EPA Radon Zone 1 ZIP Codes in Georgia - 2026

Out of 147 ZIP codes with data in Georgia, these are mapped to counties in EPA Radon Zone 1. See also: National ZIP Codes in EPA Radon Zone 1 | All Georgia Rankings

Statistic	Value
ZIP codes ranked	147
Lowest value	Zone 1 (highest potential)
Median value	Zone 1 (highest potential)
State	Georgia

ZIP Codes in EPA Radon Zone 1

Rank	ZIP Code	City	State	Radon Zone	Safety Score
1	30213	Fairburn	GA	Zone 1 (highest potential)	40/100
2	30344	Atlanta	GA	Zone 1 (highest potential)	41/100
3	30519	Buford	GA	Zone 1 (highest potential)	46/100
4	30354	Atlanta	GA	Zone 1 (highest potential)	47/100
5	30127	Powder Springs	GA	Zone 1 (highest potential)	49/100
6	30349	Atlanta	GA	Zone 1 (highest potential)	50/100
7	30268	Palmetto	GA	Zone 1 (highest potential)	53/100
8	30291	Union City	GA	Zone 1 (highest potential)	57/100
9	30337	Atlanta	GA	Zone 1 (highest potential)	59/100
10	30093	Norcross	GA	Zone 1 (highest potential)	60/100
11	30518	Buford	GA	Zone 1 (highest potential)	63/100
12	30315	Atlanta	GA	Zone 1 (highest potential)	64/100
13	30071	Norcross	GA	Zone 1 (highest potential)	65/100
14	30096	Duluth	GA	Zone 1 (highest potential)	65/100
15	30310	Atlanta	GA	Zone 1 (highest potential)	65/100
16	30311	Atlanta	GA	Zone 1 (highest potential)	65/100
17	30331	Atlanta	GA	Zone 1 (highest potential)	65/100
18	30004	Alpharetta	GA	Zone 1 (highest potential)	66/100
19	30005	Alpharetta	GA	Zone 1 (highest potential)	66/100
20	30009	Alpharetta	GA	Zone 1 (highest potential)	66/100
21	30022	Alpharetta	GA	Zone 1 (highest potential)	66/100
22	30062	Marietta	GA	Zone 1 (highest potential)	66/100
23	30066	Marietta	GA	Zone 1 (highest potential)	66/100
24	30075	Roswell	GA	Zone 1 (highest potential)	66/100
25	30076	Roswell	GA	Zone 1 (highest potential)	66/100
26	30092	Norcross	GA	Zone 1 (highest potential)	66/100
27	30303	Atlanta	GA	Zone 1 (highest potential)	66/100
28	30305	Atlanta	GA	Zone 1 (highest potential)	66/100
29	30308	Atlanta	GA	Zone 1 (highest potential)	66/100
30	30309	Atlanta	GA	Zone 1 (highest potential)	66/100
31	30312	Atlanta	GA	Zone 1 (highest potential)	66/100
32	30313	Atlanta	GA	Zone 1 (highest potential)	66/100
33	30314	Atlanta	GA	Zone 1 (highest potential)	66/100
34	30318	Atlanta	GA	Zone 1 (highest potential)	66/100
35	30324	Atlanta	GA	Zone 1 (highest potential)	66/100
36	30326	Atlanta	GA	Zone 1 (highest potential)	66/100
37	30327	Atlanta	GA	Zone 1 (highest potential)	66/100
38	30328	Atlanta	GA	Zone 1 (highest potential)	66/100
39	30336	Atlanta	GA	Zone 1 (highest potential)	66/100
40	30339	Atlanta	GA	Zone 1 (highest potential)	66/100
41	30342	Atlanta	GA	Zone 1 (highest potential)	66/100
42	30350	Atlanta	GA	Zone 1 (highest potential)	66/100
43	30363	Atlanta	GA	Zone 1 (highest potential)	66/100
44	30008	Marietta	GA	Zone 1 (highest potential)	67/100
45	30017	Grayson	GA	Zone 1 (highest potential)	67/100
46	30043	Lawrenceville	GA	Zone 1 (highest potential)	67/100
47	30044	Lawrenceville	GA	Zone 1 (highest potential)	67/100
48	30045	Lawrenceville	GA	Zone 1 (highest potential)	67/100
49	30046	Lawrenceville	GA	Zone 1 (highest potential)	67/100
50	30060	Marietta	GA	Zone 1 (highest potential)	67/100
51	30064	Marietta	GA	Zone 1 (highest potential)	67/100
52	30067	Marietta	GA	Zone 1 (highest potential)	67/100
53	30068	Marietta	GA	Zone 1 (highest potential)	67/100
54	30080	Smyrna	GA	Zone 1 (highest potential)	67/100
55	30082	Smyrna	GA	Zone 1 (highest potential)	67/100
56	30106	Austell	GA	Zone 1 (highest potential)	67/100
57	30126	Mableton	GA	Zone 1 (highest potential)	67/100
58	30144	Kennesaw	GA	Zone 1 (highest potential)	67/100
59	30152	Kennesaw	GA	Zone 1 (highest potential)	67/100
60	30024	Suwanee	GA	Zone 1 (highest potential)	—
61	30332	Atlanta	GA	Zone 1 (highest potential)	—

Methodology

This ranking is limited to EPA county-level radon zone classification. Zone 1 is an EPA county-level radon-potential category; it does not measure a home or establish whether any building is above an action level. Within Zone 1, ZIP codes are sub-ranked by Home Safety Score to organize area context.

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: 2026-10-19.

Frequently Asked Questions

What is EPA Radon Zone 1?

Zone 1 is an EPA county-level radon-potential category. It is not a measurement for a home and cannot determine whether a building is above an action level. A home test is required for that decision.

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%.