Worst ZIP Codes for Homebuyers in Idaho — 2026

Out of 324 ZIP codes with data in Idaho, these are the highest-ranked areas for purchase risk. See also: National Worst ZIP Codes for Homebuyers — Hidden Risk Factors | All Idaho Rankings

Statistic	Value
ZIP codes ranked	324
Highest value	60/100
Median value	36/100
State	Idaho

Top 100 Worst ZIP Codes

Rank	ZIP Code	City	State	Purchase Risk	Safety Score
1	83546	Pierce	ID	60/100	41/100
2	83874	Murray	ID	59/100	59/100
3	83467	Salmon	ID	58/100	52/100
4	83520	Ahsahka	ID	56/100	62/100
5	83525	Elk City	ID	56/100	38/100
6	83535	Juliaetta	ID	56/100	12/100
7	83876	Worley	ID	56/100	59/100
8	83354	Sun Valley	ID	54/100	65/100
9	83438	Parker	ID	53/100	65/100
10	83633	King Hill	ID	53/100	33/100
11	83211	American Falls	ID	52/100	55/100
12	83353	Sun Valley	ID	52/100	64/100
13	83311	Albion	ID	51/100	81/100
14	83623	Glenns Ferry	ID	51/100	56/100
15	83701	Boise	ID	51/100	72/100
16	83346	Oakley	ID	50/100	78/100
17	83677	Yellow Pine	ID	50/100	52/100
18	83839	Kingston	ID	50/100	63/100
19	83855	Potlatch	ID	50/100	69/100
20	83213	Arco	ID	49/100	65/100
21	83624	Grand View	ID	49/100	79/100
22	83810	Cataldo	ID	49/100	63/100
23	83870	Tensed	ID	49/100	65/100
24	83655	New Plymouth	ID	48/100	67/100
25	83707	Boise	ID	48/100	72/100
26	83708	Boise	ID	48/100	72/100
27	83711	Boise	ID	48/100	72/100
28	83715	Boise	ID	48/100	72/100
29	83717	Boise	ID	48/100	72/100
30	83719	Boise	ID	48/100	72/100
31	83720	Boise	ID	48/100	72/100
32	83721	Boise	ID	48/100	72/100
33	83722	Boise	ID	48/100	72/100
34	83724	Boise	ID	48/100	72/100
35	83725	Boise	ID	48/100	72/100
36	83726	Boise	ID	48/100	72/100
37	83727	Boise	ID	48/100	72/100
38	83728	Boise	ID	48/100	72/100
39	83729	Boise	ID	48/100	72/100
40	83730	Boise	ID	48/100	72/100
41	83731	Boise	ID	48/100	72/100
42	83732	Boise	ID	48/100	72/100
43	83735	Boise	ID	48/100	72/100
44	83756	Boise	ID	48/100	72/100
45	83757	Boise	ID	48/100	72/100
46	83799	Boise	ID	48/100	72/100
47	83214	Arimo	ID	47/100	59/100
48	83303	Twin Falls	ID	47/100	72/100
49	83340	Ketchum	ID	47/100	44/100
50	83344	Murtaugh	ID	47/100	55/100
51	83403	Idaho Falls	ID	47/100	71/100
52	83405	Idaho Falls	ID	47/100	71/100
53	83415	Idaho Falls	ID	47/100	71/100
54	83631	Idaho City	ID	47/100	64/100
55	83702	Boise	ID	47/100	69/100
56	83705	Boise	ID	47/100	72/100
57	83544	Orofino	ID	46/100	52/100
58	83548	Reubens	ID	46/100	94/100
59	83844	Moscow	ID	46/100	65/100
60	83215	Atomic City	ID	45/100	82/100
61	83237	Franklin	ID	45/100	81/100
62	83271	Rockland	ID	45/100	81/100
63	83334	Hansen	ID	45/100	82/100
64	83619	Fruitland	ID	45/100	58/100
65	83638	Mccall	ID	45/100	58/100
66	83647	Mountain Home	ID	45/100	65/100
67	83704	Boise	ID	45/100	72/100
68	83263	Preston	ID	44/100	81/100
69	83328	Filer	ID	44/100	81/100
70	83348	Picabo	ID	44/100	62/100
71	83454	Ucon	ID	44/100	82/100
72	83526	Ferdinand	ID	44/100	64/100
73	83712	Boise	ID	44/100	74/100
74	83808	Calder	ID	44/100	70/100
75	83834	Harvard	ID	44/100	41/100
76	83837	Kellogg	ID	44/100	63/100
77	83843	Moscow	ID	44/100	64/100
78	83871	Troy	ID	44/100	65/100
79	83873	Wallace	ID	44/100	65/100
80	83226	Challis	ID	43/100	51/100
81	83241	Grace	ID	43/100	82/100
82	83253	May	ID	43/100	53/100
83	83314	Bliss	ID	43/100	60/100
84	83318	Burley	ID	43/100	77/100
85	83320	Carey	ID	43/100	64/100
86	83336	Heyburn	ID	43/100	78/100
87	83402	Idaho Falls	ID	43/100	73/100
88	83423	Dubois	ID	43/100	65/100
89	83441	Rexburg	ID	43/100	82/100
90	83460	Rexburg	ID	43/100	82/100
91	83639	Marsing	ID	43/100	79/100
92	83806	Bovill	ID	43/100	66/100
93	83864	Sandpoint	ID	43/100	64/100
94	83316	Buhl	ID	42/100	77/100
95	83327	Fairfield	ID	42/100	61/100
96	83401	Idaho Falls	ID	42/100	73/100
97	83404	Idaho Falls	ID	42/100	73/100
98	83536	Kamiah	ID	42/100	59/100
99	83802	Avery	ID	42/100	66/100
100	83803	Bayview	ID	42/100	68/100

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: 2026-04-13.

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.