ZIP Codes with Highest Flood Risk in South Dakota

Out of 160 ZIP codes with data in South Dakota, these are the highest-ranked areas for flood claims. See also: National ZIP Codes with Highest Flood Risk | All South Dakota Rankings

Statistic	Value
ZIP codes ranked	160
Highest value	462 claims
Median value	5 claims
State	South Dakota

Top 100 Worst ZIP Codes

Rank	ZIP Code	City	State	Flood Claims	Safety Score
1	57201	Watertown	SD	462 claims	55/100
2	57401	Aberdeen	SD	425 claims	49/100
3	57049	North Sioux City	SD	362 claims	55/100
4	57273	Waubay	SD	227 claims	55/100
5	57042	Madison	SD	226 claims	55/100
6	57212	Arlington	SD	120 claims	60/100
7	57532	Fort Pierre	SD	118 claims	60/100
8	57234	Estelline	SD	115 claims	59/100
9	57105	Sioux Falls	SD	109 claims	56/100
10	57223	Castlewood	SD	85 claims	59/100
11	57248	Lake Norden	SD	83 claims	60/100
12	57104	Sioux Falls	SD	75 claims	56/100
13	57006	Brookings	SD	67 claims	49/100
14	57038	Jefferson	SD	66 claims	60/100
15	57022	Dell Rapids	SD	65 claims	60/100
16	57055	Renner	SD	64 claims	40/100
17	57501	Pierre	SD	63 claims	60/100
18	57078	Yankton	SD	48 claims	64/100
19	57075	Wentworth	SD	45 claims	45/100
20	57702	Rapid City	SD	43 claims	76/100
21	57106	Sioux Falls	SD	40 claims	61/100
22	57216	Big Stone City	SD	38 claims	64/100
23	57469	Redfield	SD	33 claims	63/100
24	57103	Sioux Falls	SD	32 claims	61/100
25	57301	Mitchell	SD	32 claims	65/100
26	57701	Rapid City	SD	32 claims	76/100
27	57065	Trent	SD	28 claims	64/100
28	57424	Ashton	SD	27 claims	45/100
29	57719	Box Elder	SD	27 claims	66/100
30	57730	Custer	SD	27 claims	78/100
31	57783	Spearfish	SD	26 claims	74/100
32	57522	Blunt	SD	25 claims	45/100
33	57744	Hermosa	SD	25 claims	69/100
34	57350	Huron	SD	23 claims	62/100
35	57048	Montrose	SD	21 claims	63/100
36	57028	Flandreau	SD	19 claims	64/100
37	57703	Rapid City	SD	19 claims	76/100
38	57220	Bruce	SD	18 claims	45/100
39	57274	Webster	SD	18 claims	65/100
40	57021	Davis	SD	17 claims	45/100
41	57252	Milbank	SD	17 claims	65/100
42	57016	Chester	SD	16 claims	45/100
43	57249	Lake Preston	SD	15 claims	60/100
44	57025	Elk Point	SD	14 claims	65/100
45	57445	Groton	SD	14 claims	63/100
46	57544	Kennebec	SD	14 claims	53/100
47	57108	Sioux Falls	SD	13 claims	61/100
48	57481	Westport	SD	13 claims	55/100
49	57717	Belle Fourche	SD	13 claims	75/100
50	57005	Brandon	SD	12 claims	64/100
51	57013	Canton	SD	11 claims	65/100
52	57046	Mission Hill	SD	11 claims	63/100
53	57107	Sioux Falls	SD	11 claims	61/100
54	57785	Sturgis	SD	11 claims	77/100
55	57068	Valley Springs	SD	10 claims	70/100
56	57241	Hayti	SD	10 claims	70/100
57	57260	Rosholt	SD	10 claims	68/100
58	57279	Wilmot	SD	10 claims	65/100
59	57732	Deadwood	SD	10 claims	83/100
60	57769	Piedmont	SD	10 claims	81/100
61	57010	Burbank	SD	9 claims	53/100
62	57032	Harrisburg	SD	9 claims	70/100
63	57262	Sisseton	SD	9 claims	70/100
64	57003	Baltic	SD	8 claims	68/100
65	57071	Volga	SD	8 claims	70/100
66	57441	Frederick	SD	8 claims	70/100
67	57745	Hill City	SD	8 claims	83/100
68	57231	De Smet	SD	7 claims	70/100
69	57239	Grenville	SD	7 claims	68/100
70	57314	Artesian	SD	7 claims	61/100
71	57366	Parkston	SD	7 claims	69/100
72	57045	Menno	SD	6 claims	68/100
73	57053	Parker	SD	6 claims	70/100
74	57200	Brookings County	SD	6 claims	—
75	57227	Corona	SD	6 claims	66/100
76	57311	Alexandria	SD	6 claims	69/100
77	57370	Pukwana	SD	6 claims	53/100
78	57373	Saint Lawrence	SD	6 claims	53/100
79	57446	Hecla	SD	6 claims	69/100
80	57058	Salem	SD	5 claims	45/100
81	57235	Florence	SD	5 claims	68/100
82	57363	Mount Vernon	SD	5 claims	68/100
83	57402	Aberdeen	SD	5 claims	64/100
84	57430	Britton	SD	5 claims	69/100
85	57451	Ipswich	SD	5 claims	69/100
86	57069	Vermillion	SD	4 claims	70/100
87	57217	Bradley	SD	4 claims	53/100
88	57225	Clark	SD	4 claims	70/100
89	57261	Roslyn	SD	4 claims	70/100
90	57272	Wallace	SD	4 claims	67/100
91	57356	Lake Andes	SD	4 claims	66/100
92	57361	Marty	SD	4 claims	53/100
93	57385	Woonsocket	SD	4 claims	66/100
94	57432	Claremont	SD	4 claims	53/100
95	57433	Columbia	SD	4 claims	53/100
96	57461	Mellette	SD	4 claims	53/100
97	57474	Stratford	SD	4 claims	67/100
98	57555	Mission	SD	4 claims	63/100
99	57564	Onida	SD	4 claims	70/100
100	57751	Keystone	SD	4 claims	83/100

Methodology

Flood risk rankings use FEMA National Flood Insurance Program (NFIP) claim data. Total claims reflect historical flood events that resulted in insured property damage. High claim counts indicate areas with recurring flood exposure, which can compromise water infrastructure, introduce contaminant runoff, and damage home systems.

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

Why does flood history matter for home safety?

Flooding can contaminate drinking water supplies, damage water infrastructure, introduce sewage and chemical runoff, and compromise home foundations and electrical systems. Repeated flooding indicates persistent risk that affects long-term home safety.

Where does the flood data come from?

Flood claim data comes from the FEMA National Flood Insurance Program (NFIP), which tracks all insured flood losses by ZIP code. This includes claims from hurricanes, river flooding, storm surge, and heavy rainfall events.

ZIP Codes with Highest Flood Risk in South Dakota — ...

Top 100 Worst ZIP Codes

Methodology

Frequently Asked Questions

Why does flood history matter for home safety?

Where does the flood data come from?

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