Pennsylvania Cities Ranked by Indoor Radon Levels

Measured averages from Airthings devices across Pennsylvania, USA. Action level: 4 pCi/L — the threshold at which remediation is recommended.

Prospect has the highest measured indoor radon in Pennsylvania at 17.6 pCi/L, based on Airthings measurements across 448 cities.

Updated August 16, 2026

Highest city

17.6pCi/L

Prospect

Pennsylvania city average

4.5pCi/L

across 448 cities

Above action level

202/ 448

cities

Pennsylvania Cities Ranked by Indoor Radon Levels
#	Location	Avg level	Monitors	vs action level
1	Prospect	17.6 pCi/L	6	4.4× over
2	Jacobus	17.3 pCi/L	7	4.3× over
3	Zion	16.4 pCi/L	10	4.1× over
4	Russellton	15.7 pCi/L	9	3.9× over
5	Kutztown	15.6 pCi/L	7	3.9× over
6	Greenville	15.0 pCi/L	8	3.8× over
7	Palmerton	14.1 pCi/L	7	3.5× over
8	Manheim	13.6 pCi/L	13	3.4× over
9	Apollo	13.5 pCi/L	6	3.4× over
10	Akron	13.4 pCi/L	6	3.3× over
11	Shippensburg	13.2 pCi/L	8	3.3× over
12	Bloomsburg	12.9 pCi/L	8	3.2× over
13	Robesonia	12.4 pCi/L	7	3.1× over
14	Industry	12.1 pCi/L	15	3.0× over
15	Cherryville	11.7 pCi/L	7	2.9× over
16	Shrewsbury	11.7 pCi/L	12	2.9× over
17	Hughesville	11.6 pCi/L	6	2.9× over
18	Quarryville	11.5 pCi/L	9	2.9× over
19	Strasburg	11.3 pCi/L	10	2.8× over
20	Centre Hall	11.3 pCi/L	8	2.8× over
21	Wrightsville	11.2 pCi/L	7	2.8× over
22	Stewartstown	10.7 pCi/L	25	2.7× over
23	Factoryville	10.6 pCi/L	7	2.6× over
24	Spry	10.3 pCi/L	15	2.6× over
25	Rutherford	10.2 pCi/L	11	2.6× over
26	Mountville	10.2 pCi/L	7	2.6× over
27	Honey Brook	10.1 pCi/L	7	2.5× over
28	Garden View	10.0 pCi/L	8	2.5× over
29	Beaver Falls	9.9 pCi/L	13	2.5× over
30	Windsor	9.9 pCi/L	12	2.5× over
31	Cornwall	9.8 pCi/L	11	2.5× over
32	Glen Rock	9.8 pCi/L	8	2.4× over
33	Sinking Spring	9.8 pCi/L	11	2.4× over
34	Riverside	9.7 pCi/L	13	2.4× over
35	Parkville	9.4 pCi/L	13	2.3× over
36	Effort	9.3 pCi/L	7	2.3× over
37	Susquehanna Trails	9.3 pCi/L	24	2.3× over
38	Palmyra	9.2 pCi/L	15	2.3× over
39	Red Lion	9.1 pCi/L	16	2.3× over
40	Shanor-Northvue	8.9 pCi/L	12	2.2× over
41	Lititz	8.7 pCi/L	56	2.2× over
42	Penbrook	8.7 pCi/L	6	2.2× over
43	Lake Wynonah	8.5 pCi/L	6	2.1× over
44	Shiremanstown	8.4 pCi/L	13	2.1× over
45	East Petersburg	8.2 pCi/L	41	2.1× over
46	Marysville	8.2 pCi/L	11	2.1× over
47	Colonial Park	8.1 pCi/L	6	2.0× over
48	Pine Grove Mills	8.1 pCi/L	17	2.0× over
49	Millersburg	8.1 pCi/L	8	2.0× over
50	Freeport	8.0 pCi/L	6	2.0× over
51	Summit Hill	7.9 pCi/L	6	2.0× over
52	Montrose	7.8 pCi/L	9	2.0× over
53	Hummelstown	7.8 pCi/L	24	2.0× over
54	Mount Joy	7.8 pCi/L	15	1.9× over
55	Mount Holly Springs	7.8 pCi/L	10	1.9× over
56	Skyline View	7.7 pCi/L	17	1.9× over
57	Light Street	7.6 pCi/L	10	1.9× over
58	Carnegie	7.6 pCi/L	14	1.9× over
59	Elysburg	7.5 pCi/L	9	1.9× over
60	Jefferson Hills	7.5 pCi/L	19	1.9× over
61	Nazareth	7.5 pCi/L	26	1.9× over
62	Paoli	7.3 pCi/L	32	1.8× over
63	Breinigsville	7.2 pCi/L	33	1.8× over
64	Calumet	7.2 pCi/L	6	1.8× over
65	Lakemont	7.1 pCi/L	6	1.8× over
66	Allentown	7.1 pCi/L	20	1.8× over
67	Cleona	6.9 pCi/L	7	1.7× over
68	Myerstown	6.9 pCi/L	8	1.7× over
69	Northumberland	6.9 pCi/L	7	1.7× over
70	Valley View	6.9 pCi/L	7	1.7× over
71	Houserville	6.9 pCi/L	11	1.7× over
72	Fountain Hill	6.8 pCi/L	27	1.7× over
73	Mifflintown	6.8 pCi/L	6	1.7× over
74	Dorneyville	6.8 pCi/L	31	1.7× over
75	Mechanicsburg	6.7 pCi/L	91	1.7× over
76	Zelienople	6.7 pCi/L	33	1.7× over
77	Ben Avon	6.7 pCi/L	13	1.7× over
78	Millvale	6.6 pCi/L	17	1.6× over
79	Brodheadsville	6.6 pCi/L	8	1.6× over
80	Murrysville	6.5 pCi/L	38	1.6× over
81	Emmaus	6.4 pCi/L	25	1.6× over
82	Wernersville	6.4 pCi/L	10	1.6× over
83	Ellport	6.3 pCi/L	9	1.6× over
84	Treasure Lake	6.3 pCi/L	14	1.6× over
85	Waynesboro	6.3 pCi/L	12	1.6× over
86	Chambersburg	6.3 pCi/L	25	1.6× over
87	Saylorsburg	6.3 pCi/L	15	1.6× over
88	West View	6.3 pCi/L	38	1.6× over
89	Bath	6.2 pCi/L	22	1.6× over
90	Greensburg	6.2 pCi/L	20	1.5× over
91	York	6.2 pCi/L	26	1.5× over
92	Tunkhannock	6.1 pCi/L	6	1.5× over
93	Back Mountain	6.0 pCi/L	8	1.5× over
94	Mechanicsville	6.0 pCi/L	8	1.5× over
95	New Holland	6.0 pCi/L	8	1.5× over
96	Annville	5.9 pCi/L	13	1.5× over
97	Spring Grove	5.9 pCi/L	20	1.5× over
98	Saxonburg	5.9 pCi/L	17	1.5× over
99	Progress	5.9 pCi/L	7	1.5× over
100	Mars	5.8 pCi/L	41	1.5× over
101	Allison Park	5.8 pCi/L	59	1.5× over
102	Bradford Woods	5.8 pCi/L	103	1.5× over
103	Lower Allen	5.8 pCi/L	10	1.4× over
104	Lawson Heights	5.8 pCi/L	6	1.4× over
105	Boalsburg	5.8 pCi/L	19	1.4× over
106	Lebanon	5.7 pCi/L	8	1.4× over
107	Horsham	5.7 pCi/L	20	1.4× over
108	Biglerville	5.6 pCi/L	6	1.4× over
109	Chicora	5.6 pCi/L	6	1.4× over
110	Trexlertown	5.6 pCi/L	28	1.4× over
111	Saint Marys	5.6 pCi/L	7	1.4× over
112	Youngsville	5.5 pCi/L	7	1.4× over
113	Middletown	5.5 pCi/L	37	1.4× over
114	Guilford	5.5 pCi/L	13	1.4× over
115	Landisville	5.4 pCi/L	19	1.4× over
116	Schlusser	5.4 pCi/L	12	1.4× over
117	Elizabethtown	5.3 pCi/L	14	1.3× over
118	Hershey	5.3 pCi/L	27	1.3× over
119	Monroeville	5.3 pCi/L	26	1.3× over
120	South Coatesville	5.3 pCi/L	7	1.3× over
121	Coatesville	5.3 pCi/L	26	1.3× over
122	Paxtonia	5.3 pCi/L	8	1.3× over
123	Loganville	5.3 pCi/L	6	1.3× over
124	Homeacre-Lyndora	5.3 pCi/L	7	1.3× over
125	Mercersburg	5.3 pCi/L	7	1.3× over
126	Clarks Summit	5.3 pCi/L	24	1.3× over
127	Stonybrook	5.3 pCi/L	16	1.3× over
128	Stormstown	5.3 pCi/L	12	1.3× over
129	Linntown	5.2 pCi/L	8	1.3× over
130	McMurray	5.2 pCi/L	36	1.3× over
131	Bally	5.2 pCi/L	9	1.3× over
132	Millersville	5.2 pCi/L	20	1.3× over
133	Parkesburg	5.2 pCi/L	22	1.3× over
134	Easton	5.2 pCi/L	35	1.3× over
135	Ambridge	5.1 pCi/L	7	1.3× over
136	Cecil-Bishop	5.1 pCi/L	9	1.3× over
137	Spring City	5.1 pCi/L	30	1.3× over
138	Boiling Springs	5.0 pCi/L	19	1.3× over
139	Etna	5.0 pCi/L	12	1.3× over
140	Franklin Park	5.0 pCi/L	65	1.3× over
141	Lancaster	5.0 pCi/L	82	1.2× over
142	Emsworth	5.0 pCi/L	16	1.2× over
143	Lawnton	4.9 pCi/L	11	1.2× over
144	Bellefonte	4.9 pCi/L	18	1.2× over
145	Willow Street	4.9 pCi/L	12	1.2× over
146	Monaca	4.8 pCi/L	8	1.2× over
147	Camp Hill	4.8 pCi/L	21	1.2× over
148	Enola	4.8 pCi/L	15	1.2× over
149	Aliquippa	4.7 pCi/L	7	1.2× over
150	Hanover	4.7 pCi/L	13	1.2× over
151	Swissvale	4.7 pCi/L	11	1.2× over
152	Berwyn	4.7 pCi/L	47	1.2× over
153	Butler	4.7 pCi/L	16	1.2× over
154	Ephrata	4.6 pCi/L	17	1.2× over
155	Stony Creek Mills	4.6 pCi/L	6	1.2× over
156	Oreland	4.6 pCi/L	26	1.1× over
157	Wescosville	4.6 pCi/L	30	1.1× over
158	Carnot-Moon	4.6 pCi/L	28	1.1× over
159	Coraopolis	4.6 pCi/L	16	1.1× over
160	Arlington Heights	4.5 pCi/L	16	1.1× over
161	Radnor	4.5 pCi/L	48	1.1× over
162	Churchill	4.5 pCi/L	24	1.1× over
163	Weigelstown	4.5 pCi/L	7	1.1× over
164	Edgewood	4.5 pCi/L	8	1.1× over
165	Stroudsburg	4.5 pCi/L	9	1.1× over
166	Gold Key Lake	4.5 pCi/L	15	1.1× over
167	Canonsburg	4.5 pCi/L	38	1.1× over
168	Northampton	4.5 pCi/L	7	1.1× over
169	Sewickley	4.5 pCi/L	16	1.1× over
170	Mansfield	4.4 pCi/L	7	1.1× over
171	Churchville	4.4 pCi/L	11	1.1× over
172	Cranberry Township	4.4 pCi/L	20	1.1× over
173	Schnecksville	4.4 pCi/L	32	1.1× over
174	Eastlawn Gardens	4.4 pCi/L	10	1.1× over
175	Littlestown	4.4 pCi/L	10	1.1× over
176	Oakmont	4.4 pCi/L	11	1.1× over
177	Hokendauqua	4.4 pCi/L	6	1.1× over
178	Pleasant Hills	4.4 pCi/L	13	1.1× over
179	Burgettstown	4.3 pCi/L	8	1.1× over
180	Dillsburg	4.3 pCi/L	23	1.1× over
181	Boyertown	4.3 pCi/L	7	1.1× over
182	Nixon	4.3 pCi/L	7	1.1× over
183	Fernway	4.3 pCi/L	42	1.1× over
184	Greencastle	4.2 pCi/L	12	1.1× over
185	Level Green	4.2 pCi/L	7	1.1× over
186	Chevy Chase Heights	4.2 pCi/L	8	1.1× over
187	Rennerdale	4.2 pCi/L	13	1.1× over
188	Elverson	4.2 pCi/L	22	1.0× over
189	Fleetwood	4.2 pCi/L	11	1.0× over
190	Latrobe	4.2 pCi/L	11	1.0× over
191	Fox Chapel	4.2 pCi/L	35	1.0× over
192	Plum	4.2 pCi/L	10	1.0× over
193	Dover	4.1 pCi/L	18	1.0× over
194	Ambler	4.1 pCi/L	29	1.0× over
195	Glenside	4.1 pCi/L	16	1.0× over
196	Jersey Shore	4.1 pCi/L	15	1.0× over
197	Conyngham	4.1 pCi/L	12	1.0× over
198	Gastonville	4.1 pCi/L	13	1.0× over
199	Raubsville	4.0 pCi/L	13	1.0× over
200	Crafton	4.0 pCi/L	8	1.0× over
201	Emigsville	4.0 pCi/L	13	1.0× over
202	Lemont	4.0 pCi/L	6	1.0× over
✓ Below EPA action level (4 pCi/L)
203	Amity Gardens	4.0 pCi/L	14	1.0× under
204	Muse	4.0 pCi/L	7	1.0× under
205	Mountain Top	4.0 pCi/L	12	1.0× under
206	Spring House	4.0 pCi/L	28	1.0× under
207	Matamoras	3.9 pCi/L	13	1.0× under
208	Seven Fields	3.9 pCi/L	35	1.0× under
209	Downingtown	3.9 pCi/L	100	1.0× under
210	State College	3.9 pCi/L	59	1.0× under
211	Carlisle	3.8 pCi/L	21	1.0× under
212	Gibsonia	3.8 pCi/L	41	1.0× under
213	New Cumberland	3.8 pCi/L	9	1.0× under
214	New Freedom	3.8 pCi/L	32	1.0× under
215	Wyomissing Hills	3.8 pCi/L	11	0.9× under
216	Jenkintown	3.8 pCi/L	40	0.9× under
217	Harrisburg	3.8 pCi/L	27	0.9× under
218	East Stroudsburg	3.7 pCi/L	25	0.9× under
219	Eagleville	3.7 pCi/L	17	0.9× under
220	Meridian	3.7 pCi/L	8	0.9× under
221	Valley Green	3.7 pCi/L	15	0.9× under
222	North Wales	3.7 pCi/L	50	0.9× under
223	Lawrence Park	3.7 pCi/L	17	0.9× under
224	Beaver	3.6 pCi/L	18	0.9× under
225	Wayne	3.6 pCi/L	41	0.9× under
226	Indiana	3.6 pCi/L	6	0.9× under
227	South Uniontown	3.6 pCi/L	6	0.9× under
228	Ingram	3.6 pCi/L	9	0.9× under
229	Fox Run	3.5 pCi/L	12	0.9× under
230	Hemlock Farms	3.5 pCi/L	11	0.9× under
231	Sanatoga	3.5 pCi/L	14	0.9× under
232	Fairview	3.5 pCi/L	15	0.9× under
233	Thorndale	3.5 pCi/L	32	0.9× under
234	East Berlin	3.5 pCi/L	6	0.9× under
235	Bryn Mawr	3.5 pCi/L	54	0.9× under
236	Caln	3.5 pCi/L	25	0.9× under
237	Jim Thorpe	3.5 pCi/L	8	0.9× under
238	McDonald	3.5 pCi/L	6	0.9× under
239	Enlow	3.5 pCi/L	13	0.9× under
240	Bethlehem	3.5 pCi/L	61	0.9× under
241	Pottsville	3.4 pCi/L	6	0.9× under
242	Palmer Heights	3.4 pCi/L	26	0.9× under
243	Pocono Ranch Lands	3.4 pCi/L	13	0.9× under
244	Richboro	3.4 pCi/L	42	0.9× under
245	Gettysburg	3.4 pCi/L	24	0.9× under
246	Tatamy	3.4 pCi/L	23	0.9× under
247	Milford	3.4 pCi/L	15	0.8× under
248	Pennsburg	3.4 pCi/L	9	0.8× under
249	Washington	3.4 pCi/L	19	0.8× under
250	Media	3.4 pCi/L	53	0.8× under
251	Newtown Grant	3.4 pCi/L	26	0.8× under
252	Throop	3.4 pCi/L	8	0.8× under
253	Scranton	3.4 pCi/L	16	0.8× under
254	Bridgeville	3.4 pCi/L	34	0.8× under
255	Campbelltown	3.3 pCi/L	12	0.8× under
256	Conshohocken	3.3 pCi/L	27	0.8× under
257	Langhorne	3.3 pCi/L	14	0.8× under
258	South Park Township	3.3 pCi/L	9	0.8× under
259	Tinicum	3.3 pCi/L	11	0.8× under
260	Brittany Farms-Highlands	3.3 pCi/L	42	0.8× under
261	Chalfont	3.3 pCi/L	17	0.8× under
262	Hollidaysburg	3.3 pCi/L	13	0.8× under
263	McSherrystown	3.3 pCi/L	6	0.8× under
264	Oakdale	3.3 pCi/L	18	0.8× under
265	Yorklyn	3.2 pCi/L	13	0.8× under
266	Bakerstown	3.2 pCi/L	7	0.8× under
267	Birdsboro	3.2 pCi/L	6	0.8× under
268	Lake Meade	3.2 pCi/L	8	0.8× under
269	New Hope	3.2 pCi/L	39	0.8× under
270	Skippack	3.2 pCi/L	16	0.8× under
271	Sturgeon	3.2 pCi/L	8	0.8× under
272	Wyomissing	3.1 pCi/L	13	0.8× under
273	Grove City	3.1 pCi/L	6	0.8× under
274	Shiloh	3.1 pCi/L	17	0.8× under
275	Trooper	3.1 pCi/L	8	0.8× under
276	Macungie	3.1 pCi/L	40	0.8× under
277	Manor	3.1 pCi/L	16	0.8× under
278	Moscow	3.1 pCi/L	14	0.8× under
279	Village Shires	3.1 pCi/L	16	0.8× under
280	Glenshaw	3.0 pCi/L	38	0.8× under
281	Evans City	3.0 pCi/L	10	0.8× under
282	Wilkinsburg	3.0 pCi/L	49	0.7× under
283	Edgeworth	2.9 pCi/L	16	0.7× under
284	Upper Saint Clair	2.9 pCi/L	30	0.7× under
285	Coopersburg	2.9 pCi/L	63	0.7× under
286	North Catasauqua	2.9 pCi/L	8	0.7× under
287	Spinnerstown	2.9 pCi/L	6	0.7× under
288	Harleysville	2.9 pCi/L	26	0.7× under
289	Imperial	2.9 pCi/L	7	0.7× under
290	Laporte	2.9 pCi/L	10	0.7× under
291	Plumsteadville	2.9 pCi/L	29	0.7× under
292	Towamensing Trails	2.9 pCi/L	19	0.7× under
293	Williamsport	2.9 pCi/L	7	0.7× under
294	Devon	2.8 pCi/L	26	0.7× under
295	Mifflinburg	2.8 pCi/L	9	0.7× under
296	Chester Springs	2.8 pCi/L	83	0.7× under
297	Cheswick	2.8 pCi/L	6	0.7× under
298	Bellevue	2.8 pCi/L	18	0.7× under
299	Woxall	2.8 pCi/L	10	0.7× under
300	Altoona	2.8 pCi/L	15	0.7× under
301	Delmont	2.8 pCi/L	16	0.7× under
302	Saw Creek	2.8 pCi/L	42	0.7× under
303	Thompsonville	2.8 pCi/L	18	0.7× under
304	Hatfield	2.8 pCi/L	21	0.7× under
305	Pittsburgh	2.8 pCi/L	97	0.7× under
306	Morrisville	2.7 pCi/L	24	0.7× under
307	Penndel	2.7 pCi/L	6	0.7× under
308	Sharpsburg	2.7 pCi/L	30	0.7× under
309	Wolfdale	2.7 pCi/L	11	0.7× under
310	Pocono Pines	2.7 pCi/L	15	0.7× under
311	Harleigh	2.7 pCi/L	10	0.7× under
312	Mountainhome	2.7 pCi/L	16	0.7× under
313	Shavertown	2.7 pCi/L	13	0.7× under
314	Paxtang	2.7 pCi/L	6	0.7× under
315	Trappe	2.7 pCi/L	23	0.7× under
316	Halfway House	2.7 pCi/L	9	0.7× under
317	Jeannette	2.6 pCi/L	7	0.7× under
318	Gilbertsville	2.6 pCi/L	19	0.7× under
319	Hellertown	2.6 pCi/L	23	0.7× under
320	Honesdale	2.6 pCi/L	26	0.7× under
321	Wellsboro	2.6 pCi/L	7	0.7× under
322	Doylestown	2.6 pCi/L	128	0.7× under
323	Green Tree	2.6 pCi/L	22	0.7× under
324	Schwenksville	2.6 pCi/L	21	0.7× under
325	Plymouth Meeting	2.6 pCi/L	24	0.7× under
326	Fairless Hills	2.6 pCi/L	18	0.7× under
327	West Conshohocken	2.6 pCi/L	11	0.6× under
328	Telford	2.6 pCi/L	13	0.6× under
329	New Britain	2.6 pCi/L	22	0.6× under
330	Parkside	2.6 pCi/L	14	0.6× under
331	West Chester	2.6 pCi/L	121	0.6× under
332	Morton	2.5 pCi/L	9	0.6× under
333	Brackenridge	2.5 pCi/L	9	0.6× under
334	Pottsgrove	2.5 pCi/L	12	0.6× under
335	Dresher	2.5 pCi/L	15	0.6× under
336	Hatboro	2.5 pCi/L	18	0.6× under
337	Dormont	2.5 pCi/L	41	0.6× under
338	Exton	2.5 pCi/L	90	0.6× under
339	King of Prussia	2.5 pCi/L	40	0.6× under
340	South Greensburg	2.5 pCi/L	8	0.6× under
341	Verona	2.5 pCi/L	7	0.6× under
342	East Bangor	2.5 pCi/L	10	0.6× under
343	Old Forge	2.5 pCi/L	10	0.6× under
344	Wyncote	2.5 pCi/L	14	0.6× under
345	Homestead	2.5 pCi/L	54	0.6× under
346	Park Forest Village	2.4 pCi/L	31	0.6× under
347	Lima	2.4 pCi/L	34	0.6× under
348	Audubon	2.4 pCi/L	13	0.6× under
349	Ebensburg	2.4 pCi/L	7	0.6× under
350	Kulpsville	2.4 pCi/L	30	0.6× under
351	McGovern	2.4 pCi/L	18	0.6× under
352	Slippery Rock	2.4 pCi/L	6	0.6× under
353	Waymart	2.4 pCi/L	7	0.6× under
354	East Washington	2.4 pCi/L	10	0.6× under
355	Quakertown	2.4 pCi/L	20	0.6× under
356	Bristol	2.4 pCi/L	8	0.6× under
357	Tannersville	2.4 pCi/L	21	0.6× under
358	Broomall	2.3 pCi/L	46	0.6× under
359	Chesterbrook	2.3 pCi/L	23	0.6× under
360	Kenilworth	2.3 pCi/L	7	0.6× under
361	Evansburg	2.3 pCi/L	6	0.6× under
362	Trevose	2.3 pCi/L	12	0.6× under
363	Irwin	2.3 pCi/L	24	0.6× under
364	Warminster Heights	2.3 pCi/L	12	0.6× under
365	Trafford	2.3 pCi/L	6	0.6× under
366	Hulmeville	2.3 pCi/L	19	0.6× under
367	Wyndmoor	2.3 pCi/L	65	0.6× under
368	Malvern	2.2 pCi/L	77	0.6× under
369	West Norriton	2.2 pCi/L	28	0.6× under
370	Dalton	2.2 pCi/L	6	0.6× under
371	Orwigsburg	2.2 pCi/L	10	0.6× under
372	Maple Glen	2.2 pCi/L	28	0.6× under
373	Yardley	2.2 pCi/L	52	0.6× under
374	Fellsburg	2.2 pCi/L	6	0.6× under
375	Limerick	2.2 pCi/L	21	0.5× under
376	Souderton	2.2 pCi/L	8	0.5× under
377	Hawley	2.2 pCi/L	40	0.5× under
378	Woodside	2.2 pCi/L	35	0.5× under
379	Ivyland	2.2 pCi/L	51	0.5× under
380	Erie	2.2 pCi/L	37	0.5× under
381	Somerset	2.2 pCi/L	7	0.5× under
382	Dupont	2.1 pCi/L	7	0.5× under
383	New Castle	2.1 pCi/L	8	0.5× under
384	Bloomfield	2.1 pCi/L	67	0.5× under
385	Dublin	2.1 pCi/L	11	0.5× under
386	East York	2.1 pCi/L	9	0.5× under
387	Stowe	2.1 pCi/L	13	0.5× under
388	Swarthmore	2.1 pCi/L	26	0.5× under
389	Sunrise Lake	2.1 pCi/L	11	0.5× under
390	Bryn Athyn	2.1 pCi/L	25	0.5× under
391	Whitehall	2.0 pCi/L	10	0.5× under
392	Montgomeryville	2.0 pCi/L	33	0.5× under
393	Mount Oliver	2.0 pCi/L	20	0.5× under
394	Mount Lebanon	2.0 pCi/L	39	0.5× under
395	Penn Wynne	2.0 pCi/L	26	0.5× under
396	Springfield	2.0 pCi/L	20	0.5× under
397	Village Green-Green Ridge	2.0 pCi/L	12	0.5× under
398	Bethel Park	2.0 pCi/L	18	0.5× under
399	Bedminster	1.9 pCi/L	6	0.5× under
400	Blue Bell	1.9 pCi/L	21	0.5× under
401	Chester Heights	1.9 pCi/L	41	0.5× under
402	Lampeter	1.9 pCi/L	14	0.5× under
403	Rockledge	1.9 pCi/L	38	0.5× under
404	Ligonier	1.9 pCi/L	8	0.5× under
405	Jacksonwald	1.9 pCi/L	12	0.5× under
406	Collegeville	1.9 pCi/L	31	0.5× under
407	Harveys Lake	1.9 pCi/L	6	0.5× under
408	Newtown	1.9 pCi/L	48	0.5× under
409	Blandon	1.8 pCi/L	13	0.5× under
410	Lansdale	1.8 pCi/L	24	0.5× under
411	Lewisburg	1.8 pCi/L	17	0.5× under
412	Sellersville	1.8 pCi/L	9	0.5× under
413	Mount Cobb	1.8 pCi/L	7	0.4× under
414	Oxford	1.8 pCi/L	18	0.4× under
415	Perkasie	1.8 pCi/L	19	0.4× under
416	Forest City	1.8 pCi/L	6	0.4× under
417	Pottstown	1.8 pCi/L	6	0.4× under
418	Levittown	1.8 pCi/L	7	0.4× under
419	Drexel Hill	1.8 pCi/L	32	0.4× under
420	Narberth	1.7 pCi/L	45	0.4× under
421	Ardmore	1.7 pCi/L	53	0.4× under
422	Castle Shannon	1.7 pCi/L	14	0.4× under
423	Feasterville	1.7 pCi/L	14	0.4× under
424	Royersford	1.7 pCi/L	24	0.4× under
425	Fairchance	1.7 pCi/L	6	0.4× under
426	Phoenixville	1.7 pCi/L	66	0.4× under
427	Flourtown	1.6 pCi/L	7	0.4× under
428	Heidelberg	1.6 pCi/L	17	0.4× under
429	West Grove	1.6 pCi/L	31	0.4× under
430	Eddington	1.6 pCi/L	6	0.4× under
431	Aspinwall	1.6 pCi/L	41	0.4× under
432	Willow Grove	1.5 pCi/L	11	0.4× under
433	McKees Rocks	1.5 pCi/L	8	0.4× under
434	Bala-Cynwyd	1.4 pCi/L	71	0.4× under
435	Kennett Square	1.4 pCi/L	37	0.4× under
436	Avondale	1.4 pCi/L	12	0.3× under
437	Norristown	1.3 pCi/L	19	0.3× under
438	Hughestown	1.3 pCi/L	6	0.3× under
439	Brookhaven	1.3 pCi/L	6	0.3× under
440	Ancient Oaks	1.3 pCi/L	7	0.3× under
441	Millbourne	1.2 pCi/L	21	0.3× under
442	Bridgeport	1.2 pCi/L	39	0.3× under
443	Philadelphia	1.2 pCi/L	300	0.3× under
444	Meadville	1.1 pCi/L	9	0.3× under
445	Mount Pocono	1.1 pCi/L	8	0.3× under
446	Cornwells Heights	1.0 pCi/L	9	0.2× under
447	Bradford	0.9 pCi/L	8	0.2× under
448	Dunmore	0.9 pCi/L	10	0.2× under

See USA cities ranked by radon level See all States ranked by radon level