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	83438	Parker	ID	53/100	65/100
9	83633	King Hill	ID	53/100	33/100
10	83211	American Falls	ID	52/100	55/100
11	83353	Sun Valley	ID	52/100	64/100
12	83311	Albion	ID	51/100	81/100
13	83623	Glenns Ferry	ID	51/100	56/100
14	83346	Oakley	ID	50/100	78/100
15	83677	Yellow Pine	ID	50/100	52/100
16	83839	Kingston	ID	50/100	63/100
17	83855	Potlatch	ID	50/100	69/100
18	83213	Arco	ID	49/100	65/100
19	83624	Grand View	ID	49/100	79/100
20	83810	Cataldo	ID	49/100	63/100
21	83870	Tensed	ID	49/100	65/100
22	83655	New Plymouth	ID	48/100	67/100
23	83214	Arimo	ID	47/100	59/100
24	83340	Ketchum	ID	47/100	44/100
25	83344	Murtaugh	ID	47/100	55/100
26	83631	Idaho City	ID	47/100	64/100
27	83702	Boise	ID	47/100	69/100
28	83705	Boise	ID	47/100	72/100
29	83544	Orofino	ID	46/100	52/100
30	83548	Reubens	ID	46/100	94/100
31	83844	Moscow	ID	46/100	65/100
32	83237	Franklin	ID	45/100	81/100
33	83271	Rockland	ID	45/100	81/100
34	83334	Hansen	ID	45/100	82/100
35	83619	Fruitland	ID	45/100	58/100
36	83638	Mccall	ID	45/100	58/100
37	83647	Mountain Home	ID	45/100	65/100
38	83704	Boise	ID	45/100	72/100
39	83263	Preston	ID	44/100	81/100
40	83328	Filer	ID	44/100	81/100
41	83348	Picabo	ID	44/100	62/100
42	83454	Ucon	ID	44/100	82/100
43	83526	Ferdinand	ID	44/100	64/100
44	83712	Boise	ID	44/100	74/100
45	83808	Calder	ID	44/100	70/100
46	83834	Harvard	ID	44/100	41/100
47	83837	Kellogg	ID	44/100	63/100
48	83843	Moscow	ID	44/100	64/100
49	83871	Troy	ID	44/100	65/100
50	83873	Wallace	ID	44/100	65/100
51	83226	Challis	ID	43/100	51/100
52	83241	Grace	ID	43/100	82/100
53	83253	May	ID	43/100	53/100
54	83314	Bliss	ID	43/100	60/100
55	83318	Burley	ID	43/100	77/100
56	83320	Carey	ID	43/100	64/100
57	83336	Heyburn	ID	43/100	78/100
58	83402	Idaho Falls	ID	43/100	73/100
59	83423	Dubois	ID	43/100	65/100
60	83639	Marsing	ID	43/100	79/100
61	83806	Bovill	ID	43/100	66/100
62	83864	Sandpoint	ID	43/100	64/100
63	83316	Buhl	ID	42/100	77/100
64	83327	Fairfield	ID	42/100	61/100
65	83401	Idaho Falls	ID	42/100	73/100
66	83404	Idaho Falls	ID	42/100	73/100
67	83536	Kamiah	ID	42/100	59/100
68	83802	Avery	ID	42/100	66/100
69	83803	Bayview	ID	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.