ZIP Codes with Highest Flood Risk in Idaho

Out of 116 ZIP codes with data in Idaho, these are the highest-ranked areas for flood claims. See also: National ZIP Codes with Highest Flood Risk | All Idaho Rankings

Statistic	Value
ZIP codes ranked	116
Highest value	148 claims
Median value	3 claims
State	Idaho

Top 100 Worst ZIP Codes

Rank	ZIP Code	City	State	Flood Claims	Safety Score
1	83340	Ketchum	ID	148 claims	44/100
2	83333	Hailey	ID	135 claims	56/100
3	83843	Moscow	ID	48 claims	64/100
4	83839	Kingston	ID	46 claims	63/100
5	83814	Coeur D Alene	ID	40 claims	65/100
6	83861	Saint Maries	ID	37 claims	45/100
7	83702	Boise	ID	36 claims	69/100
8	83616	Eagle	ID	29 claims	68/100
9	83714	Garden City	ID	21 claims	56/100
10	83864	Sandpoint	ID	21 claims	64/100
11	83221	Blackfoot	ID	19 claims	75/100
12	83672	Weiser	ID	18 claims	80/100
13	83810	Cataldo	ID	18 claims	63/100
14	83873	Wallace	ID	18 claims	65/100
15	83837	Kellogg	ID	17 claims	63/100
16	83301	Twin Falls	ID	16 claims	69/100
17	83467	Salmon	ID	16 claims	52/100
18	83661	Payette	ID	16 claims	76/100
19	83833	Harrison	ID	15 claims	64/100
20	83204	Pocatello	ID	13 claims	78/100
21	83353	Sun Valley	ID	13 claims	64/100
22	83201	Pocatello	ID	11 claims	78/100
23	83245	Inkom	ID	11 claims	75/100
24	83644	Middleton	ID	11 claims	74/100
25	83706	Boise	ID	11 claims	69/100
26	83313	Bellevue	ID	10 claims	62/100
27	83655	New Plymouth	ID	10 claims	67/100
28	83803	Bayview	ID	10 claims	68/100
29	83647	Mountain Home	ID	9 claims	65/100
30	83709	Boise	ID	9 claims	74/100
31	83236	Firth	ID	8 claims	83/100
32	83440	Rexburg	ID	8 claims	82/100
33	83703	Boise	ID	8 claims	74/100
34	83712	Boise	ID	8 claims	74/100
35	83850	Pinehurst	ID	8 claims	70/100
36	83860	Sagle	ID	8 claims	68/100
37	83402	Idaho Falls	ID	7 claims	73/100
38	83404	Idaho Falls	ID	7 claims	73/100
39	83835	Hayden	ID	7 claims	68/100
40	83544	Orofino	ID	6 claims	52/100
41	83442	Rigby	ID	5 claims	73/100
42	83501	Lewiston	ID	5 claims	94/100
43	83660	Parma	ID	5 claims	69/100
44	83352	Shoshone	ID	4 claims	83/100
45	83420	Ashton	ID	4 claims	69/100
46	83617	Emmett	ID	4 claims	94/100
47	83645	Midvale	ID	4 claims	73/100
48	83646	Meridian	ID	4 claims	75/100
49	83669	Star	ID	4 claims	79/100
50	83687	Nampa	ID	4 claims	77/100
51	83855	Potlatch	ID	4 claims	69/100
52	83274	Shelley	ID	3 claims	74/100
53	83330	Gooding	ID	3 claims	66/100
54	83350	Rupert	ID	3 claims	73/100
55	83406	Idaho Falls	ID	3 claims	73/100
56	83434	Menan	ID	3 claims	63/100
57	83444	Roberts	ID	3 claims	80/100
58	83462	Carmen	ID	3 claims	53/100
59	83530	Grangeville	ID	3 claims	65/100
60	83686	Nampa	ID	3 claims	77/100
61	83805	Bonners Ferry	ID	3 claims	68/100
62	83808	Calder	ID	3 claims	70/100
63	83816	Coeur D Alene	ID	3 claims	70/100
64	83202	Pocatello	ID	2 claims	83/100
65	83311	Albion	ID	2 claims	81/100
66	83336	Heyburn	ID	2 claims	78/100
67	83401	Idaho Falls	ID	2 claims	73/100
68	83422	Driggs	ID	2 claims	81/100
69	83429	Island Park	ID	2 claims	53/100
70	83431	Lewisville	ID	2 claims	63/100
71	83452	Tetonia	ID	2 claims	81/100
72	83466	North Fork	ID	2 claims	53/100
73	83546	Pierce	ID	2 claims	41/100
74	83607	Caldwell	ID	2 claims	65/100
75	83612	Council	ID	2 claims	87/100
76	83623	Glenns Ferry	ID	2 claims	56/100
77	83651	Nampa	ID	2 claims	77/100
78	83654	New Meadows	ID	2 claims	89/100
79	83849	Osburn	ID	2 claims	53/100
80	83856	Priest River	ID	2 claims	66/100
81	83858	Rathdrum	ID	2 claims	66/100
82	83867	Silverton	ID	2 claims	53/100
83	83214	Arimo	ID	1 claims	59/100
84	83251	Mackay	ID	1 claims	70/100
85	83252	Malad City	ID	1 claims	63/100
86	83253	May	ID	1 claims	53/100
87	83262	Pingree	ID	1 claims	63/100
88	83263	Preston	ID	1 claims	81/100
89	83276	Soda Springs	ID	1 claims	77/100
90	83281	Swanlake	ID	1 claims	63/100
91	83338	Jerome	ID	1 claims	82/100
92	83355	Wendell	ID	1 claims	70/100
93	83435	Monteview	ID	1 claims	81/100
94	83445	Saint Anthony	ID	1 claims	53/100
95	83448	Sugar City	ID	1 claims	81/100
96	83450	Terreton	ID	1 claims	63/100
97	83469	Shoup	ID	1 claims	53/100
98	83536	Kamiah	ID	1 claims	59/100
99	83537	Kendrick	ID	1 claims	70/100
100	83545	Peck	ID	1 claims	91/100

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 Idaho — 2026

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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