2026 Rankings

Worst ZIP Codes for Homebuyers in South Dakota — 2026

Last updated: April 13, 2026

392 ZIP codes ranked by Purchase Risk #1: ZIP 57361 (Marty, SD) - 63/100
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 392 ZIP codes with data in South Dakota, these are the highest-ranked areas for purchase risk. See also: National Worst ZIP Codes for Homebuyers — Hidden Risk Factors | All South Dakota Rankings

Statistic Value
ZIP codes ranked 392
Highest value 63/100
Median value 37/100
State South Dakota

Top 100 Worst ZIP Codes

Rank ZIP Code City State Purchase Risk Safety Score
1 57361 Marty SD 63/100 53/100
2 57243 Henry SD 59/100 66/100
3 57421 Amherst SD 59/100 53/100
4 57646 Mound City SD 58/100 53/100
5 57046 Mission Hill SD 57/100 63/100
6 57105 Sioux Falls SD 57/100 56/100
7 57568 Presho SD 57/100 68/100
8 57645 Morristown SD 57/100 69/100
9 57234 Estelline SD 56/100 59/100
10 57424 Ashton SD 56/100 45/100
11 57223 Castlewood SD 55/100 59/100
12 57261 Roslyn SD 55/100 70/100
13 57266 Summit SD 55/100 57/100
14 57272 Wallace SD 55/100 67/100
15 57401 Aberdeen SD 55/100 49/100
16 57440 Frankfort SD 54/100 69/100
17 57474 Stratford SD 54/100 67/100
18 57260 Rosholt SD 53/100 68/100
19 57273 Waubay SD 53/100 55/100
20 57448 Hosmer SD 53/100 61/100
21 57722 Buffalo Gap SD 53/100 77/100
22 57544 Kennebec SD 52/100 53/100
23 57021 Davis SD 51/100 45/100
24 57051 Oldham SD 51/100 53/100
25 57219 Bristol SD 51/100 65/100
26 57271 Vienna SD 51/100 53/100
27 57434 Conde SD 51/100 69/100
28 57446 Hecla SD 51/100 69/100
29 57456 Leola SD 51/100 61/100
30 57048 Montrose SD 50/100 63/100
31 57065 Trent SD 50/100 64/100
32 57104 Sioux Falls SD 50/100 56/100
33 57217 Bradley SD 50/100 53/100
34 57366 Parkston SD 50/100 69/100
35 57369 Platte SD 50/100 45/100
36 57373 Saint Lawrence SD 50/100 53/100
37 57735 Edgemont SD 50/100 76/100
38 57028 Flandreau SD 49/100 64/100
39 57042 Madison SD 49/100 55/100
40 57314 Artesian SD 49/100 61/100
41 57334 Ethan SD 49/100 70/100
42 57059 Scotland SD 48/100 65/100
43 57239 Grenville SD 48/100 68/100
44 57321 Canova SD 48/100 62/100
45 57322 Carpenter SD 48/100 44/100
46 57632 Herreid SD 48/100 65/100
47 57001 Alcester SD 47/100 67/100
48 57016 Chester SD 47/100 45/100
49 57078 Yankton SD 47/100 64/100
50 57315 Avon SD 47/100 58/100
51 57469 Redfield SD 47/100 63/100
52 57038 Jefferson SD 46/100 60/100
53 57263 South Shore SD 46/100 48/100
54 57279 Wilmot SD 46/100 65/100
55 57317 Bonesteel SD 46/100 83/100
56 57350 Huron SD 46/100 62/100
57 57355 Kimball SD 46/100 64/100
58 57452 Java SD 46/100 64/100
59 57013 Canton SD 45/100 65/100
60 57040 Lesterville SD 45/100 56/100
61 57075 Wentworth SD 45/100 45/100
62 57212 Arlington SD 45/100 60/100
63 57216 Big Stone City SD 45/100 64/100
64 57235 Florence SD 45/100 68/100
65 57236 Garden City SD 45/100 64/100
66 57248 Lake Norden SD 45/100 60/100
67 57276 White SD 45/100 65/100
68 57311 Alexandria SD 45/100 69/100
69 57381 Wessington SD 45/100 65/100
70 57445 Groton SD 45/100 63/100
71 57481 Westport SD 45/100 55/100
72 57522 Blunt SD 45/100 45/100
73 57744 Hermosa SD 45/100 69/100
74 57070 Viborg SD 44/100 69/100
75 57330 Delmont SD 44/100 65/100
76 57432 Claremont SD 44/100 53/100
77 57437 Eureka SD 44/100 66/100
78 57477 Turton SD 44/100 53/100
79 57534 Hamill SD 44/100 40/100
80 57762 Nisland SD 44/100 73/100
81 57788 Vale SD 44/100 82/100
82 57053 Parker SD 43/100 70/100
83 57073 Wakonda SD 43/100 65/100
84 57237 Gary SD 43/100 65/100
85 57241 Hayti SD 43/100 70/100
86 57278 Willow Lake SD 43/100 70/100
87 57349 Howard SD 43/100 62/100
88 57363 Mount Vernon SD 43/100 68/100
89 57382 Wessington Springs SD 43/100 62/100
90 57385 Woonsocket SD 43/100 66/100
91 57574 Tuthill SD 43/100 53/100
92 57579 White River SD 43/100 82/100
93 57620 Bison SD 43/100 64/100
94 57625 Eagle Butte SD 43/100 82/100
95 57027 Fairview SD 42/100 40/100
96 57062 Springfield SD 42/100 65/100
97 57063 Tabor SD 42/100 68/100

Methodology

The Home Purchase Risk Score combines area indicators that may lead to added costs for homebuyers: water system violation records, lead service line indicators, county radon potential, flood zones and housing age. An indicator does not mean a home needs filtration, mitigation, insurance or upgrades; a home test or inspection decides that. 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: 2026-04-13.

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 service-line indicators and system-level action-level 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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