Highest Radon Risk ZIP Codes in Alabama — 2026

Out of 151 ZIP codes with data in Alabama, these are the lowest-ranked areas for radon zone. See also: National ZIP Codes with Highest Radon Risk | All Alabama Rankings

Statistic	Value
ZIP codes ranked	151
Lowest value	Zone 1 (High)
Median value	Zone 1 (High)
State	Alabama

100 Lowest-Ranked ZIP Codes

Rank	ZIP Code	City	State	Radon Zone	Safety Score
1	35032	Bon Air	AL	Zone 1 (High)	40/100
2	35183	Weogufka	AL	Zone 1 (High)	40/100
3	35585	Spruce Pine	AL	Zone 1 (High)	40/100
4	35610	Anderson	AL	Zone 1 (High)	40/100
5	35615	Belle Mina	AL	Zone 1 (High)	40/100
6	35617	Cloverdale	AL	Zone 1 (High)	40/100
7	35647	Lester	AL	Zone 1 (High)	40/100
8	35649	Mooresville	AL	Zone 1 (High)	40/100
9	35744	Dutton	AL	Zone 1 (High)	40/100
10	35745	Estillfork	AL	Zone 1 (High)	40/100
11	35746	Fackler	AL	Zone 1 (High)	40/100
12	35751	Hollytree	AL	Zone 1 (High)	40/100
13	35762	Normal	AL	Zone 1 (High)	40/100
14	35764	Paint Rock	AL	Zone 1 (High)	40/100
15	35767	Ryland	AL	Zone 1 (High)	40/100
16	35771	Section	AL	Zone 1 (High)	40/100
17	35774	Trenton	AL	Zone 1 (High)	40/100
18	35775	Valhermoso Springs	AL	Zone 1 (High)	40/100
19	35958	Bryant	AL	Zone 1 (High)	40/100
20	35966	Flat Rock	AL	Zone 1 (High)	40/100
21	35971	Fyffe	AL	Zone 1 (High)	40/100
22	35979	Higdon	AL	Zone 1 (High)	40/100
23	36026	Equality	AL	Zone 1 (High)	40/100
24	36253	Bynum	AL	Zone 1 (High)	40/100
25	36254	Choccolocco	AL	Zone 1 (High)	40/100
26	36255	Cragford	AL	Zone 1 (High)	40/100
27	36257	De Armanville	AL	Zone 1 (High)	40/100
28	36260	Eastaboga	AL	Zone 1 (High)	40/100
29	36262	Fruithurst	AL	Zone 1 (High)	40/100
30	36269	Muscadine	AL	Zone 1 (High)	40/100
31	35618	Courtland	AL	Zone 1 (High)	45/100
32	35741	Brownsboro	AL	Zone 1 (High)	45/100
33	35750	Hazel Green	AL	Zone 1 (High)	45/100
34	35754	Laceys Spring	AL	Zone 1 (High)	45/100
35	35768	Scottsboro	AL	Zone 1 (High)	45/100
36	35769	Scottsboro	AL	Zone 1 (High)	50/100
37	35619	Danville	AL	Zone 1 (High)	53/100
38	35620	Elkmont	AL	Zone 1 (High)	53/100
39	35643	Hillsboro	AL	Zone 1 (High)	53/100
40	35645	Killen	AL	Zone 1 (High)	53/100
41	35651	Mount Hope	AL	Zone 1 (High)	53/100
42	35677	Waterloo	AL	Zone 1 (High)	53/100
43	35742	Capshaw	AL	Zone 1 (High)	53/100
44	35752	Hollywood	AL	Zone 1 (High)	53/100
45	35759	Meridianville	AL	Zone 1 (High)	53/100
46	35761	New Market	AL	Zone 1 (High)	53/100
47	35766	Princeton	AL	Zone 1 (High)	53/100
48	35773	Toney	AL	Zone 1 (High)	53/100
49	35776	Woodville	AL	Zone 1 (High)	53/100
50	36258	Delta	AL	Zone 1 (High)	53/100
51	36279	Wellington	AL	Zone 1 (High)	53/100
52	35802	Huntsville	AL	Zone 1 (High)	55/100
53	35601	Decatur	AL	Zone 1 (High)	57/100
54	35660	Sheffield	AL	Zone 1 (High)	57/100
55	35634	Florence	AL	Zone 1 (High)	58/100
56	35046	Clanton	AL	Zone 1 (High)	60/100
57	35671	Tanner	AL	Zone 1 (High)	60/100
58	35757	Madison	AL	Zone 1 (High)	60/100
59	35758	Madison	AL	Zone 1 (High)	60/100
60	35763	Owens Cross Roads	AL	Zone 1 (High)	60/100
61	35801	Huntsville	AL	Zone 1 (High)	60/100
62	35803	Huntsville	AL	Zone 1 (High)	60/100
63	35072	Goodwater	AL	Zone 1 (High)	61/100
64	35749	Harvest	AL	Zone 1 (High)	61/100
65	35772	Stevenson	AL	Zone 1 (High)	61/100
66	36203	Oxford	AL	Zone 1 (High)	61/100
67	35603	Decatur	AL	Zone 1 (High)	62/100
68	35014	Alpine	AL	Zone 1 (High)	63/100
69	35611	Athens	AL	Zone 1 (High)	63/100
70	35613	Athens	AL	Zone 1 (High)	63/100
71	35630	Florence	AL	Zone 1 (High)	63/100
72	35674	Tuscumbia	AL	Zone 1 (High)	63/100
73	35699	Decatur	AL	Zone 1 (High)	63/100
74	35082	Hollins	AL	Zone 1 (High)	64/100
75	35160	Talladega	AL	Zone 1 (High)	64/100
76	35612	Athens	AL	Zone 1 (High)	64/100
77	35631	Florence	AL	Zone 1 (High)	64/100
78	35632	Florence	AL	Zone 1 (High)	64/100
79	35648	Lexington	AL	Zone 1 (High)	64/100
80	35650	Moulton	AL	Zone 1 (High)	64/100
81	35661	Muscle Shoals	AL	Zone 1 (High)	64/100
82	35740	Bridgeport	AL	Zone 1 (High)	64/100
83	36261	Edwardsville	AL	Zone 1 (High)	64/100
84	35044	Childersburg	AL	Zone 1 (High)	65/100
85	35150	Sylacauga	AL	Zone 1 (High)	65/100
86	35161	Talladega	AL	Zone 1 (High)	65/100
87	35640	Hartselle	AL	Zone 1 (High)	65/100
88	35646	Leighton	AL	Zone 1 (High)	65/100
89	35662	Muscle Shoals	AL	Zone 1 (High)	65/100
90	35672	Town Creek	AL	Zone 1 (High)	65/100
91	35756	Madison	AL	Zone 1 (High)	65/100
92	35760	New Hope	AL	Zone 1 (High)	65/100
93	35805	Huntsville	AL	Zone 1 (High)	65/100
94	35806	Huntsville	AL	Zone 1 (High)	65/100
95	35810	Huntsville	AL	Zone 1 (High)	65/100
96	35811	Huntsville	AL	Zone 1 (High)	65/100
97	35816	Huntsville	AL	Zone 1 (High)	65/100
98	36206	Anniston	AL	Zone 1 (High)	65/100
99	36207	Anniston	AL	Zone 1 (High)	65/100
100	36266	Lineville	AL	Zone 1 (High)	65/100

Methodology

Radon rankings are based on EPA county-level radon zone classifications. Zone 1 (highest risk) has predicted average indoor radon levels above 4 pCi/L — the EPA action level. Zone 2 is moderate (2-4 pCi/L) and Zone 3 is low (below 2 pCi/L). Within Zone 1, ZIP codes are sub-ranked by Home Safety Score to prioritize areas with compounding risk factors.

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

What is EPA Radon Zone 1?

Zone 1 is the EPA highest-risk classification, meaning the county has predicted average indoor radon levels above 4 pCi/L — the level at which the EPA recommends mitigation. Radon causes about 21,000 lung cancer deaths per year in the U.S.

Should I test for radon?

The EPA recommends testing all homes regardless of radon zone. A DIY test kit costs $15-40. Professional testing costs $150-250. If levels exceed 4 pCi/L, mitigation systems ($800-2,500) can reduce radon by up to 99%.