Highest Radon Risk ZIP Codes in Kansas — 2026

Out of 396 ZIP codes with data in Kansas, these are the lowest-ranked areas for radon zone. See also: National ZIP Codes with Highest Radon Risk | All Kansas Rankings

Statistic	Value
ZIP codes ranked	396
Lowest value	Zone 1 (High)
Median value	Zone 1 (High)
State	Kansas

100 Lowest-Ranked ZIP Codes

Rank	ZIP Code	City	State	Radon Zone	Safety Score
1	67657	Palco	KS	Zone 1 (High)	3/100
2	67879	Tribune	KS	Zone 1 (High)	22/100
3	67423	Beverly	KS	Zone 1 (High)	28/100
4	67548	La Crosse	KS	Zone 1 (High)	28/100
5	67451	Hope	KS	Zone 1 (High)	29/100
6	67638	Gaylord	KS	Zone 1 (High)	31/100
7	66935	Belleville	KS	Zone 1 (High)	33/100
8	66963	Randall	KS	Zone 1 (High)	33/100
9	67066	Iuka	KS	Zone 1 (High)	33/100
10	67663	Plainville	KS	Zone 1 (High)	33/100
11	67748	Oakley	KS	Zone 1 (High)	33/100
12	67837	Copeland	KS	Zone 1 (High)	33/100
13	67870	Satanta	KS	Zone 1 (High)	33/100
14	67669	Stockton	KS	Zone 1 (High)	35/100
15	67478	Simpson	KS	Zone 1 (High)	37/100
16	67418	Barnard	KS	Zone 1 (High)	39/100
17	66013	Bucyrus	KS	Zone 1 (High)	40/100
18	66031	New Century	KS	Zone 1 (High)	40/100
19	66113	Edwardsville	KS	Zone 1 (High)	40/100
20	66201	Mission	KS	Zone 1 (High)	40/100
21	66202	Mission	KS	Zone 1 (High)	40/100
22	66203	Shawnee	KS	Zone 1 (High)	40/100
23	66205	Mission	KS	Zone 1 (High)	40/100
24	66206	Leawood	KS	Zone 1 (High)	40/100
25	66207	Overland Park	KS	Zone 1 (High)	40/100
26	66208	Prairie Village	KS	Zone 1 (High)	40/100
27	66212	Overland Park	KS	Zone 1 (High)	40/100
28	66222	Mission	KS	Zone 1 (High)	40/100
29	66225	Overland Park	KS	Zone 1 (High)	40/100
30	66250	Shawnee Mission	KS	Zone 1 (High)	40/100
31	66251	Overland Park	KS	Zone 1 (High)	40/100
32	66276	Shawnee Mission	KS	Zone 1 (High)	40/100
33	66283	Overland Park	KS	Zone 1 (High)	40/100
34	66285	Lenexa	KS	Zone 1 (High)	40/100
35	66286	Shawnee	KS	Zone 1 (High)	40/100
36	66404	Baileyville	KS	Zone 1 (High)	40/100
37	66412	Bremen	KS	Zone 1 (High)	40/100
38	66426	Fostoria	KS	Zone 1 (High)	40/100
39	66838	Burdick	KS	Zone 1 (High)	40/100
40	66858	Lincolnville	KS	Zone 1 (High)	40/100
41	66859	Lost Springs	KS	Zone 1 (High)	40/100
42	66932	Athol	KS	Zone 1 (High)	40/100
43	66946	Hollenberg	KS	Zone 1 (High)	40/100
44	66961	Norway	KS	Zone 1 (High)	40/100
45	66970	Webber	KS	Zone 1 (High)	40/100
46	67021	Byers	KS	Zone 1 (High)	40/100
47	67106	Milton	KS	Zone 1 (High)	40/100
48	67420	Beloit	KS	Zone 1 (High)	40/100
49	67475	Ramona	KS	Zone 1 (High)	40/100
50	67483	Tampa	KS	Zone 1 (High)	40/100
51	67512	Alden	KS	Zone 1 (High)	40/100
52	67518	Beeler	KS	Zone 1 (High)	40/100
53	67556	Mc Cracken	KS	Zone 1 (High)	40/100
54	67559	Nekoma	KS	Zone 1 (High)	40/100
55	67627	Catharine	KS	Zone 1 (High)	40/100
56	67628	Cedar	KS	Zone 1 (High)	40/100
57	67635	Dresden	KS	Zone 1 (High)	40/100
58	67656	Ogallah	KS	Zone 1 (High)	40/100
59	67659	Penokee	KS	Zone 1 (High)	40/100
60	67660	Pfeifer	KS	Zone 1 (High)	40/100
61	67674	Walker	KS	Zone 1 (High)	40/100
62	67733	Edson	KS	Zone 1 (High)	40/100
63	67734	Gem	KS	Zone 1 (High)	40/100
64	67743	Levant	KS	Zone 1 (High)	40/100
65	67744	Ludell	KS	Zone 1 (High)	40/100
66	67745	Mc Donald	KS	Zone 1 (High)	40/100
67	67747	Monument	KS	Zone 1 (High)	40/100
68	67756	Saint Francis	KS	Zone 1 (High)	40/100
69	67855	Johnson	KS	Zone 1 (High)	40/100
70	67863	Marienthal	KS	Zone 1 (High)	40/100
71	67868	Pierceville	KS	Zone 1 (High)	40/100
72	67882	Wright	KS	Zone 1 (High)	40/100
73	66040	Lacygne	KS	Zone 1 (High)	42/100
74	66051	Olathe	KS	Zone 1 (High)	43/100
75	66063	Olathe	KS	Zone 1 (High)	43/100
76	66949	Jewell	KS	Zone 1 (High)	43/100
77	67736	Gove	KS	Zone 1 (High)	43/100
78	66085	Stilwell	KS	Zone 1 (High)	45/100
79	66204	Overland Park	KS	Zone 1 (High)	45/100
80	66209	Leawood	KS	Zone 1 (High)	45/100
81	66210	Overland Park	KS	Zone 1 (High)	45/100
82	66215	Lenexa	KS	Zone 1 (High)	45/100
83	66218	Shawnee	KS	Zone 1 (High)	45/100
84	66224	Overland Park	KS	Zone 1 (High)	45/100
85	66438	Home	KS	Zone 1 (High)	45/100
86	66536	Saint Marys	KS	Zone 1 (High)	45/100
87	67124	Pratt	KS	Zone 1 (High)	45/100
88	67446	Glen Elder	KS	Zone 1 (High)	45/100
89	67470	New Cambria	KS	Zone 1 (High)	45/100
90	67575	Rush Center	KS	Zone 1 (High)	45/100
91	67842	Ford	KS	Zone 1 (High)	45/100
92	66020	Easton	KS	Zone 1 (High)	46/100
93	67474	Portis	KS	Zone 1 (High)	46/100
94	67492	Woodbine	KS	Zone 1 (High)	46/100
95	67761	Wallace	KS	Zone 1 (High)	46/100
96	66061	Olathe	KS	Zone 1 (High)	47/100
97	66062	Olathe	KS	Zone 1 (High)	47/100
98	66434	Hiawatha	KS	Zone 1 (High)	47/100
99	67530	Great Bend	KS	Zone 1 (High)	47/100
100	67028	Coats	KS	Zone 1 (High)	48/100

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%.