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.

Duncannon has the highest measured indoor radon in Pennsylvania at 25.5 pCi/L, based on Airthings measurements across 512 cities.

Updated October 25, 2026

Highest city

25.5pCi/L

Duncannon

Pennsylvania city average

4.6pCi/L

across 512 cities

Above action level

235/ 512

cities

Pennsylvania Cities Ranked by Indoor Radon Levels
#	Location	Avg level	vs action level
1	Duncannon	25.5 pCi/L	6.4× over
2	Prospect	17.6 pCi/L	4.4× over
3	Jacobus	17.3 pCi/L	4.3× over
4	Zion	16.4 pCi/L	4.1× over
5	Sand Hill	15.9 pCi/L	4.0× over
6	Greenville	15.0 pCi/L	3.8× over
7	Russellton	14.9 pCi/L	3.7× over
8	Palmerton	14.1 pCi/L	3.5× over
9	Apollo	13.5 pCi/L	3.4× over
10	Akron	13.4 pCi/L	3.3× over
11	Kutztown	13.3 pCi/L	3.3× over
12	Georgetown	13.2 pCi/L	3.3× over
13	Industry	13.2 pCi/L	3.3× over
14	Shippensburg	13.2 pCi/L	3.3× over
15	Manheim	13.2 pCi/L	3.3× over
16	Grill	13.1 pCi/L	3.3× over
17	Bloomsburg	12.9 pCi/L	3.2× over
18	Sun Valley	12.8 pCi/L	3.2× over
19	Robesonia	12.4 pCi/L	3.1× over
20	West Hills	12.0 pCi/L	3.0× over
21	DuBois	11.9 pCi/L	3.0× over
22	Cherryville	11.7 pCi/L	2.9× over
23	Lebanon South	11.7 pCi/L	2.9× over
24	Shrewsbury	11.7 pCi/L	2.9× over
25	Hughesville	11.6 pCi/L	2.9× over
26	Centre Hall	11.3 pCi/L	2.8× over
27	Leesport	11.3 pCi/L	2.8× over
28	Cementon	11.2 pCi/L	2.8× over
29	Strasburg	11.2 pCi/L	2.8× over
30	Wrightsville	11.2 pCi/L	2.8× over
31	Stewartstown	10.7 pCi/L	2.7× over
32	Factoryville	10.6 pCi/L	2.6× over
33	Quarryville	10.5 pCi/L	2.6× over
34	Rutherford	10.2 pCi/L	2.6× over
35	Spry	10.1 pCi/L	2.5× over
36	Mountville	10.0 pCi/L	2.5× over
37	Beaver Falls	9.9 pCi/L	2.5× over
38	Windsor	9.9 pCi/L	2.5× over
39	Glen Rock	9.8 pCi/L	2.4× over
40	Sinking Spring	9.8 pCi/L	2.4× over
41	Riverside	9.7 pCi/L	2.4× over
42	Jermyn	9.7 pCi/L	2.4× over
43	Shanor-Northvue	9.5 pCi/L	2.4× over
44	West Lawn	9.4 pCi/L	2.4× over
45	Lewistown	9.4 pCi/L	2.3× over
46	Effort	9.3 pCi/L	2.3× over
47	Cornwall	8.9 pCi/L	2.2× over
48	Smethport	8.9 pCi/L	2.2× over
49	Parkville	8.9 pCi/L	2.2× over
50	Penbrook	8.7 pCi/L	2.2× over
51	Brookville	8.7 pCi/L	2.2× over
52	Susquehanna Trails	8.5 pCi/L	2.1× over
53	Lititz	8.5 pCi/L	2.1× over
54	Palmyra	8.5 pCi/L	2.1× over
55	Red Lion	8.4 pCi/L	2.1× over
56	Shiremanstown	8.4 pCi/L	2.1× over
57	East Petersburg	8.2 pCi/L	2.1× over
58	Pine Grove Mills	8.1 pCi/L	2.0× over
59	Millersburg	8.1 pCi/L	2.0× over
60	Freeport	8.0 pCi/L	2.0× over
61	Marysville	8.0 pCi/L	2.0× over
62	Summit Hill	7.9 pCi/L	2.0× over
63	Cressona	7.9 pCi/L	2.0× over
64	Valley View	7.9 pCi/L	2.0× over
65	Montrose	7.8 pCi/L	2.0× over
66	Garden View	7.8 pCi/L	2.0× over
67	Honey Brook	7.8 pCi/L	2.0× over
68	Lawnton	7.8 pCi/L	1.9× over
69	Mount Holly Springs	7.8 pCi/L	1.9× over
70	Lake Wynonah	7.7 pCi/L	1.9× over
71	Light Street	7.6 pCi/L	1.9× over
72	Mount Joy	7.6 pCi/L	1.9× over
73	Carnegie	7.6 pCi/L	1.9× over
74	Elysburg	7.5 pCi/L	1.9× over
75	Jefferson Hills	7.5 pCi/L	1.9× over
76	Nazareth	7.3 pCi/L	1.8× over
77	Paoli	7.3 pCi/L	1.8× over
78	Skyline View	7.3 pCi/L	1.8× over
79	Calumet	7.2 pCi/L	1.8× over
80	Somerset	7.2 pCi/L	1.8× over
81	Lakemont	7.1 pCi/L	1.8× over
82	Hummelstown	7.0 pCi/L	1.8× over
83	Allentown	7.0 pCi/L	1.7× over
84	Cleona	6.9 pCi/L	1.7× over
85	Myerstown	6.9 pCi/L	1.7× over
86	Northumberland	6.9 pCi/L	1.7× over
87	Houserville	6.9 pCi/L	1.7× over
88	Mifflintown	6.8 pCi/L	1.7× over
89	Breinigsville	6.8 pCi/L	1.7× over
90	Slatington	6.7 pCi/L	1.7× over
91	Stony Creek Mills	6.7 pCi/L	1.7× over
92	Brodheadsville	6.6 pCi/L	1.6× over
93	Clay	6.6 pCi/L	1.6× over
94	Mechanicsburg	6.5 pCi/L	1.6× over
95	Abbottstown	6.5 pCi/L	1.6× over
96	Fountain Hill	6.5 pCi/L	1.6× over
97	York	6.5 pCi/L	1.6× over
98	Wernersville	6.4 pCi/L	1.6× over
99	West Fairview	6.4 pCi/L	1.6× over
100	Murrysville	6.4 pCi/L	1.6× over
101	Zelienople	6.3 pCi/L	1.6× over
102	Ellport	6.3 pCi/L	1.6× over
103	Treasure Lake	6.3 pCi/L	1.6× over
104	Waynesboro	6.3 pCi/L	1.6× over
105	White Oak	6.3 pCi/L	1.6× over
106	Chambersburg	6.3 pCi/L	1.6× over
107	Dorneyville	6.3 pCi/L	1.6× over
108	Emmaus	6.3 pCi/L	1.6× over
109	Millvale	6.3 pCi/L	1.6× over
110	Bath	6.2 pCi/L	1.6× over
111	Colonial Park	6.2 pCi/L	1.6× over
112	Hasson Heights	6.1 pCi/L	1.5× over
113	Ben Avon	6.1 pCi/L	1.5× over
114	Saylorsburg	6.1 pCi/L	1.5× over
115	Tunkhannock	6.1 pCi/L	1.5× over
116	West View	6.1 pCi/L	1.5× over
117	Back Mountain	6.0 pCi/L	1.5× over
118	Mars	6.0 pCi/L	1.5× over
119	Mechanicsville	6.0 pCi/L	1.5× over
120	Clarion	6.0 pCi/L	1.5× over
121	Spring Grove	5.9 pCi/L	1.5× over
122	Saxonburg	5.9 pCi/L	1.5× over
123	Annville	5.9 pCi/L	1.5× over
124	Lebanon	5.9 pCi/L	1.5× over
125	Greensburg	5.8 pCi/L	1.5× over
126	Milton	5.8 pCi/L	1.5× over
127	Lawson Heights	5.8 pCi/L	1.4× over
128	Boalsburg	5.7 pCi/L	1.4× over
129	Old Orchard	5.7 pCi/L	1.4× over
130	Bradford Woods	5.7 pCi/L	1.4× over
131	Allison Park	5.7 pCi/L	1.4× over
132	Manchester	5.7 pCi/L	1.4× over
133	Landisville	5.7 pCi/L	1.4× over
134	New Berlinville	5.7 pCi/L	1.4× over
135	Columbia	5.7 pCi/L	1.4× over
136	Biglerville	5.6 pCi/L	1.4× over
137	Chicora	5.6 pCi/L	1.4× over
138	New Holland	5.6 pCi/L	1.4× over
139	Saint Marys	5.6 pCi/L	1.4× over
140	Horsham	5.5 pCi/L	1.4× over
141	Lower Allen	5.5 pCi/L	1.4× over
142	South Coatesville	5.5 pCi/L	1.4× over
143	Youngsville	5.5 pCi/L	1.4× over
144	Trexlertown	5.5 pCi/L	1.4× over
145	Guilford	5.5 pCi/L	1.4× over
146	Middletown	5.5 pCi/L	1.4× over
147	Oley	5.4 pCi/L	1.4× over
148	Evans City	5.4 pCi/L	1.3× over
149	Paxtonia	5.3 pCi/L	1.3× over
150	Loganville	5.3 pCi/L	1.3× over
151	Homeacre-Lyndora	5.3 pCi/L	1.3× over
152	Mercersburg	5.3 pCi/L	1.3× over
153	Spring City	5.3 pCi/L	1.3× over
154	Stormstown	5.3 pCi/L	1.3× over
155	Coatesville	5.2 pCi/L	1.3× over
156	Linntown	5.2 pCi/L	1.3× over
157	Bally	5.2 pCi/L	1.3× over
158	Schlusser	5.2 pCi/L	1.3× over
159	Millersville	5.2 pCi/L	1.3× over
160	Parkesburg	5.2 pCi/L	1.3× over
161	Clarks Summit	5.2 pCi/L	1.3× over
162	Ambridge	5.1 pCi/L	1.3× over
163	McMurray	5.1 pCi/L	1.3× over
164	Cecil-Bishop	5.1 pCi/L	1.3× over
165	Hershey	5.1 pCi/L	1.3× over
166	Progress	5.1 pCi/L	1.3× over
167	Monroeville	5.1 pCi/L	1.3× over
168	Boiling Springs	5.0 pCi/L	1.3× over
169	Easton	5.0 pCi/L	1.2× over
170	Franklin Park	4.9 pCi/L	1.2× over
171	Bellefonte	4.9 pCi/L	1.2× over
172	Butler	4.9 pCi/L	1.2× over
173	Willow Street	4.9 pCi/L	1.2× over
174	Lancaster	4.9 pCi/L	1.2× over
175	Monaca	4.8 pCi/L	1.2× over
176	Camp Hill	4.8 pCi/L	1.2× over
177	Elizabethtown	4.8 pCi/L	1.2× over
178	Spring Ridge	4.8 pCi/L	1.2× over
179	Enola	4.8 pCi/L	1.2× over
180	Emsworth	4.7 pCi/L	1.2× over
181	Hanover	4.7 pCi/L	1.2× over
182	Etna	4.7 pCi/L	1.2× over
183	Berwyn	4.6 pCi/L	1.2× over
184	Fleetwood	4.6 pCi/L	1.2× over
185	Selinsgrove	4.6 pCi/L	1.2× over
186	Stonybrook	4.6 pCi/L	1.2× over
187	Oreland	4.6 pCi/L	1.1× over
188	Cranberry Township	4.6 pCi/L	1.1× over
189	Wescosville	4.6 pCi/L	1.1× over
190	Arlington Heights	4.5 pCi/L	1.1× over
191	Radnor	4.5 pCi/L	1.1× over
192	Weigelstown	4.5 pCi/L	1.1× over
193	Swissvale	4.5 pCi/L	1.1× over
194	Stroudsburg	4.5 pCi/L	1.1× over
195	Mansfield	4.4 pCi/L	1.1× over
196	Churchville	4.4 pCi/L	1.1× over
197	Eastlawn Gardens	4.4 pCi/L	1.1× over
198	Littlestown	4.4 pCi/L	1.1× over
199	Matamoras	4.4 pCi/L	1.1× over
200	Gold Key Lake	4.4 pCi/L	1.1× over
201	Northampton	4.4 pCi/L	1.1× over
202	Ephrata	4.4 pCi/L	1.1× over
203	Hokendauqua	4.4 pCi/L	1.1× over
204	Schnecksville	4.4 pCi/L	1.1× over
205	Pleasant Hills	4.4 pCi/L	1.1× over
206	Carnot-Moon	4.3 pCi/L	1.1× over
207	Sewickley	4.3 pCi/L	1.1× over
208	Canonsburg	4.3 pCi/L	1.1× over
209	Dillsburg	4.3 pCi/L	1.1× over
210	Raubsville	4.3 pCi/L	1.1× over
211	Boyertown	4.3 pCi/L	1.1× over
212	Churchill	4.3 pCi/L	1.1× over
213	Nixon	4.3 pCi/L	1.1× over
214	Fernway	4.3 pCi/L	1.1× over
215	Fox Chapel	4.2 pCi/L	1.1× over
216	Greencastle	4.2 pCi/L	1.1× over
217	Huntingdon	4.2 pCi/L	1.1× over
218	Chevy Chase Heights	4.2 pCi/L	1.1× over
219	Duboistown	4.2 pCi/L	1.1× over
220	Rennerdale	4.2 pCi/L	1.1× over
221	New Castle Northwest	4.2 pCi/L	1.0× over
222	Latrobe	4.2 pCi/L	1.0× over
223	Ambler	4.2 pCi/L	1.0× over
224	Coraopolis	4.2 pCi/L	1.0× over
225	Plum	4.2 pCi/L	1.0× over
226	Dover	4.1 pCi/L	1.0× over
227	Burgettstown	4.1 pCi/L	1.0× over
228	Jersey Shore	4.1 pCi/L	1.0× over
229	Conyngham	4.1 pCi/L	1.0× over
230	Gastonville	4.1 pCi/L	1.0× over
231	Elverson	4.0 pCi/L	1.0× over
232	Glenside	4.0 pCi/L	1.0× over
233	Level Green	4.0 pCi/L	1.0× over
234	Crafton	4.0 pCi/L	1.0× over
235	Emigsville	4.0 pCi/L	1.0× over
✓ Below EPA action level (4 pCi/L)
236	Amity Gardens	4.0 pCi/L	1.0× under
237	Oakmont	4.0 pCi/L	1.0× under
238	Muse	4.0 pCi/L	1.0× under
239	Mountain Top	4.0 pCi/L	1.0× under
240	Harrisburg	3.9 pCi/L	1.0× under
241	Springdale	3.9 pCi/L	1.0× under
242	Seven Fields	3.8 pCi/L	1.0× under
243	New Cumberland	3.8 pCi/L	1.0× under
244	Spring House	3.8 pCi/L	1.0× under
245	State College	3.8 pCi/L	1.0× under
246	Yorklyn	3.8 pCi/L	0.9× under
247	Carlisle	3.8 pCi/L	0.9× under
248	Downingtown	3.8 pCi/L	0.9× under
249	Wyomissing Hills	3.8 pCi/L	0.9× under
250	Gibsonia	3.8 pCi/L	0.9× under
251	Eagleville	3.7 pCi/L	0.9× under
252	Jenkintown	3.7 pCi/L	0.9× under
253	New Freedom	3.7 pCi/L	0.9× under
254	Valley Green	3.7 pCi/L	0.9× under
255	North Wales	3.7 pCi/L	0.9× under
256	Edgewood	3.7 pCi/L	0.9× under
257	Beaver	3.6 pCi/L	0.9× under
258	Towamensing Trails	3.6 pCi/L	0.9× under
259	Milford	3.6 pCi/L	0.9× under
260	East Stroudsburg	3.6 pCi/L	0.9× under
261	South Uniontown	3.6 pCi/L	0.9× under
262	Edgeworth	3.6 pCi/L	0.9× under
263	Ingram	3.6 pCi/L	0.9× under
264	Roaring Spring	3.6 pCi/L	0.9× under
265	Wayne	3.6 pCi/L	0.9× under
266	Fox Run	3.5 pCi/L	0.9× under
267	Sanatoga	3.5 pCi/L	0.9× under
268	Fairview	3.5 pCi/L	0.9× under
269	Thorndale	3.5 pCi/L	0.9× under
270	East Berlin	3.5 pCi/L	0.9× under
271	Lemont	3.5 pCi/L	0.9× under
272	Jim Thorpe	3.5 pCi/L	0.9× under
273	McDonald	3.5 pCi/L	0.9× under
274	Enlow	3.5 pCi/L	0.9× under
275	Lawrence Park	3.5 pCi/L	0.9× under
276	Hemlock Farms	3.5 pCi/L	0.9× under
277	Media	3.5 pCi/L	0.9× under
278	Tatamy	3.5 pCi/L	0.9× under
279	Meridian	3.5 pCi/L	0.9× under
280	Pottsville	3.4 pCi/L	0.9× under
281	Palmer Heights	3.4 pCi/L	0.9× under
282	Bryn Mawr	3.4 pCi/L	0.9× under
283	Bethlehem	3.4 pCi/L	0.8× under
284	Pennsburg	3.4 pCi/L	0.8× under
285	Washington	3.4 pCi/L	0.8× under
286	Throop	3.4 pCi/L	0.8× under
287	Baden	3.4 pCi/L	0.8× under
288	Bridgeville	3.4 pCi/L	0.8× under
289	Richboro	3.4 pCi/L	0.8× under
290	Gettysburg	3.3 pCi/L	0.8× under
291	Campbelltown	3.3 pCi/L	0.8× under
292	Langhorne	3.3 pCi/L	0.8× under
293	South Park Township	3.3 pCi/L	0.8× under
294	Pocono Ranch Lands	3.3 pCi/L	0.8× under
295	Hollidaysburg	3.3 pCi/L	0.8× under
296	McSherrystown	3.3 pCi/L	0.8× under
297	Oakdale	3.3 pCi/L	0.8× under
298	Brittany Farms-Highlands	3.2 pCi/L	0.8× under
299	Tinicum	3.2 pCi/L	0.8× under
300	Conshohocken	3.2 pCi/L	0.8× under
301	Lake Meade	3.2 pCi/L	0.8× under
302	Chalfont	3.2 pCi/L	0.8× under
303	Sturgeon	3.2 pCi/L	0.8× under
304	Bakerstown	3.2 pCi/L	0.8× under
305	New Hope	3.2 pCi/L	0.8× under
306	Shiloh	3.2 pCi/L	0.8× under
307	Wyomissing	3.1 pCi/L	0.8× under
308	Glenshaw	3.1 pCi/L	0.8× under
309	Morrisville	3.1 pCi/L	0.8× under
310	Grove City	3.1 pCi/L	0.8× under
311	Newtown Grant	3.1 pCi/L	0.8× under
312	Tannersville	3.1 pCi/L	0.8× under
313	Williamsport	3.1 pCi/L	0.8× under
314	Macungie	3.1 pCi/L	0.8× under
315	Trooper	3.1 pCi/L	0.8× under
316	Skippack	3.1 pCi/L	0.8× under
317	Village Shires	3.1 pCi/L	0.8× under
318	Manor	3.1 pCi/L	0.8× under
319	Brownstown	3.0 pCi/L	0.8× under
320	Caln	3.0 pCi/L	0.8× under
321	South Waverly	3.0 pCi/L	0.7× under
322	Braddock Hills	3.0 pCi/L	0.7× under
323	Scotland	3.0 pCi/L	0.7× under
324	Tyrone	3.0 pCi/L	0.7× under
325	Pottsgrove	3.0 pCi/L	0.7× under
326	North Catasauqua	3.0 pCi/L	0.7× under
327	Scranton	3.0 pCi/L	0.7× under
328	Spinnerstown	2.9 pCi/L	0.7× under
329	Forest Hills	2.9 pCi/L	0.7× under
330	Coopersburg	2.9 pCi/L	0.7× under
331	Springfield	2.9 pCi/L	0.7× under
332	Wilkinsburg	2.9 pCi/L	0.7× under
333	Imperial	2.9 pCi/L	0.7× under
334	New Oxford	2.9 pCi/L	0.7× under
335	Devon	2.9 pCi/L	0.7× under
336	Delmont	2.9 pCi/L	0.7× under
337	Moscow	2.9 pCi/L	0.7× under
338	Upper Saint Clair	2.9 pCi/L	0.7× under
339	Mifflinburg	2.8 pCi/L	0.7× under
340	Plumsteadville	2.8 pCi/L	0.7× under
341	Trappe	2.8 pCi/L	0.7× under
342	Chester Springs	2.8 pCi/L	0.7× under
343	Shavertown	2.8 pCi/L	0.7× under
344	Cheswick	2.8 pCi/L	0.7× under
345	Indiana	2.8 pCi/L	0.7× under
346	Bellevue	2.8 pCi/L	0.7× under
347	Altoona	2.8 pCi/L	0.7× under
348	Harleysville	2.8 pCi/L	0.7× under
349	Woxall	2.8 pCi/L	0.7× under
350	Thompsonville	2.8 pCi/L	0.7× under
351	Aliquippa	2.8 pCi/L	0.7× under
352	Richlandtown	2.8 pCi/L	0.7× under
353	Saw Creek	2.8 pCi/L	0.7× under
354	Penndel	2.7 pCi/L	0.7× under
355	Sharpsburg	2.7 pCi/L	0.7× under
356	Wolfdale	2.7 pCi/L	0.7× under
357	Pocono Pines	2.7 pCi/L	0.7× under
358	Harleigh	2.7 pCi/L	0.7× under
359	Hatfield	2.7 pCi/L	0.7× under
360	Kulpsville	2.7 pCi/L	0.7× under
361	Laporte	2.7 pCi/L	0.7× under
362	Paxtang	2.7 pCi/L	0.7× under
363	Brentwood	2.7 pCi/L	0.7× under
364	Halfway House	2.7 pCi/L	0.7× under
365	Pittsburgh	2.7 pCi/L	0.7× under
366	Schwenksville	2.7 pCi/L	0.7× under
367	Gilbertsville	2.6 pCi/L	0.7× under
368	West Chester	2.6 pCi/L	0.7× under
369	Honesdale	2.6 pCi/L	0.7× under
370	Wellsboro	2.6 pCi/L	0.7× under
371	Jeannette	2.6 pCi/L	0.7× under
372	Mountainhome	2.6 pCi/L	0.7× under
373	Parkside	2.6 pCi/L	0.7× under
374	Hellertown	2.6 pCi/L	0.6× under
375	Doylestown	2.6 pCi/L	0.6× under
376	West Conshohocken	2.6 pCi/L	0.6× under
377	New Britain	2.6 pCi/L	0.6× under
378	Morton	2.5 pCi/L	0.6× under
379	Brackenridge	2.5 pCi/L	0.6× under
380	Exton	2.5 pCi/L	0.6× under
381	Woodbourne	2.5 pCi/L	0.6× under
382	Plymouth Meeting	2.5 pCi/L	0.6× under
383	Hatboro	2.5 pCi/L	0.6× under
384	Trevose	2.5 pCi/L	0.6× under
385	South Greensburg	2.5 pCi/L	0.6× under
386	Dormont	2.5 pCi/L	0.6× under
387	Avonmore	2.5 pCi/L	0.6× under
388	East Bangor	2.5 pCi/L	0.6× under
389	Fairless Hills	2.5 pCi/L	0.6× under
390	Old Forge	2.5 pCi/L	0.6× under
391	McGovern	2.5 pCi/L	0.6× under
392	Wyncote	2.5 pCi/L	0.6× under
393	Homestead	2.5 pCi/L	0.6× under
394	Dresher	2.4 pCi/L	0.6× under
395	Verona	2.4 pCi/L	0.6× under
396	Audubon	2.4 pCi/L	0.6× under
397	Ebensburg	2.4 pCi/L	0.6× under
398	Fort Washington	2.4 pCi/L	0.6× under
399	Freemansburg	2.4 pCi/L	0.6× under
400	Green Tree	2.4 pCi/L	0.6× under
401	King of Prussia	2.4 pCi/L	0.6× under
402	Slippery Rock	2.4 pCi/L	0.6× under
403	Wyndmoor	2.4 pCi/L	0.6× under
404	Lima	2.4 pCi/L	0.6× under
405	Waymart	2.4 pCi/L	0.6× under
406	East Washington	2.4 pCi/L	0.6× under
407	Park Forest Village	2.4 pCi/L	0.6× under
408	Bristol	2.4 pCi/L	0.6× under
409	Broomall	2.4 pCi/L	0.6× under
410	Telford	2.4 pCi/L	0.6× under
411	Kenilworth	2.3 pCi/L	0.6× under
412	Quakertown	2.3 pCi/L	0.6× under
413	Chesterbrook	2.3 pCi/L	0.6× under
414	Evansburg	2.3 pCi/L	0.6× under
415	West Norriton	2.3 pCi/L	0.6× under
416	Oxford	2.3 pCi/L	0.6× under
417	Warminster Heights	2.3 pCi/L	0.6× under
418	Bloomfield	2.3 pCi/L	0.6× under
419	Trafford	2.3 pCi/L	0.6× under
420	Hulmeville	2.3 pCi/L	0.6× under
421	Pottstown	2.3 pCi/L	0.6× under
422	Indian Mountain Lake	2.3 pCi/L	0.6× under
423	Irwin	2.2 pCi/L	0.6× under
424	Dalton	2.2 pCi/L	0.6× under
425	Malvern	2.2 pCi/L	0.6× under
426	Maple Glen	2.2 pCi/L	0.6× under
427	Fellsburg	2.2 pCi/L	0.6× under
428	Limerick	2.2 pCi/L	0.5× under
429	Orwigsburg	2.2 pCi/L	0.5× under
430	Souderton	2.2 pCi/L	0.5× under
431	Woodside	2.2 pCi/L	0.5× under
432	Yardley	2.2 pCi/L	0.5× under
433	Emerald Lakes	2.2 pCi/L	0.5× under
434	Ivyland	2.2 pCi/L	0.5× under
435	Erie	2.2 pCi/L	0.5× under
436	Dupont	2.1 pCi/L	0.5× under
437	Hawley	2.1 pCi/L	0.5× under
438	Jonestown	2.1 pCi/L	0.5× under
439	New Castle	2.1 pCi/L	0.5× under
440	Dublin	2.1 pCi/L	0.5× under
441	East York	2.1 pCi/L	0.5× under
442	Swarthmore	2.1 pCi/L	0.5× under
443	Stowe	2.1 pCi/L	0.5× under
444	Sunrise Lake	2.1 pCi/L	0.5× under
445	Bryn Athyn	2.1 pCi/L	0.5× under
446	Montgomeryville	2.0 pCi/L	0.5× under
447	Penn Wynne	2.0 pCi/L	0.5× under
448	Mount Oliver	2.0 pCi/L	0.5× under
449	Lampeter	2.0 pCi/L	0.5× under
450	Whitehall	2.0 pCi/L	0.5× under
451	Blue Bell	2.0 pCi/L	0.5× under
452	Chester Heights	2.0 pCi/L	0.5× under
453	Mount Lebanon	2.0 pCi/L	0.5× under
454	Meadowood	2.0 pCi/L	0.5× under
455	Bedminster	1.9 pCi/L	0.5× under
456	Bethel Park	1.9 pCi/L	0.5× under
457	Rockledge	1.9 pCi/L	0.5× under
458	Flourtown	1.9 pCi/L	0.5× under
459	Jacksonwald	1.9 pCi/L	0.5× under
460	Collegeville	1.9 pCi/L	0.5× under
461	Harveys Lake	1.9 pCi/L	0.5× under
462	Blandon	1.8 pCi/L	0.5× under
463	Lansdale	1.8 pCi/L	0.5× under
464	Lewisburg	1.8 pCi/L	0.5× under
465	Sellersville	1.8 pCi/L	0.5× under
466	West Newton	1.8 pCi/L	0.5× under
467	Mount Cobb	1.8 pCi/L	0.4× under
468	Village Green-Green Ridge	1.8 pCi/L	0.4× under
469	Forest City	1.8 pCi/L	0.4× under
470	Perkasie	1.8 pCi/L	0.4× under
471	Levittown	1.8 pCi/L	0.4× under
472	Narberth	1.8 pCi/L	0.4× under
473	Heidelberg	1.8 pCi/L	0.4× under
474	Ligonier	1.8 pCi/L	0.4× under
475	Ardmore	1.7 pCi/L	0.4× under
476	Phoenixville	1.7 pCi/L	0.4× under
477	Drexel Hill	1.7 pCi/L	0.4× under
478	Feasterville	1.7 pCi/L	0.4× under
479	Royersford	1.7 pCi/L	0.4× under
480	Castle Shannon	1.7 pCi/L	0.4× under
481	Fairchance	1.7 pCi/L	0.4× under
482	Boothwyn	1.6 pCi/L	0.4× under
483	Eddington	1.6 pCi/L	0.4× under
484	West Grove	1.6 pCi/L	0.4× under
485	Newtown	1.6 pCi/L	0.4× under
486	Aspinwall	1.6 pCi/L	0.4× under
487	Willow Grove	1.5 pCi/L	0.4× under
488	McKees Rocks	1.5 pCi/L	0.4× under
489	Hermitage	1.5 pCi/L	0.4× under
490	Bala-Cynwyd	1.5 pCi/L	0.4× under
491	Avondale	1.4 pCi/L	0.4× under
492	Northwest Harborcreek	1.4 pCi/L	0.4× under
493	Kennett Square	1.4 pCi/L	0.3× under
494	Norristown	1.3 pCi/L	0.3× under
495	Glenolden	1.3 pCi/L	0.3× under
496	Brookhaven	1.3 pCi/L	0.3× under
497	Topton	1.3 pCi/L	0.3× under
498	Hughestown	1.3 pCi/L	0.3× under
499	Millbourne	1.3 pCi/L	0.3× under
500	Mount Pleasant	1.3 pCi/L	0.3× under
501	Bridgeport	1.2 pCi/L	0.3× under
502	Ancient Oaks	1.2 pCi/L	0.3× under
503	Newport	1.2 pCi/L	0.3× under
504	Philadelphia	1.2 pCi/L	0.3× under
505	Meadville	1.1 pCi/L	0.3× under
506	Mount Pocono	1.1 pCi/L	0.3× under
507	East Greenville	1.1 pCi/L	0.3× under
508	Birchwood Lakes	1.0 pCi/L	0.2× under
509	Cornwells Heights	1.0 pCi/L	0.2× under
510	Croydon	0.9 pCi/L	0.2× under
511	Bradford	0.9 pCi/L	0.2× under
512	Dunmore	0.8 pCi/L	0.2× under

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