2026 Rankings

Worst ZIP Codes for Homebuyers in Wisconsin — 2026

Last updated: June 4, 2026

898 ZIP codes ranked by Purchase Risk #1: ZIP 53706 (Madison, WI) — 67/100
Lead Violations Lowest Score Safest Flood Risk Energy Cost Radon PFAS Reliability EJ Index Homebuyer Risk CO & Gas Safest Gas Remediation Burden Unresolved Violations (by Utility) Water Equity (by Utility)

Out of 898 ZIP codes with data in Wisconsin, these are the highest-ranked areas for purchase risk. See also: National Worst ZIP Codes for Homebuyers — Hidden Risk Factors | All Wisconsin Rankings

Statistic Value
ZIP codes ranked 898
Highest value 67/100
Median value 37/100
State Wisconsin

Top 100 Worst ZIP Codes

Rank ZIP Code City State Purchase Risk Safety Score
1 53706 Madison WI 67/100 59/100
2 54631 Gays Mills WI 67/100 59/100
3 54652 Readstown WI 66/100 60/100
4 53522 Browntown WI 64/100 65/100
5 53549 Jefferson WI 64/100 40/100
6 54625 Dodge WI 62/100 55/100
7 53094 Watertown WI 61/100 28/100
8 53168 Salem WI 61/100 63/100
9 53962 Union Center WI 61/100 83/100
10 53122 Elm Grove WI 60/100 59/100
11 53538 Fort Atkinson WI 60/100 34/100
12 54638 Kendall WI 60/100 72/100
13 54645 Mount Sterling WI 60/100 28/100
14 54759 Pepin WI 60/100 59/100
15 53170 Silver Lake WI 59/100 70/100
16 53176 Springfield WI 59/100 53/100
17 53534 Edgerton WI 59/100 43/100
18 53806 Cassville WI 59/100 64/100
19 54935 Fond Du Lac WI 59/100 42/100
20 53187 Waukesha WI 58/100 36/100
21 53218 Milwaukee WI 58/100 65/100
22 53957 Randolph WI 58/100 40/100
23 54492 Stevens Point WI 58/100 42/100
24 53209 Milwaukee WI 57/100 65/100
25 53726 Madison WI 57/100 59/100
26 54902 Oshkosh WI 57/100 50/100
27 53157 Pell Lake WI 56/100 54/100
28 53404 Racine WI 56/100 75/100
29 53581 Richland Center WI 56/100 46/100
30 53941 La Valle WI 56/100 76/100
31 53955 Poynette WI 56/100 61/100
32 54409 Antigo WI 56/100 56/100
33 53213 Milwaukee WI 55/100 70/100
34 53233 Milwaukee WI 55/100 80/100
35 53545 Janesville WI 55/100 47/100
36 53702 Madison WI 55/100 59/100
37 53707 Madison WI 55/100 59/100
38 53708 Madison WI 55/100 59/100
39 53725 Madison WI 55/100 59/100
40 53744 Madison WI 55/100 59/100
41 53774 Madison WI 55/100 59/100
42 53777 Madison WI 55/100 59/100
43 53778 Madison WI 55/100 59/100
44 53779 Madison WI 55/100 59/100
45 53782 Madison WI 55/100 59/100
46 53783 Madison WI 55/100 59/100
47 53784 Madison WI 55/100 59/100
48 53785 Madison WI 55/100 59/100
49 53786 Madison WI 55/100 59/100
50 53788 Madison WI 55/100 59/100
51 53789 Madison WI 55/100 59/100
52 53790 Madison WI 55/100 59/100
53 53791 Madison WI 55/100 59/100
54 53792 Madison WI 55/100 59/100
55 53793 Madison WI 55/100 59/100
56 53794 Madison WI 55/100 59/100
57 54014 Hager City WI 55/100 60/100
58 53039 Juneau WI 54/100 24/100
59 53130 Hales Corners WI 54/100 74/100
60 53713 Madison WI 54/100 59/100
61 53715 Madison WI 54/100 64/100
62 54481 Stevens Point WI 54/100 46/100
63 54495 Wisconsin Rapids WI 54/100 57/100
64 54632 Genoa WI 54/100 54/100
65 54651 Ontario WI 54/100 69/100
66 54667 Westby WI 54/100 63/100
67 53050 Mayville WI 53/100 53/100
68 53167 Rochester WI 53/100 81/100
69 53206 Milwaukee WI 53/100 80/100
70 53548 Janesville WI 53/100 52/100
71 53701 Madison WI 53/100 59/100
72 53714 Madison WI 53/100 64/100
73 53956 Randolph WI 53/100 40/100
74 53961 Rock Springs WI 53/100 78/100
75 54664 Viola WI 53/100 63/100
76 54806 Ashland WI 53/100 45/100
77 53098 Watertown WI 52/100 28/100
78 53143 Kenosha WI 52/100 69/100
79 53506 Avoca WI 52/100 68/100
80 53588 Spring Green WI 52/100 64/100
81 53716 Madison WI 52/100 59/100
82 53821 Prairie Du Chien WI 52/100 59/100
83 53924 Cazenovia WI 52/100 69/100
84 53118 Dousman WI 51/100 63/100
85 53140 Kenosha WI 51/100 69/100
86 53141 Kenosha WI 51/100 69/100
87 53186 Waukesha WI 51/100 41/100
88 53208 Milwaukee WI 51/100 75/100
89 53216 Milwaukee WI 51/100 70/100
90 53515 Black Earth WI 51/100 64/100
91 53541 Gratiot WI 51/100 65/100
92 53563 Milton WI 51/100 64/100
93 53569 Montfort WI 51/100 64/100
94 53585 Sharon WI 51/100 65/100
95 54403 Wausau WI 51/100 67/100
96 54486 Tigerton WI 51/100 65/100
97 54634 Hillsboro WI 51/100 62/100
98 54733 Dallas WI 51/100 82/100
99 54766 Sheldon WI 51/100 79/100
100 54871 Shell Lake WI 51/100 77/100

Methodology

The Home Purchase Risk Score combines environmental hazards that create unexpected costs for homebuyers: water system violations requiring filtration, lead service lines requiring replacement, radon requiring mitigation systems, flood zones requiring insurance, and aging infrastructure requiring upgrades. These are factors that standard home inspections may not fully capture.

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 the Home Purchase Risk Score?

This score (0-100) estimates the hidden environmental costs a homebuyer may face: water filtration needs, lead pipe replacement, radon mitigation, flood insurance, and infrastructure upgrades. Higher scores mean more potential unexpected expenses after purchase.

What should homebuyers do in high-risk ZIP codes?

Request a water quality test, check for lead service lines with the utility, test for radon before closing, verify FEMA flood zone designation, and factor in potential remediation costs ($5,000-$30,000+) to your budget.

Explore More Rankings

How this ranking is calculated, data sources, and limitations: Rankings Methodology →

Related Rankings

Water Safety 2026 EPA violations and water quality scores Lead Risk 2026 Lead pipe infrastructure and EPA exceedances Infrastructure 2026 Aging pipes, system age and remediation costs
Disclaimer: Rankings are based on EPA, FEMA, and federal agency data. They reflect historical patterns and risk indicators, not necessarily current conditions. For the most current information, contact your local water utility or request a Consumer Confidence Report.

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