Highest indoor radon communities (2025, survey vintage carried)

OpenStats

Highest indoor radon communities (2025, survey vintage carried)

Carried from Health Canada 2012–2013 CMA radon-thoron survey means (not an annual retest).

Rank	Place	Province	Score
1	Burnaby	British Columbia	279
2	Dauphin	Manitoba	279
3	Belleville - Quinte West	Ontario	279
4	Centre Wellington	Ontario	279
5	Pelham	Ontario	279
6	Dolbeau-Mistassini	Quebec	278
7	Morden	Manitoba	277
8	Kitchener	Ontario	277
9	Cold Lake	Alberta	276
10	Winkler	Manitoba	276
11	Kentville	Nova Scotia	276
12	Mississauga	Ontario	275
13	Spruce Grove	Alberta	274
14	Drummondville	Quebec	273
15	North Vancouver	British Columbia	271
16	Steinbach	Manitoba	271
17	Levis	Quebec	270
18	Beaumont	Alberta	269
19	Canmore	Alberta	269
20	Espanola	Ontario	269
21	Sudbury	Ontario	268
22	Alma	Quebec	268
23	Brantford	Ontario	266
24	Niagara Falls	Ontario	266
25	Orangeville	Ontario	266
26	Lacombe	Alberta	265
27	Dawson Creek	British Columbia	265
28	Kingston	Ontario	265
29	Woodstock	New Brunswick	262
30	Ottawa	Ontario	262
31	Smithers	British Columbia	261
32	Mount Pearl	Newfoundland and Labrador	261
33	Burlington	Ontario	260
34	Marystown	Newfoundland and Labrador	259
35	Gravenhurst	Ontario	259
36	New Tecumseth	Ontario	259
37	Bonnyville	Alberta	258
38	Bathurst	New Brunswick	258
39	Airdrie	Alberta	256
40	Cambridge	Ontario	256
41	Petrolia	Ontario	254
42	Salmon Arm	British Columbia	253
43	Lloydminster	Saskatchewan	253
44	Grande Prairie	Alberta	252
45	Port Hope	Ontario	252
46	View Royal	British Columbia	251
47	Winnipeg	Manitoba	251
48	Brant	Ontario	251
49	Bracebridge	Ontario	250
50	Quebec City	Quebec	250
51	Pitt Meadows	British Columbia	248
52	Quispamsis	New Brunswick	246
53	Stettler	Alberta	245
54	Sainte-Agathe-des-Monts	Quebec	245
55	Saguenay	Quebec	244
56	Saint-Hyacinthe	Quebec	244
57	Williams Lake	British Columbia	240
58	Clarenville	Newfoundland and Labrador	240
59	Humboldt	Saskatchewan	240
60	Squamish	British Columbia	239
61	Joliette	Quebec	239
62	The Pas	Manitoba	238
63	Lakeshore	Ontario	238
64	Fort Erie	Ontario	235
65	Surrey	British Columbia	234
66	East Gwillimbury	Ontario	233
67	Quesnel	British Columbia	229
68	Yorkton	Saskatchewan	229
69	Thetford Mines	Quebec	228
70	Cochrane	Ontario	227
71	Thunder Bay	Ontario	227
72	North Battleford	Saskatchewan	224
73	Osoyoos	British Columbia	223
74	Kelowna	British Columbia	221
75	Armstrong	British Columbia	219
76	Grimsby	Ontario	219
77	Guelph	Ontario	219
78	Warman	Saskatchewan	219
79	Devon	Alberta	218
80	Petawawa	Ontario	218
81	Leduc	Alberta	217
82	New Westminster	British Columbia	216
83	Trois-Rivieres	Quebec	216
84	Saskatoon	Saskatchewan	216
85	High River	Alberta	215
86	Norfolk	Ontario	215
87	Lloydminster (Part)	Saskatchewan	215
88	Essex	Ontario	214
89	Sackville	New Brunswick	213
90	Wetaskiwin	Alberta	212
91	Sainte-Marie	Quebec	212
92	Charlottetown	Prince Edward Island	210
93	Perth	Ontario	209
94	Penticton	British Columbia	208
95	Carleton Place	Ontario	208
96	Essa	Ontario	208
97	Norfolk County	Ontario	208
98	Mississippi Mills	Ontario	207
99	Saint-Georges	Quebec	207
100	Orillia	Ontario	206
101	Miramichi	New Brunswick	204
102	Colwood	British Columbia	203
103	Port Alberni	British Columbia	203
104	South Bruce Peninsula	Ontario	203
105	Fort Frances	Ontario	202
106	Maple Ridge	British Columbia	201
107	Haldimand County	Ontario	201
108	Labrador City	Newfoundland and Labrador	200
109	Windsor	Ontario	200
110	Minto	Ontario	199
111	Richmond	British Columbia	198
112	Halton Hills	Ontario	197
113	Temiskaming Shores	Ontario	196
114	Martensville	Saskatchewan	195
115	Tecumseh	Ontario	192
116	Cranbrook	British Columbia	189
117	Oromocto	New Brunswick	189
118	Abbotsford	British Columbia	188
119	Georgina	Ontario	188
120	Rocky Mountain House	Alberta	187
121	Moose Jaw	Saskatchewan	187
122	Three Rivers	Prince Edward Island	186
123	Kamloops	British Columbia	184
124	Powell River	British Columbia	184
125	Lachute	Quebec	183
126	Langley	British Columbia	182
127	St. Catharines	Ontario	182
128	Duncan	British Columbia	181
129	Brampton	Ontario	181
130	Tillsonburg	Ontario	181
131	Welland	Ontario	181
132	Ajax	Ontario	180
133	Port Coquitlam	British Columbia	179
134	Chatham-Kent	Ontario	179
135	Nanaimo	British Columbia	177
136	Sherbrooke	Quebec	177
137	Drumheller	Alberta	176
138	Stephenville	Newfoundland and Labrador	176
139	Huntsville	Ontario	176
140	Campbell River	British Columbia	175
141	Riverview	New Brunswick	174
142	Whitehorse	Yukon	174
143	Hawkesbury	Ontario	171
144	Ingersoll	Ontario	171
145	Matane	Quebec	171
146	Weyburn	Saskatchewan	171
147	Trail	British Columbia	170
148	Corner Brook	Newfoundland and Labrador	170
149	Edson	Alberta	169
150	Coquitlam	British Columbia	169
151	Iqaluit	Nunavut	169
152	Hanover	Ontario	169
153	Port Moody	British Columbia	168
154	Merritt	British Columbia	167
155	Montreal	Quebec	167
156	Banff	Alberta	165
157	Renfrew	Ontario	165
158	Oliver	British Columbia	163
159	Vancouver	British Columbia	163
160	Fort McMurray	Alberta	162
161	Sidney	British Columbia	162
162	Thompson	Manitoba	160
163	Grand Falls	New Brunswick	160
164	Greater Sudbury	Ontario	159
165	Owen Sound	Ontario	159
166	Sept-Îles	Quebec	159
167	Hinton	Alberta	158
168	Sault Ste. Marie	Ontario	157
169	Toronto	Ontario	157
170	Campbellton	New Brunswick	156
171	Chestermere	Alberta	155
172	Stonewall	Manitoba	155
173	Collingwood	Ontario	155
174	Elliot Lake	Ontario	155
175	Didsbury	Alberta	154
176	Hamilton	Ontario	154
177	Salaberry-de-Valleyfield	Quebec	154
178	Laval	Quebec	153
179	Castlegar	British Columbia	152
180	Edmundston	New Brunswick	152
181	Caledon	Ontario	152
182	Red Deer	Alberta	150
183	Portugal Cove-St. Philip's	Newfoundland and Labrador	150
184	Oakville	Ontario	149
185	Saugeen Shores	Ontario	149
186	St. Albert	Alberta	148
187	LaSalle	Ontario	148
188	Courtenay	British Columbia	146
189	St. John's	Newfoundland and Labrador	146
190	Oshawa	Ontario	143
191	Wolfville	Nova Scotia	142
192	Langford	British Columbia	141
193	Gananoque	Ontario	141
194	Whitby	Ontario	141
195	Truro	Nova Scotia	140
196	North Bay	Ontario	140
197	Baie-Comeau	Quebec	139
198	Ponoka	Alberta	138
199	Stony Plain	Alberta	138
200	Port Colborne	Ontario	138
201	Drayton Valley	Alberta	137
202	Neepawa	Manitoba	137
203	Brooks	Alberta	134
204	Bradford West Gwillimbury	Ontario	134
205	Yarmouth	Nova Scotia	133
206	Timmins	Ontario	133
207	Camrose	Alberta	132
208	Belleville	Ontario	132
209	Pickering	Ontario	130
210	Calgary	Alberta	129
211	Barrie	Ontario	129
212	Prince Edward County	Ontario	128
213	Richmond Hill	Ontario	128
214	Midland	Ontario	127
215	Lethbridge	Alberta	126
216	Whitecourt	Alberta	126
217	Comox	British Columbia	126
218	Happy Valley-Goose Bay	Newfoundland and Labrador	126
219	Victoriaville	Quebec	126
220	Victoria	British Columbia	125
221	Niagara-on-the-Lake	Ontario	125
222	Yellowknife	Northwest Territories	124
223	Clarence-Rockland	Ontario	124
224	Thorold	Ontario	122
225	Sydney	Nova Scotia	120
226	Peace River	Alberta	119
227	Mono	Ontario	119
228	Paradise	Newfoundland and Labrador	118
229	Brandon	Manitoba	116
230	Kawartha Lakes	Ontario	114
231	Melfort	Saskatchewan	114
232	Halifax	Nova Scotia	113
233	Lincoln	Ontario	113
234	Aurora	Ontario	110
235	Qualicum Beach	British Columbia	109
236	Terrebonne	Quebec	109
237	Terrace	British Columbia	108
238	Vaughan	Ontario	106
239	St. Thomas	Ontario	104
240	Kimberley	British Columbia	102
241	Prince Rupert	British Columbia	102
242	Bridgewater	Nova Scotia	102
243	Peterborough	Ontario	102
244	Quinte West	Ontario	102
245	Cornwall	Prince Edward Island	102
246	Slave Lake	Alberta	101
247	Whitchurch-Stouffville	Ontario	101
248	Edmonton	Alberta	100
249	Amherst	Nova Scotia	100
250	Granby	Quebec	100
251	Fernie	British Columbia	99
252	Smiths Falls	Ontario	99
253	Vernon	British Columbia	98
254	Chilliwack	British Columbia	97
255	Innisfil	Ontario	96
256	Cowansville	Quebec	96
257	Regina	Saskatchewan	95
258	Shediac	New Brunswick	94
259	Plympton-Wyoming	Ontario	94
260	Redcliff	Alberta	93
261	The Blue Mountains	Ontario	93
262	Estevan	Saskatchewan	93
263	Dryden	Ontario	92
264	Kingsville	Ontario	92
265	Innisfail	Alberta	91
266	Prince George	British Columbia	91
267	Cobourg	Ontario	91
268	Coaldale	Alberta	89
269	Portage la Prairie	Manitoba	87
270	Selkirk	Manitoba	87
271	Amos	Quebec	87
272	Medicine Hat	Alberta	86
273	Saint John	New Brunswick	86
274	Sorel-Tracy	Quebec	86
275	Ladysmith	British Columbia	85
276	Kapuskasing	Ontario	85
277	Stratford	Ontario	85
278	Fort St. John	British Columbia	83
279	Dieppe	New Brunswick	82
280	Longueuil	Quebec	81
281	Cornwall	Ontario	80
282	Markham	Ontario	79
283	Sylvan Lake	Alberta	77
284	Moncton	New Brunswick	77
285	Rothesay	New Brunswick	76
286	Aylmer	Ontario	76
287	Bay Roberts	Newfoundland and Labrador	75
288	Niverville	Manitoba	74
289	White Rock	British Columbia	73
290	Shelburne	Ontario	72
291	Meadow Lake	Saskatchewan	72
292	West Kelowna	British Columbia	71
293	Olds	Alberta	70
294	St. Marys	Ontario	70
295	Summerside	Prince Edward Island	70
296	Waterloo	Ontario	69
297	Nelson	British Columbia	67
298	Morinville	Alberta	65
299	Strathmore	Alberta	65
300	Prince Albert	Saskatchewan	65
301	Rouyn-Noranda	Quebec	64
302	Stratford	Prince Edward Island	63
303	Delta	British Columbia	62
304	Sarnia	Ontario	62
305	Vegreville	Alberta	61
306	Goderich	Ontario	61
307	Amherstburg	Ontario	60
308	Kirkland Lake	Ontario	60
309	Penetanguishene	Ontario	59
310	Shawinigan	Quebec	58
311	Brockville	Ontario	57
312	Woodstock	Ontario	55
313	Gatineau	Quebec	53
314	Revelstoke	British Columbia	50
315	London	Ontario	50
316	Rivière-du-Loup	Quebec	50
317	Val-d'Or	Quebec	49
318	Taber	Alberta	48
319	Blackfalds	Alberta	47
320	Creston	British Columbia	44
321	Wasaga Beach	Ontario	44
322	Okotoks	Alberta	42
323	Wainwright	Alberta	42
324	Parry Sound	Ontario	42
325	New Glasgow	Nova Scotia	41
326	Milton	Ontario	41
327	Grand Falls-Windsor	Newfoundland and Labrador	39
328	Conception Bay South	Newfoundland and Labrador	38
329	Kenora	Ontario	38
330	Swift Current	Saskatchewan	38
331	Erin	Ontario	36
332	Fort Saskatchewan	Alberta	35
333	Greater Napanee	Ontario	35
334	Rimouski	Quebec	34
335	Parksville	British Columbia	33
336	Pembroke	Ontario	33
337	Lloydminster (Part)	Alberta	32
338	St. Paul	Alberta	32
339	Cochrane	Alberta	31
340	Arnprior	Ontario	31
341	Fredericton	New Brunswick	30
342	Gander	Newfoundland and Labrador	30
343	Torbay	Newfoundland and Labrador	30

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