100
92 53029 Hartland WI Zone 1 (High) 48/100
93 53184 Walworth WI Zone 1 (High) 49/100
94 53547 Janesville WI Zone 1 (High) 49/100
95 54936 Fond Du Lac WI Zone 1 (High) 49/100
96 53090 West Bend WI Zone 1 (High) 51/100
97 53095 West Bend WI Zone 1 (High) 51/100
98 53190 Whitewater WI Zone 1 (High) 51/100
99 53115 Delavan WI Zone 1 (High) 52/100
100 53546 Janesville WI Zone 1 (High) 52/100

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%.

Explore More Rankings

Cómo se calcula esta clasificación, fuentes de datos y limitaciones: Metodología de clasificaciones →

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Aviso: Las clasificaciones se basan en datos de la EPA, la FEMA y agencias federales. Reflejan patrones históricos e indicadores de riesgo, no necesariamente las condiciones actuales. Para obtener la información más actual, los residentes pueden comunicarse con la compañía local de agua o solicitar un Informe de Confianza del Consumidor (CCR).

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