Map of Radon Zones in California based on Environmental Protection Agency (EPA) data

Back to Radon Zones in the United States

Radon zones


	Zone 3 (28 counties)
	Zone 2 (33 counties)
	Zone 1 (7 counties)

	Highest Potential: counties have a predicted average indoor radon screening level greater than 4 pCi/L (pico curies per liter) (red zones)
	Moderate Potential: counties have a predicted average indoor radon screening level between 2 and 4 pCi/L (orange zones)
	Low Potential: counties have a predicted average indoor radon screening level less than 2 pCi/L (yellow zones)

Alameda County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
94501	Alameda	35	2
94502	Alameda	14	0
94536	Fremont	48	3
94538	Fremont	50	1
94539	Fremont	29	0
94541	Hayward	15	0
94542	Hayward	3	0
94544	Hayward	23	1
94545	Hayward	427	12
94546	Castro Valley	28	1
94550	Livermore	36	3
94551	Livermore	5	0
94552	Castro Valley	13	1
94555	Fremont	17	0
94560	Newark	18	0
94566	Pleasanton	27	2
94568	Dublin	15	0
94577	San Leandro	17	1
94578	San Leandro	16	1
94579	San Leandro	7	0
94580	San Lorenzo	10	0
94582	Pleasanton	42	0
94586	Sunol	28	5
94587	Union City	17	0
94588	Pleasanton	23	0
94601	Oakland	32	0
94602	Oakland	23	0
94603	Oakland	19	0
94605	Oakland	29	0
94606	Oakland	13	0
94607	Oakland	3	0
94608	Emeryville	9	0
94609	Oakland	10	1
94610	Oakland	19	1
94611	Oakland	57	3
94612	Oakland	42	0
94618	Oakland	25	5
94619	Oakland	30	0
94621	Oakland	45	0
94650	Oakland	3	0
94702	Berkeley	18	0
94703	Berkeley	18	0
94704	Berkeley	34	0
94705	Berkeley	13	2
94706	Albany	19	1
94707	Berkeley	36	3
94708	Berkeley	30	1
94709	Berkeley	5	0
94710	Berkeley	6	0

Alpine County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95646	Kirkwood	7	3
96120	Markleeville	47	15

Amador County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95601	Amador City	4	1
95629	Fiddletown	25	8
95640	Ione	117	34
95642	Jackson	90	23
95665	Pine Grove	105	51
95666	Pioneer	157	60
95669	Plymouth	42	13
95675	River Pines	11	9
95685	Sutter Creek	103	30
95689	Volcano	36	14
95699	Drytown	1	0

Butte County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95917	Biggs	2	0
95926	Chico	22	0
95927	Chico	3	0
95928	Chico	13	1
95940	Feather Falls	1	0
95941	Forbestown	1	0
95942	Forest Ranch	2	0
95948	Gridley	3	0
95954	Magalia	4	0
95965	Oroville	13	0
95966	Oroville	9	0
95969	Paradise	33	2
95973	Chico	7	0

Calaveras County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95221	Altaville	14	2
95222	Angels Camp	62	7
95223	Arnold	133	56
95224	Avery	21	15
95225	Burson	11	4
95226	Campo Seco	2	1
95228	Copperopolis	41	8
95232	Glencoe	6	4
95233	Hathaway Pines	23	11
95245	Mokelumne Hill	62	16
95246	Mountain Ranch	34	8
95247	Murphys	126	36
95248	Rail Road Flat	9	5
95249	San Andreas	56	12
95250	Sheep Ranch	4	1
95251	Vallecito	9	1
95252	Valley Springs	173	44
95254	Wallace	15	6
95255	West Point	29	13
95257	Wilseyville	2	2

Colusa County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95987	Williams	1	1

Contra Costa County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
94506	Danville	19	1
94507	Alamo	5	0
94509	Antioch	8	0
94511	Bethel Island	2	0
94513	Brentwood	5	0
94514	Byron	8	0
94516	Canyon	2	0
94517	Clayton	6	0
94518	Concord	19	1
94519	Concord	5	0
94520	Concord	16	0
94521	Concord	17	3
94523	Pleasant Hill	25	1
94524	Concord	27	0
94525	Crockett	1	0
94526	Danville	41	0
94528	Diablo	3	0
94530	El Cerrito	20	0
94531	Antioch	2	0
94547	Hercules	7	0
94549	Lafayette	72	2
94553	Martinez	22	3
94556	Moraga	19	0
94561	Oakley	3	0
94563	Orinda	31	0
94564	Pinole	11	0
94565	Pittsburg	29	2
94583	San Ramon	40	3
94595	Walnut Creek	6	0
94596	Walnut Creek	36	1
94597	Walnut Creek	38	2
94598	Walnut Creek	27	3
94801	Richmond	5	0
94803	El Sobrante	7	0
94804	Richmond	31	0
94805	Richmond	10	1
94806	San Pablo	28	0

Del Norte County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95531	Crescent City	10	1
95548	Klamath	2	0

El Dorado County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95613	Coloma	1	0
95614	Cool	4	0
95619	Diamond Springs	15	0
95623	El Dorado	4	1
95633	Garden Valley	1	0
95634	Georgetown	4	0
95651	Lotus	1	0
95656	Mount Aukum	1	0
95664	Pilot Hill	3	1
95667	Placerville	61	13
95672	Rescue	8	0
95682	Shingle Springs	42	1
95684	Somerset	2	0
95709	Camino	9	0
95726	Pollock Pines	10	0
95762	El Dorado Hills	29	3
96150	South Lake Tahoe	626	319
96151	South Lake Tahoe	654	164
96152	South Lake Tahoe	9	3
96153	South Lake Tahoe	3	1
96154	South Lake Tahoe	6	6
96155	South Lake Tahoe	25	6
96156	South Lake Tahoe	37	21
96157	South Lake Tahoe	13	9
96158	South Lake Tahoe	92	44

Fresno County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
93210	Coalinga	13	0
93602	Auberry	11	4
93608	Cantua Creek	1	0
93609	Caruthers	1	0
93611	Clovis	38	1
93612	Clovis	31	2
93613	Clovis	1	1
93616	Del Rey	16	0
93619	Clovis	5	2
93622	Firebaugh	2	0
93625	Fowler	3	0
93626	Friant	1	0
93630	Kerman	38	16
93631	Kingsburg	12	0
93640	Mendota	2	0
93641	Miramonte	1	0
93646	Orange Cove	2	0
93648	Parlier	55	4
93650	Fresno	1	0
93651	Prather	8	0
93654	Reedley	15	1
93656	Riverdale	3	0
93657	Sanger	13	0
93660	San Joaquin	2	0
93662	Selma	8	1
93667	Tollhouse	10	3
93675	Squaw Valley	5	0
93701	Fresno	2	1
93702	Fresno	6	0
93703	Fresno	20	0
93704	Fresno	24	0
93705	Fresno	14	0
93706	Fresno	29	8
93708	Fresno	1	0
93710	Fresno	27	2
93711	Fresno	61	10
93712	Fresno	1	0
93720	Fresno	33	2
93722	Fresno	38	1
93725	Fresno	21	1
93726	Fresno	24	0
93727	Fresno	19	0
93728	Fresno	3	0
93740	Fresno	17	2
93747	Fresno	2	0
93777	Fresno	1	0
93790	Fresno	1	0

Glenn County
Radon zone : 3

Zip code	City	Number of tests
95913	Artois	1
95943	Glenn	1
95951	Hamilton City	2
95963	Orland	3
95988	Willows	6

Humboldt County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95501	Eureka	31	1
95502	Eureka	2	0
95503	Eureka	11	0
95511	Alderpoint	4	0
95518	Arcata	2	0
95521	Arcata	16	0
95524	Bayside	4	0
95525	Blue Lake	2	0
95526	Bridgeville	1	0
95536	Ferndale	2	0
95537	Fields Landing	1	0
95540	Fortuna	4	0
95547	Hydesville	3	0
95549	Kneeland	2	0
95551	Loleta	8	0
95556	Orleans	1	0
95558	Petrolia	1	0
95560	Redway	2	0
95562	Rio Dell	3	0
95564	Samoa	1	0
95565	Scotia	1	0
95569	Redcrest	1	0
95570	Trinidad	2	0
95573	Willow Creek	2	0
95589	Whitethorn	8	0

Imperial County
Radon zone : 3

Zip code	City	Number of tests
92227	Brawley	3
92232	Calexico	91
92243	El Centro	3
92244	El Centro	3
92249	Heber	1
92251	Imperial	11

Inyo County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
93513	Big Pine	15	3
93514	Bishop	74	20
93515	Bishop	1	0
93526	Independence	28	2
93530	Keeler	1	0
93545	Lone Pine	1	0

Kern County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
93203	Arvin	6	0
93205	Bodfish	3	0
93206	Buttonwillow	1	0
93215	Delano	3	0
93220	Edison	3	1
93222	Frazier Park	6	1
93225	Frazier Park	7	3
93238	Kernville	5	5
93240	Lake Isabella	7	0
93241	Lamont	3	0
93243	Lebec	1	0
93250	McFarland	29	12
93251	McKittrick	1	0
93252	Maricopa	2	0
93255	Onyx	2	1
93263	Shafter	36	2
93268	Taft	9	1
93280	Wasco	27	0
93283	Weldon	2	0
93285	Wofford Heights	3	0
93301	Bakersfield	8	0
93302	Bakersfield	1	0
93303	Bakersfield	1	0
93304	Bakersfield	17	0
93305	Bakersfield	7	1
93306	Bakersfield	51	8
93307	Bakersfield	68	7
93308	Bakersfield	38	2
93309	Bakersfield	46	1
93311	Bakersfield	18	0
93312	Bakersfield	44	5
93313	Bakersfield	12	1
93314	Bakersfield	3	2
93384	Bakersfield	1	0
93389	Bakersfield	2	0
93501	Mojave	5	0
93505	California City	7	1
93516	Boron	2	0
93518-	Caliente	8	0
93523	Edwards	1	0
93524	Edwards	2	0
93554	Randsburg	2	0
93555	Ridgecrest	41	3
93556	Ridgecrest	1	0
93560	Rosamond	12	1
93561	Tehachapi	23	5
93581	Tehachapi	2	0
93582	Tehachapi	2	0

Kings County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
93202	Armona	2	0
93204	Avenal	34	3
93212	Corcoran	11	5
93230	Hanford	24	1
93245	Lemoore	8	1

Lake County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95422	Clearlake	13	0
95423	Clearlake Oaks	4	0
95443	Glenhaven	1	0
95451	Kelseyville	9	2
95453	Lakeport	19	0
95457	Lower Lake	7	0
95458	Lucerne	1	1
95461	Middletown	4	0
95485	Upper Lake	1	0

Lassen County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
96009	Bieber	2	0
96109	Doyle	2	0
96113	Herlong	1	0
96114	Janesville	9	1
96128	Standish	1	0
96130	Susanville	34	2
96137	Westwood	6	1

Los Angeles County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
90001	Los Angeles	43	1
90002	Los Angeles	3	0
90003	Los Angeles	3	0
90004	Los Angeles	54	0
90005	Los Angeles	8	0
90006	Los Angeles	13	0
90007	Los Angeles	40	1
90008	Los Angeles	4	0
90010	Los Angeles	11	1
90011	Los Angeles	1	0
90012	Los Angeles	7	0
90013	Los Angeles	4	0
90014	Los Angeles	4	0
90016	Los Angeles	6	0
90017	Los Angeles	15	0
90018	Los Angeles	4	0
90019	Los Angeles	21	0
90020	Los Angeles	16	0
90021	Los Angeles	2	0
90023	Los Angeles	4	0
90024	Los Angeles	74	3
90025	Los Angeles	90	7
90026	Los Angeles	37	3
90027	Los Angeles	55	8
90028	Los Angeles	11	0
90029	Los Angeles	5	0
90031	Los Angeles	20	0
90032	Los Angeles	9	1
90033	Los Angeles	4	0
90034	Los Angeles	52	0
90035	Los Angeles	38	0
90036	Los Angeles	45	1
90037	Los Angeles	3	0
90038	Los Angeles	2	0
90039	Los Angeles	13	2
90040	Los Angeles	1	0
90041	Los Angeles	23	1
90042	Los Angeles	26	2
90043	Los Angeles	18	8
90044	Los Angeles	2	0
90045	Los Angeles	53	4
90046	Los Angeles	75	7
90047	Los Angeles	10	0
90048	Los Angeles	38	1
90049	Los Angeles	162	16
90050	Los Angeles	1	0
90052	Los Angeles	1	0
90056	Los Angeles	5	0
90057	Los Angeles	6	1
90059	Los Angeles	7	0
90062	Los Angeles	1	0
90063	Los Angeles	3	0
90064	Los Angeles	87	1
90065	Los Angeles	13	3
90066	Los Angeles	94	2
90067	Los Angeles	7	0
90068	Los Angeles	118	5
90069	West Hollywood	28	0
90071	Los Angeles	1	0
90076	Los Angeles	1	0
90077	Los Angeles	58	15
90078	Los Angeles	4	2
90082	Los Angeles	1	0
90086	Los Angeles	1	0
90093	Los Angeles	2	0
90201	Bell	3	0
90209	Beverly Hills	2	0
90210	Beverly Hills	147	13
90211	Beverly Hills	34	0
90212	Beverly Hills	49	6
90213	Beverly Hills	1	0
90220	Compton	4	0
90221	Compton	1	0
90222	Compton	1	0
90224	Compton	2	1
90230	Culver City	43	6
90232	Culver City	13	0
90233	Culver City	1	0
90240	Downey	6	0
90241	Downey	14	0
90242	Downey	7	0
90245	El Segundo	88	1
90247	Gardena	21	0
90248	Gardena	2	0
90249	Gardena	8	0
90250	Hawthorne	19	0
90254	Hermosa Beach	34	1
90255	Huntington Park	1	0
90260	Lawndale	9	0
90262	Lynwood	4	0
90264	Malibu	1	0
90265	Malibu	69	9
90266	Manhattan Beach	48	1
90267	Manhattan Beach	2	0
90270	Maywood	1	0
90272	Pacific Palisades	266	13
90274	Palos Verdes Peninsula	296	83
90275	Rancho Palos Verdes	397	75
90277	Redondo Beach	81	4
90278	Redondo Beach	51	0
90280	South Gate	10	0
90290	Topanga	47	2
90291	Venice	34	2
90292	Marina Del Rey	25	2
90293	Playa Del Rey	17	0
90294	Venice	1	0
90295	Marina Del Rey	1	0
90301	Inglewood	4	2
90302	Inglewood	4	0
90303	Inglewood	1	0
90304	Inglewood	1	0
90305	Inglewood	2	0
90309	Inglewood	1	0
90401	Santa Monica	11	0
90402	Santa Monica	81	16
90403	Santa Monica	31	1
90404	Santa Monica	9	0
90405	Santa Monica	65	3
90406	Santa Monica	2	0
90409	Santa Monica	1	0
90501	Torrance	26	0
90502	Torrance	21	6
90503	Torrance	17	3
90504	Torrance	16	0
90505	Torrance	61	5
90509	Torrance	2	0
90510	Torrance	1	0
90601	Whittier	8	0
90602	Whittier	8	3
90603	Whittier	12	1
90604	Whittier	12	2
90605	Whittier	10	2
90606	Whittier	5	0
90637	La Mirada	3	0
90638	La Mirada	24	0
90640	Montebello	14	0
90650	Norwalk	13	0
90660	Pico Rivera	6	0
90670	Santa Fe Springs	3	0
90701	Artesia	8	0
90703	Cerritos	16	0
90704	Avalon	1	0
90706	Bellflower	22	0
90710	Harbor City	16	0
90711	Lakewood	2	0
90712	Lakewood	21	0
90713	Lakewood	23	0
90715	Lakewood	3	0
90716	Hawaiian Gardens	2	0
90717	Lomita	28	3
90723	Paramount	19	0
90731	San Pedro	51	5
90732	San Pedro	73	7
90744	Wilmington	7	0
90745	Carson	8	0
90746	Carson	9	0
90755	Signal Hill	5	0
90802	Long Beach	37	0
90803	Long Beach	48	0
90804	Long Beach	14	1
90805	Long Beach	11	0
90806	Long Beach	12	0
90807	Long Beach	25	0
90808	Long Beach	21	0
90809	Long Beach	2	0
90810	Long Beach	11	0
90813	Long Beach	1	0
90814	Long Beach	10	0
90815	Long Beach	35	1
90832	Long Beach	2	0
91001	Altadena	45	3
91006	Arcadia	48	0
91007	Arcadia	16	0
91009	Duarte	1	0
91010	Duarte	13	0
91011	La Canada Flintridge	56	2
91012	La Canada	2	0
91016	Monrovia	21	0
91017	Monrovia	1	0
91020	Montrose	10	0
91024	Sierra Madre	14	0
91030	South Pasadena	39	10
91031	South Pasadena	2	1
91040	Sunland	37	0
91042	Tujunga	50	4
91077	Arcadia	1	0
91101	Pasadena	35	1
91102	Pasadena	1	0
91103	Pasadena	17	0
91104	Pasadena	22	3
91105	Pasadena	27	1
91106	Pasadena	22	2
91107	Pasadena	45	1
91108	San Marino	42	1
91109	Pasadena	2	0
91118	San Marino	2	0
91125	Pasadena	1	0
91201	Glendale	15	0
91202	Glendale	19	0
91203	Glendale	4	1
91204	Glendale	1	0
91205	Glendale	4	1
91206	Glendale	31	0
91207	Glendale	15	0
91208	Glendale	40	0
91209	Glendale	1	0
91214	La Crescenta	33	0
91301	Agoura Hills	526	58
91302	Calabasas	306	52
91303	Canoga Park	44	3
91304	Canoga Park	185	29
91306	Winnetka	61	7
91307	West Hills	215	64
91308	West Hills	2	1
91309	Canoga Park	1	0
91311	Chatsworth	196	32
91313	Chatsworth	2	0
91316	Encino	203	61
91321	Newhall	18	0
91324	Northridge	63	10
91325	Northridge	102	28
91326	Northridge	163	5
91330	Northridge	3	1
91331	Pacoima	34	0
91335	Reseda	119	24
91337	Reseda	1	0
91340	San Fernando	1	0
91342	Sylmar	65	14
91343	North Hills	97	7
91344	Granada Hills	164	27
91345	Mission Hills	20	0
91350	Santa Clarita	47	0
91351	Canyon Country	23	0
91352	Sun Valley	18	2
91354	Valencia	18	0
91355	Valencia	56	0
91356	Tarzana	210	34
91357	Tarzana	1	0
91363	Westlake Village	1	0
91364	Woodland Hills	294	93
91365	Woodland Hills	18	8
91367	Woodland Hills	348	117
91372	Calabasas	9	4
91376	Agoura Hills	1	0
91380	Santa Clarita	3	0
91381	Stevenson Ranch	16	0
91384	Castaic	23	0
91385	Valencia	1	0
91387	Canyon Country	24	0
91390	Santa Clarita	12	0
91392	Sylmar	2	0
91394	Granada Hills	4	0
91401	Van Nuys	61	0
91402	Panorama City	35	0
91403	Sherman Oaks	127	20
91405	Van Nuys	39	0
91406	Van Nuys	84	1
91408	Van Nuys	1	1
91409	Van Nuys	6	0
91411	Van Nuys	30	0
91412	Panorama City	1	0
91413	Sherman Oaks	4	1
91416	Encino	1	0
91423	Sherman Oaks	167	37
91426	Encino	2	1
91436	Encino	282	25
91501	Burbank	14	0
91502	Burbank	16	0
91503	Burbank	2	0
91504	Burbank	38	0
91505	Burbank	55	0
91506	Burbank	24	0
91508	Burbank	1	0
91510	Burbank	5	0
91522	Burbank	2	0
91601	North Hollywood	63	0
91602	North Hollywood	49	0
91604	Studio City	123	20
91605	North Hollywood	56	1
91606	North Hollywood	38	0
91607	Valley Village	90	0
91608	Universal City	4	0
91617	Valley Village	2	0
91702	Azusa	5	0
91706	Baldwin Park	5	0
91711	Claremont	35	0
91722	Covina	5	0
91723	Covina	4	0
91724	Covina	15	1
91731	El Monte	3	0
91732	El Monte	1	0
91733	South El Monte	1	0
91740	Glendora	26	0
91741	Glendora	10	0
91744	La Puente	9	0
91745	Hacienda Heights	22	0
91746	La Puente	9	0
91748	Rowland Heights	20	0
91750	La Verne	19	0
91754	Monterey Park	6	0
91755	Monterey Park	5	0
91756	Monterey Park	1	0
91759	Mt Baldy	1	1
91765	Diamond Bar	36	6
91766	Pomona	49	5
91767	Pomona	11	0
91768	Pomona	3	0
91769	Pomona	1	0
91770	Rosemead	9	2
91773	San Dimas	23	0
91775	San Gabriel	16	0
91776	San Gabriel	6	0
91780	Temple City	16	0
91788	Walnut	1	0
91789	Walnut	20	0
91790	West Covina	13	0
91791	West Covina	12	1
91792	West Covina	7	1
91801	Alhambra	26	1
91803	Alhambra	9	0
93510	Acton	10	0
93532	Lake Hughes	1	0
93534	Lancaster	20	0
93535	Lancaster	21	0
93536	Lancaster	31	1
93543	Littlerock	4	0
93544	Llano	2	0
93550	Palmdale	29	0
93551	Palmdale	30	0
93552	Palmdale	5	0
93553	Pearblossom	7	0
93590	Palmdale	1	0
93591	Palmdale	1	0

Madera County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
93601	Ahwahnee	28	0
93604	Bass Lake	16	5
93610	Chowchilla	4	0
93614	Coarsegold	24	1
93637	Madera	13	0
93638	Madera	22	2
93643	North Fork	50	16
93644	Oakhurst	144	25
93645	O Neals	1	0
93653	Raymond	6	0
93669	Wishon	3	1

Marin County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
94901	San Rafael	41	0
94903	San Rafael	27	2
94904	Greenbrae	18	2
94920	Belvedere Tiburon	20	0
94924	Bolinas	3	0
94925	Corte Madera	13	1
94930	Fairfax	8	0
94933	Forest Knolls	3	0
94937	Inverness	5	2
94939	Larkspur	12	0
94941	Mill Valley	43	2
94942	Mill Valley	1	0
94945	Novato	29	0
94946-	Nicasio	1	0
94947	Novato	40	3
94949	Novato	17	0
94950	Olema	1	0
94956	Point Reyes Station	3	0
94957	Ross	3	0
94960	San Anselmo	15	0
94965	Sausalito	28	0
94970	Stinson Beach	1	0
94973	Woodacre	1	0
94979	San Anselmo	1	0

Mariposa County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
93623	Fish Camp	3	1
95306	Catheys Valley	5	1
95311	Coulterville	3	0
95318	El Portal	6	0
95325	Hornitos	1	0
95338	Mariposa	26	1
95345	Midpines	1	0
95389	Yosemite National Park	4	0

Mendocino County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95410	Albion	1	0
95415	Boonville	2	0
95428	Covelo	1	0
95437	Fort Bragg	10	4
95456	Littleriver	1	0
95459	Manchester	2	0
95460	Mendocino	2	0
95463	Navarro	1	0
95468	Point Arena	2	0
95469	Potter Valley	5	2
95470	Redwood Valley	4	0
95482	Ukiah	14	0
95490	Willits	7	0

Merced County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
93635	Los Banos	17	0
93661	Santa Rita Park	1	0
95301	Atwater	10	0
95315	Delhi	2	0
95317	El Nido	1	0
95322	Gustine	2	0
95324	Hilmar	2	0
95333	Le Grand	1	0
95340	Merced	35	9
95344	Merced	1	1
95348	Merced	6	1

Modoc County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
96006	Adin	2	0
96101	Alturas	5	0
96104	Cedarville	5	2
96110	Eagleville	1	0
96112	Fort Bidwell	28	3
96116	Likely	1	1

Mono County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
93517	Bridgeport	3	1
93541	Lee Vining	4	0
93546	Mammoth Lakes	12	3
96107	Coleville	5	2

Monterey County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
93426	Bradley	4	0
93450	San Ardo	1	0
93901	Salinas	121	5
93902	Salinas	1	0
93905	Salinas	27	3
93906	Salinas	107	2
93907	Salinas	114	1
93908	Salinas	141	3
93912	Salinas	1	0
93921	Carmel	19	1
93922	Carmel	3	0
93923	Carmel	156	11
93924	Carmel Valley	92	25
93925	Chualar	2	0
93926	Gonzales	5	1
93927	Greenfield	8	0
93930	King City	28	5
93933	Marina	71	1
93940	Monterey	293	16
93942	Monterey	2	0
93950	Pacific Grove	189	1
93953	Pebble Beach	81	2
93955	Seaside	85	0
93960	Soledad	6	0
93962	Spreckels	1	0
95004	Aromas	18	0
95012	Castroville	7	0
95039	Moss Landing	1	0

Napa County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
94503	American Canyon	11	0
94508	Angwin	3	0
94515	Calistoga	1	0
94558	Napa	80	9
94559	Napa	15	2
94574	Saint Helena	15	4
94581	Napa	1	0
94599	Yountville	4	0

Nevada County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95712	Chicago Park	2	0
95728	Soda Springs	3	0
95924	Cedar Ridge	3	0
95945	Grass Valley	62	14
95946	Penn Valley	21	0
95949	Grass Valley	25	4
95959	Nevada City	56	16
95960	North San Juan	2	0
95975	Rough And Ready	5	0
96160	Truckee	64	18
96161	Truckee	278	72
96162	Truckee	50	15

Orange County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
90620	Buena Park	20	0
90621	Buena Park	7	1
90623	La Palma	19	0
90630	Cypress	50	1
90631	La Habra	35	5
90680	Stanton	9	0
90720	Los Alamitos	33	0
90740	Seal Beach	24	1
90743	Surfside	1	0
92602	Irvine	5	1
92603	Irvine	15	0
92604	Irvine	41	4
92606	Irvine	13	0
92607	Laguna Niguel	1	0
92610	Foothill Ranch	21	1
92612	Irvine	13	0
92614	Irvine	37	2
92615	Huntington Beach	4	0
92618	Irvine	24	0
92620	Irvine	43	3
92624	Capistrano Beach	3	1
92625	Corona Del Mar	42	5
92626	Costa Mesa	70	5
92627	Costa Mesa	44	2
92628	Costa Mesa	1	0
92629	Dana Point	34	0
92630	Lake Forest	88	0
92637	Laguna Woods	7	0
92646	Huntington Beach	69	0
92647	Huntington Beach	97	1
92648	Huntington Beach	64	2
92649	Huntington Beach	47	2
92651	Laguna Beach	46	2
92653	Laguna Hills	108	5
92654	Laguna Hills	6	0
92655	Midway City	10	0
92656	Aliso Viejo	73	2
92657	Newport Coast	19	0
92660	Newport Beach	53	0
92663	Newport Beach	60	8
92672	San Clemente	47	4
92673	San Clemente	63	1
92674	San Clemente	1	1
92675	San Juan Capistrano	39	4
92676	Silverado	3	0
92677	Laguna Niguel	134	9
92679	Trabuco Canyon	100	0
92683	Westminster	47	0
92685	Westminster	55	0
92688	Rancho Santa Margarita	79	0
92690	Mission Viejo	4	0
92691	Mission Viejo	77	4
92692	Mission Viejo	116	3
92693	San Juan Capistrano	3	0
92697	Irvine	2	0
92698	Irvine	1	0
92701	Santa Ana	4	0
92703	Santa Ana	4	0
92704	Santa Ana	14	2
92705	Santa Ana	64	5
92706	Santa Ana	13	0
92707	Santa Ana	14	0
92708	Fountain Valley	56	0
92728	Fountain Valley	1	0
92780	Tustin	39	1
92782	Tustin	23	4
92801	Anaheim	28	2
92802	Anaheim	17	0
92804	Anaheim	30	0
92805	Anaheim	27	1
92806	Anaheim	29	1
92807	Anaheim	56	5
92808	Anaheim	32	0
92814	Anaheim	1	0
92817	Anaheim	2	0
92821	Brea	58	1
92823	Brea	5	2
92831	Fullerton	41	3
92832	Fullerton	12	0
92833	Fullerton	24	2
92834	Fullerton	8	0
92835	Fullerton	23	2
92840	Garden Grove	58	0
92841	Garden Grove	9	0
92843	Garden Grove	5	0
92844	Garden Grove	13	0
92845	Garden Grove	23	0
92861	Villa Park	12	4
92865	Orange	145	4
92866	Orange	18	0
92867	Orange	43	3
92868	Orange	4	0
92869	Orange	37	1
92870	Placentia	60	8
92885	Yorba Linda	1	0
92886	Yorba Linda	76	7
92887	Yorba Linda	46	4

Placer County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95602	Auburn	8	0
95603	Auburn	49	2
95604	Auburn	2	0
95631	Foresthill	13	2
95648	Lincoln	14	0
95650	Loomis	17	0
95658	Newcastle	14	0
95661	Roseville	25	2
95663	Penryn	1	0
95677	Rocklin	16	3
95678	Roseville	31	0
95681	Sheridan	1	0
95701	Alta	1	1
95703	Applegate	12	3
95713	Colfax	12	3
95717	Gold Run	1	0
95722	Meadow Vista	6	0
95736	Weimar	2	0
95746	Granite Bay	15	2
95747	Roseville	12	0
95765	Rocklin	17	2
96140	Carnelian Bay	29	7
96141	Homewood	9	1
96142	Tahoma	9	1
96143	Kings Beach	46	9
96145	Tahoe City	89	22
96146	Olympic Valley	25	3
96148	Tahoe Vista	23	5

Plumas County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95934	Crescent Mills	1	0
95947	Greenville	1	0
95956	Meadow Valley	1	0
95971	Quincy	21	8
96020	Chester	2	0
96103	Blairsden-Graeagle	4	0
96105	Chilcoot	1	0
96122	Portola	8	0

Riverside County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
91718	Corona	6	0
91719	Corona	11	0
91720	Corona	21	0
91752	Mira Loma	3	0
91760	Norco	3	0
92201	Indio	10	0
92202	Indio	1	0
92203	Indio	5	0
92210	Indian Wells	3	0
92211	Palm Desert	9	0
92220	Banning	6	0
92223	Beaumont	13	0
92225	Blythe	1	0
92230	Cabazon	2	0
92234	Cathedral City	11	0
92235	Cathedral City	1	0
92239	Desert Center	1	0
92240	Desert Hot Springs	4	0
92241	Desert Hot Springs	2	0
92253	La Quinta	15	0
92254	Mecca	1	0
92258	North Palm Springs	5	0
92260	Palm Desert	21	1
92261	Palm Desert	1	1
92262	Palm Springs	37	1
92263	Palm Springs	2	0
92264	Palm Springs	16	0
92270	Rancho Mirage	20	2
92274	Thermal	1	0
92320	Calimesa	3	0
92501	Riverside	6	1
92503	Riverside	16	0
92504	Riverside	20	1
92505	Riverside	11	0
92506	Riverside	22	1
92507	Riverside	33	0
92508	Riverside	7	0
92509	Riverside	11	0
92519	Riverside	1	0
92530	Lake Elsinore	3	0
92532	Lake Elsinore	1	0
92536	Aguanga	1	0
92543	Hemet	8	0
92544	Hemet	22	0
92545	Hemet	6	0
92546	Hemet	1	0
92548	Homeland	1	0
92549	Idyllwild	9	2
92551	Moreno Valley	4	0
92553	Moreno Valley	13	0
92555	Moreno Valley	4	0
92557	Moreno Valley	8	0
92561	Mountain Center	2	0
92562	Murrieta	29	1
92563	Murrieta	20	2
92567	Nuevo	2	0
92570	Perris	2	0
92571	Perris	1	0
92582	San Jacinto	9	2
92583	San Jacinto	12	0
92584	Menifee	3	0
92585	Sun City	6	0
92586	Sun City	7	0
92587	Sun City	22	7
92590	Temecula	2	0
92591	Temecula	8	0
92592	Temecula	14	0
92595	Wildomar	5	0
92860	Norco	1	0
92879	Corona	5	0
92880	Corona	14	1
92881	Corona	5	0
92882	Corona	30	0
92883	Corona	8	1

Sacramento County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
94203	Sacramento	4	1
94234	Sacramento	5	2
94271	Sacramento	1	1
95608	Carmichael	26	2
95610	Citrus Heights	14	1
95611	Citrus Heights	2	0
95621	Citrus Heights	17	1
95624	Elk Grove	18	1
95626	Elverta	4	0
95628	Fair Oaks	51	5
95630	Folsom	41	6
95632	Galt	6	1
95638	Herald	2	0
95641	Isleton	1	0
95655	Mather	3	1
95660	North Highlands	21	1
95662	Orangevale	20	0
95670	Rancho Cordova	29	0
95671	Represa	1	0
95673	Rio Linda	2	0
95683	Sloughhouse	3	1
95690	Walnut Grove	1	0
95693	Wilton	1	0
95741	Rancho Cordova	4	0
95742	Rancho Cordova	6	0
95757	Elk Grove	2	0
95758	Elk Grove	21	1
95814	Sacramento	3	0
95815	Sacramento	4	0
95816	Sacramento	19	1
95817	Sacramento	5	0
95818	Sacramento	37	7
95819	Sacramento	12	0
95820	Sacramento	9	0
95821	Sacramento	26	2
95822	Sacramento	12	0
95823	Sacramento	5	0
95824	Sacramento	6	0
95825	Sacramento	9	0
95826	Sacramento	21	1
95827	Sacramento	8	3
95828	Sacramento	14	2
95829	Sacramento	14	1
95831	Sacramento	32	2
95832	Sacramento	2	0
95833	Sacramento	18	0
95834	Sacramento	39	0
95835	Sacramento	3	1
95841	Sacramento	12	1
95842	Sacramento	11	0
95843	Antelope	21	1
95851	Sacramento	2	0
95864	Sacramento	16	1
95899	Sacramento	8	0

San Benito County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95023	Hollister	11	0
95045	San Juan Bautista	3	1
95075	Tres Pinos	1	0

San Bernardino County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
91701	Alta Loma	32	0
91708	Chino	2	0
91709	Chino Hills	27	0
91710	Chino	14	0
91730	Rancho Cucamonga	34	0
91737	Alta Loma	18	2
91739	Rancho Cucamonga	14	0
91761	Ontario	7	0
91762	Ontario	19	0
91763	Montclair	3	0
91764	Ontario	22	1
91784	Upland	16	0
91785	Upland	1	0
91786	Upland	22	2
92242	Earp	1	0
92252	Joshua Tree	6	0
92256	Morongo Valley	2	1
92268	Pioneertown	2	0
92277	Twentynine Palms	17	0
92278	Twentynine Palms	773	14
92284	Yucca Valley	17	0
92285	Landers	2	0
92286	Yucca Valley	1	0
92301	Adelanto	7	0
92307	Apple Valley	27	1
92308	Apple Valley	8	0
92310	Fort Irwin	22	0
92311	Barstow	36	2
92312	Barstow	2	0
92313	Grand Terrace	4	0
92314	Big Bear City	8	1
92315	Big Bear Lake	3	0
92316	Bloomington	2	0
92317	Blue Jay	4	3
92322	Cedarpines Park	1	1
92324	Colton	10	0
92325	Crestline	19	12
92326	Crest Park	1	0
92329	Phelan	2	0
92335	Fontana	34	0
92336	Fontana	16	0
92337	Fontana	3	0
92338	Ludlow	1	0
92340	Hesperia	2	0
92341	Green Valley Lake	15	11
92342	Helendale	4	0
92345	Hesperia	6	0
92346	Highland	17	0
92347	Hinkley	1	0
92352	Lake Arrowhead	6	1
92354	Loma Linda	10	0
92356	Lucerne Valley	5	3
92358	Lytle Creek	1	0
92359	Mentone	4	0
92363	Needles	55	0
92366	Mountain Pass	27	4
92371	Phelan	1	0
92373	Redlands	29	0
92374	Redlands	85	0
92376	Rialto	12	0
92377	Rialto	4	0
92382	Running Springs	5	2
92386	Sugarloaf	3	0
92391	Twin Peaks	7	1
92392	Victorville	17	0
92393	Victorville	1	0
92395	Victorville	4	0
92397	Wrightwood	9	1
92398	Yermo	2	0
92399	Yucaipa	10	0
92401	San Bernardino	3	0
92404	San Bernardino	10	0
92405	San Bernardino	6	0
92407	San Bernardino	7	0
92410	San Bernardino	1	0
92412	San Bernardino	1	0
92416	San Bernardino	1	0
93558	Red Mountain	1	0

San Diego County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
91901	Alpine	8	0
91902	Bonita	2	0
91903	Alpine	2	0
91906	Campo	4	1
91910	Chula Vista	20	2
91911	Chula Vista	4	0
91913	Chula Vista	3	0
91914	Chula Vista	5	0
91915	Chula Vista	3	0
91916	Descanso	8	0
91931	Guatay	1	0
91932	Imperial Beach	20	0
91934	Jacumba	1	0
91935	Jamul	6	0
91941	La Mesa	15	0
91942	La Mesa	8	1
91943	La Mesa	1	0
91945	Lemon Grove	2	0
91950	National City	11	0
91962	Pine Valley	1	1
91977	Spring Valley	16	0
91978	Spring Valley	1	0
92003	Bonsall	3	0
92004	Borrego Springs	2	0
92007	Cardiff by the Sea	7	0
92008	Carlsbad	35	1
92009	Carlsbad	23	0
92014	Del Mar	13	0
92019	El Cajon	17	0
92020	El Cajon	22	0
92021	El Cajon	34	1
92022	El Cajon	1	0
92024	Encinitas	42	5
92025	Escondido	42	6
92026	Escondido	21	1
92027	Escondido	11	1
92028	Fallbrook	57	3
92029	Escondido	5	1
92030	Escondido	1	0
92033	Escondido	4	0
92036	Julian	12	0
92037	La Jolla	41	5
92038	La Jolla	2	0
92040	Lakeside	55	0
92054	Oceanside	32	0
92055	Camp Pendleton	1	0
92056	Oceanside	37	0
92057	Oceanside	13	0
92058	Oceanside	1	0
92059	Pala	4	0
92060	Palomar Mountain	1	1
92061	Pauma Valley	1	0
92064	Poway	52	5
92065	Ramona	58	6
92067	Rancho Santa Fe	6	1
92069	San Marcos	29	2
92070	Santa Ysabel	2	0
92071	Santee	27	2
92072	Santee	1	0
92075	Solana Beach	15	2
92078	San Marcos	5	0
92081	Vista	3	0
92082	Valley Center	9	4
92083	Vista	23	2
92084	Vista	30	1
92085	Vista	1	0
92086	Warner Springs	1	1
92088	Fallbrook	1	0
92091	Rancho Santa Fe	2	0
92092	La Jolla	1	0
92093	La Jolla	2	1
92101	San Diego	5	0
92102	San Diego	6	0
92103	San Diego	17	1
92104	San Diego	19	2
92105	San Diego	8	0
92106	San Diego	15	1
92107	San Diego	17	2
92108	San Diego	6	0
92109	San Diego	13	0
92110	San Diego	15	0
92111	San Diego	12	3
92113	San Diego	2	0
92114	San Diego	2	0
92115	San Diego	19	3
92116	San Diego	7	0
92117	San Diego	14	2
92118	Coronado	16	0
92119	San Diego	17	0
92120	San Diego	25	2
92121	San Diego	3	1
92122	San Diego	25	0
92123	San Diego	8	0
92124	San Diego	16	0
92126	San Diego	461	7
92127	San Diego	10	0
92128	San Diego	21	0
92129	San Diego	19	0
92130	San Diego	28	0
92131	San Diego	16	0
92139	San Diego	4	0
92154	San Diego	3	0
92160	San Diego	8	0
92173	San Ysidro	14	1

San Francisco County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
94101	San Francisco	2	0
94102	San Francisco	36	0
94103	San Francisco	9	1
94104	San Francisco	5	0
94105	San Francisco	10	0
94107	San Francisco	34	0
94108	San Francisco	5	0
94109	San Francisco	27	0
94110	San Francisco	28	1
94111	San Francisco	13	0
94112	San Francisco	21	0
94114	San Francisco	45	2
94115	San Francisco	9	0
94116	San Francisco	26	0
94117	San Francisco	20	4
94118	San Francisco	22	1
94119	San Francisco	1	0
94121	San Francisco	23	0
94122	San Francisco	38	2
94123	San Francisco	10	0
94124	San Francisco	7	0
94127	San Francisco	26	2
94129	San Francisco	10	1
94131	San Francisco	17	0
94132	San Francisco	3	0
94133	San Francisco	20	0
94134	San Francisco	5	1
94137	San Francisco	1	0
94142	San Francisco	1	0
94188	San Francisco	1	0

San Joaquin County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95204	Stockton	10	0
95205	Stockton	8	1
95206	Stockton	5	0
95207	Stockton	37	12
95209	Stockton	8	2
95210	Stockton	3	1
95212	Stockton	2	0
95215	Stockton	1	0
95219	Stockton	5	0
95220	Acampo	4	0
95227	Clements	1	0
95236	Linden	3	1
95237	Lockeford	1	0
95240	Lodi	15	2
95242	Lodi	8	3
95258	Woodbridge	1	0
95269	Stockton	2	1
95290	Stockton	1	0
95304	Banta	1	0
95320	Escalon	4	1
95330	Lathrop	2	0
95336	Manteca	3	0
95337	Manteca	4	1
95366	Ripon	7	0
95376	Tracy	12	1
95377	Tracy	2	0

San Luis Obispo County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
93401	San Luis Obispo	173	3
93402	Los Osos	122	0
93405	San Luis Obispo	103	3
93406	San Luis Obispo	3	0
93420	Arroyo Grande	205	10
93422	Atascadero	183	36
93423	Atascadero	2	0
93424	Avila Beach	1	0
93428	Cambria	64	0
93430	Cayucos	20	2
93432	Creston	3	0
93433	Grover Beach	42	0
93442	Morro Bay	58	0
93443	Morro Bay	1	0
93444	Nipomo	86	0
93445	Oceano	23	0
93446	Paso Robles	157	14
93447	Paso Robles	1	0
93449	Pismo Beach	40	4
93451	San Miguel	10	2
93452	San Simeon	37	18
93453	Santa Margarita	10	0
93465	Templeton	69	17

San Mateo County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
94002	Belmont	86	11
94005	Brisbane	5	0
94010	Burlingame	85	2
94014	Daly City	29	0
94015	Daly City	39	0
94018	El Granada	4	0
94019	Half Moon Bay	38	0
94020	La Honda	9	3
94021	Loma Mar	1	0
94025	Menlo Park	85	21
94026	Menlo Park	1	0
94027	Atherton	50	17
94028	Portola Valley	37	4
94029	Menlo Park	1	0
94030	Millbrae	38	0
94037	Montara	13	0
94038	Moss Beach	16	0
94044	Pacifica	66	1
94060	Pescadero	1	0
94061	Redwood City	37	1
94062	Redwood City	113	26
94063	Redwood City	16	2
94065	Redwood City	14	0
94066	San Bruno	44	3
94070	San Carlos	83	5
94074	San Gregorio	1	0
94080	South San Francisco	92	2
94128	San Francisco	1	0
94303	Palo Alto	20	0
94401	San Mateo	9	0
94402	San Mateo	135	6
94403	San Mateo	68	1
94404	San Mateo	45	0

Santa Barbara County
Radon zone : 1

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
93013	Carpinteria	55	0
93014	Carpinteria	3	1
93067	Summerland	58	29
93101	Santa Barbara	68	1
93102	Santa Barbara	3	0
93103	Santa Barbara	85	9
93105	Santa Barbara	354	97
93106	Santa Barbara	3	0
93107	Santa Barbara	2	0
93108	Santa Barbara	165	26
93109	Santa Barbara	100	3
93110	Santa Barbara	122	9
93111	Santa Barbara	146	11
93116	Goleta	12	3
93117	Goleta	312	48
93118	Goleta	2	0
93120	Santa Barbara	1	0
93130	Santa Barbara	9	4
93140	Santa Barbara	19	2
93150	Santa Barbara	3	1
93160	Santa Barbara	3	0
93190	Santa Barbara	2	0
93427	Buellton	8	0
93434	Guadalupe	1	0
93436	Lompoc	343	115
93437	Lompoc	2	1
93438	Lompoc	13	2
93440	Los Alamos	2	0
93454	Santa Maria	34	2
93455	Santa Maria	56	1
93456	Santa Maria	2	0
93458	Santa Maria	3	0
93460	Santa Ynez	20	2
93463	Solvang	19	1
93464	Solvang	2	0

Santa Clara County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
94022	Los Altos	49	3
94023	Los Altos	6	0
94024	Los Altos	39	0
94040	Mountain View	32	0
94041	Mountain View	11	0
94042	Mountain View	2	0
94043	Mountain View	21	1
94085	Sunnyvale	38	7
94086	Sunnyvale	29	3
94087	Sunnyvale	58	7
94089	Sunnyvale	10	0
94301	Palo Alto	37	7
94304	Palo Alto	3	0
94305	Palo Alto	8	1
94306	Palo Alto	29	3
95002	Alviso	1	0
95008	Campbell	36	2
95014	Cupertino	43	0
95020	Gilroy	14	0
95030	Los Gatos	24	5
95031	Los Gatos	1	0
95032	Los Gatos	33	0
95033	Los Gatos	112	37
95035	Milpitas	29	0
95037	Morgan Hill	21	0
95038	Morgan Hill	2	0
95046	San Martin	5	2
95050	Santa Clara	18	1
95051	Santa Clara	39	0
95054	Santa Clara	9	0
95056	Santa Clara	14	0
95070	Saratoga	55	9
95108	San Jose	2	0
95110	San Jose	4	0
95111	San Jose	5	0
95112	San Jose	15	0
95113	San Jose	5	0
95116	San Jose	4	0
95117	San Jose	19	1
95118	San Jose	27	2
95119	San Jose	2	0
95120	San Jose	28	0
95121	San Jose	7	0
95122	San Jose	6	0
95123	San Jose	33	0
95124	San Jose	23	1
95125	San Jose	69	7
95126	San Jose	48	0
95127	San Jose	20	1
95128	San Jose	18	2
95129	San Jose	20	0
95130	San Jose	4	0
95131	San Jose	21	0
95132	San Jose	9	0
95133	San Jose	3	0
95134	San Jose	5	0
95135	San Jose	5	0
95136	San Jose	3	0
95138	San Jose	9	0
95139	San Jose	4	0
95140	Mount Hamilton	1	0
95148	San Jose	8	0
95150	San Jose	1	1
95151	San Jose	1	1
95158	San Jose	1	0
95160	San Jose	1	0
95164	San Jose	2	0

Santa Cruz County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95001	Aptos	5	0
95003	Aptos	256	9
95005	Ben Lomond	74	21
95006	Boulder Creek	70	6
95010	Capitola	67	1
95017	Davenport	2	0
95018	Felton	96	23
95019	Freedom	8	0
95060	Santa Cruz	482	28
95061	Santa Cruz	2	0
95062	Santa Cruz	255	3
95063	Santa Cruz	4	0
95064	Santa Cruz	19	2
95065	Santa Cruz	102	3
95066	Scotts Valley	154	20
95067	Scotts Valley	1	0
95073	Soquel	94	2
95076	Watsonville	223	1

Shasta County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
96001	Redding	37	0
96002	Redding	23	0
96003	Redding	35	3
96007	Anderson	14	2
96008	Bella Vista	2	0
96013	Burney	5	0
96019	Shasta Lake	6	1
96022	Cottonwood	13	0
96028	Fall River Mills	2	0
96049	Redding	6	4
96051	Lakehead	1	0
96056	McArthur	3	0
96062	Millville	1	0
96065	Montgomery Creek	2	0
96069	Oak Run	1	1
96073	Palo Cedro	5	0
96076	Platina	1	0
96079	Shasta Lake	1	0
96084	Round Mountain	1	0
96087	Shasta	2	0
96088	Shingletown	8	0
96089	Summit City	2	0
96099	Redding	1	0

Sierra County
Radon zone : 2

Zip code	City	Number of tests
96118	Loyalton	1
96124	Calpine	3
96126	Sierraville	1

Siskiyou County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
96023	Dorris	3	0
96025	Dunsmuir	3	0
96027	Etna	3	0
96032	Fort Jones	1	0
96038	Grenada	2	0
96039	Happy Camp	2	0
96044	Hornbrook	1	0
96050	Klamath River	2	0
96057	McCloud	4	0
96064	Montague	5	0
96067	Mount Shasta	16	1
96086	Seiad Valley	1	0
96094	Weed	5	0
96097	Yreka	9	0
96134	Tulelake	6	0

Solano County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
94510	Benicia	17	0
94533	Fairfield	37	0
94534	Fairfield	10	0
94571	Rio Vista	4	0
94585	Suisun City	8	0
94589	Vallejo	10	0
94590	Vallejo	13	0
94591	Vallejo	11	2
95620	Dixon	5	0
95687	Vacaville	29	2
95688	Vacaville	13	0

Sonoma County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
94927	Rohnert Park	1	1
94928	Rohnert Park	14	1
94931	Cotati	7	0
94951	Penngrove	3	0
94952	Petaluma	31	2
94954	Petaluma	15	0
95401	Santa Rosa	26	0
95402	Santa Rosa	4	0
95403	Santa Rosa	10	0
95404	Santa Rosa	19	1
95405	Santa Rosa	14	1
95407	Santa Rosa	18	0
95409	Santa Rosa	16	3
95416	Boyes Hot Springs	2	0
95425	Cloverdale	5	0
95436	Forestville	3	0
95439	Fulton	4	0
95442	Glen Ellen	2	0
95446	Guerneville	1	0
95448	Healdsburg	17	3
95452	Kenwood	2	0
95471	Rio Nido	1	0
95472	Sebastopol	22	0
95473	Sebastopol	3	0
95476	Sonoma	30	0
95486	Villa Grande	2	0
95492	Windsor	15	0
95497	The Sea Ranch	1	0

Stanislaus County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95307	Ceres	3	0
95316	Denair	2	0
95323	Hickman	2	0
95326	Hughson	3	0
95329	La Grange	33	15
95350	Modesto	13	0
95351	Modesto	9	1
95355	Modesto	19	2
95356	Modesto	9	2
95357	Modesto	1	0
95358	Modesto	3	0
95360	Newman	3	0
95361	Oakdale	24	1
95363	Patterson	1	0
95367	Riverbank	6	4
95380	Turlock	8	0
95382	Turlock	2	0
95386	Waterford	1	0

Sutter County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95659	Nicolaus	1	0
95674	Rio Oso	3	0
95953	Live Oak	7	0
95991	Yuba City	19	3
95992	Yuba City	1	0
95993	Yuba City	12	3

Tehama County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
96021	Corning	6	0
96055	Los Molinos	2	0
96059	Manton	1	0
96063	Mineral	1	0
96080	Red Bluff	19	1
96090	Tehama	1	0

Trinity County
Radon zone : 3

Zip code	City	Number of tests
95563	Salyer	2
95595	Zenia	1
96010	Big Bar	1
96041	Hayfork	3
96052	Lewiston	2
96091	Trinity Center	2
96093	Weaverville	2

Tulare County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
93207	California Hot Springs	6	2
93218	Ducor	1	0
93219	Earlimart	1	0
93221	Exeter	7	1
93223	Farmersville	2	0
93235	Ivanhoe	2	0
93237	Kaweah	1	0
93244	Lemon Cove	2	0
93247	Lindsay	9	0
93257	Porterville	35	0
93261	Richgrove	1	0
93265	Springville	20	3
93267	Strathmore	3	0
93270	Terra Bella	13	9
93271	Three Rivers	24	16
93272	Tipton	1	0
93274	Tulare	19	1
93277	Visalia	48	11
93279	Visalia	2	0
93286	Woodlake	1	0
93291	Visalia	20	1
93292	Visalia	9	1
93603	Badger	1	0
93615	Cutler	1	0
93618	Dinuba	20	0
93647	Orosi	1	0

Tuolumne County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95305	Big Oak Flat	7	1
95309	Chinese Camp	1	0
95310	Columbia	63	23
95321	Groveland	162	73
95327	Jamestown	68	18
95335	Long Barn	20	9
95346	Mi Wuk Village	47	21
95347	Moccasin	1	1
95364	Pinecrest	11	3
95370	Sonora	625	203
95372	Soulsbyville	47	11
95373	Standard	3	0
95375	Strawberry	6	3
95379	Tuolumne	72	31
95383	Twain Harte	159	61

Ventura County
Radon zone : 1

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
91319	Newbury Park	1	0
91320	Newbury Park	216	11
91358	Thousand Oaks	2	0
91359	Thousand Oaks	15	0
91360	Thousand Oaks	231	18
91361	Westlake Village	292	23
91362	Thousand Oaks	563	77
91377	Oak Park	120	15
93001	Ventura	67	8
93002	Ventura	4	0
93003	Ventura	139	6
93004	Ventura	59	0
93005	Ventura	2	0
93006	Ventura	2	0
93010	Camarillo	127	11
93011	Camarillo	8	0
93012	Camarillo	112	2
93015	Fillmore	23	5
93016	Fillmore	4	0
93020	Moorpark	2	0
93021	Moorpark	252	11
93022	Oak View	114	3
93023	Ojai	251	8
93024	Ojai	2	0
93030	Oxnard	38	1
93031	Oxnard	4	0
93032	Oxnard	1	0
93033	Oxnard	12	0
93035	Oxnard	22	0
93036	Oxnard	10	0
93041	Port Hueneme	23	0
93060	Santa Paula	61	2
93061	Santa Paula	3	1
93062	Simi Valley	30	0
93063	Simi Valley	144	7
93065	Simi Valley	259	11
93066	Somis	17	5

Yolo County
Radon zone : 3

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95605	Broderick	4	0
95607	Capay	1	0
95612	Clarksburg	2	0
95616	Davis	47	2
95618	El Macero	16	0
95627	Esparto	1	0
95645	Knights Landing	1	0
95691	West Sacramento	37	0
95695	Woodland	22	0
95698	Zamora	1	0
95776	Woodland	2	0

Yuba County
Radon zone : 2

Zip code	City	Number of tests	Number of tests >= 4 pCi/L
95692	Wheatland	2	1
95901	Marysville	20	0
95903	Beale AFB	1	0
95918	Browns Valley	2	0
95919	Brownsville	2	0
95922	Camptonville	2	0
95977	Smartville	1	0

Back to the top

Business Search - 14 Million verified businesses

City-data.com does not guarantee the accuracy or timeliness of any information on this site. Use at your own risk.
Some parts © 2024 Advameg, Inc.