| Radon Levels by Zip Code |
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This data is for informational purposes only. It is compiled by the Oregon Health Division from long-term tests (more than 90 days), conducted primarily by homeowners in living areas of residences.
Indoor radon concentrations are influenced by weather, season, geology, type of construction and heating, ventilation and air conditioning systems. Therefore, this data should not be used, in general, to substitute for radon tests in homes.
The Health Division recommends testing all residences, specifically the living areas, on a long-term basis, to evaluate the annual average concentration. When the annual average concentration in a living area of a home exceeds 4 pCi/liter, it is recommended that measures be taken to lower the concentration to below the 4 pCi/liter level.
Additional information can be obtained from the Oregon Health Division, Radon Information Line (971) 673-0490.
Download the pdf Radon Concentrations by Zip Code
Radon Concentrations by Zip Code
in pCi/liter
| Zip |
Total Records |
Max |
Min |
Avg |
> 4 pCi/l |
| 97002 |
2 |
1.7 |
1.0 |
1.4 |
0 |
| 97004 |
5 |
2.7 |
0.6 |
1.7 |
0 |
| 97005 |
37 |
3.7 |
0.2 |
1.4 |
0 |
| 97006 |
27 |
6.6 |
0.1 |
1.6 |
2 |
| 97007 |
29 |
15.4 |
0.2 |
2.6 |
4 |
| 97009 |
12 |
4.2 |
1.0 |
2.5 |
1 |
| 97011 |
1 |
2.7 |
2.7 |
2.7 |
0 |
| 97013 |
5 |
1.7 |
0.4 |
1.0 |
0 |
| 97015 |
7 |
4.3 |
0.4 |
2.8 |
2 |
| 97018 |
1 |
3.0 |
3.0 |
3.0 |
0 |
| 97019 |
5 |
2.2 |
0.6 |
1.7 |
0 |
| 97020 |
2 |
2.2 |
2.2 |
2.2 |
0 |
| 97021 |
10 |
3.2 |
0.3 |
1.2 |
0 |
| 97022 |
2 |
0.8 |
0.8 |
0.8 |
0 |
| 97023 |
40 |
6.3 |
0.4 |
2.3 |
5 |
| 97027 |
3 |
2.0 |
1.7 |
1.8 |
0 |
| 97030 |
63 |
10.1 |
0.1 |
2.4 |
7 |
| 97031 |
27 |
5.9 |
0.2 |
1.8 |
2 |
| 97032 |
2 |
2.0 |
1.5 |
1.8 |
0 |
| 97034 |
53 |
13.3 |
0.1 |
2.3 |
9 |
| 97035 |
35 |
10.3 |
0.1 |
1.7 |
2 |
| 97037 |
26 |
7.4 |
0.2 |
2.0 |
2 |
| 97038 |
3 |
1.0 |
0.7 |
0.8 |
0 |
| 97041 |
18 |
3.3 |
0.2 |
1.2 |
0 |
| 97042 |
2 |
3.8 |
0.8 |
2.3 |
0 |
| 97045 |
26 |
6.4 |
0.5 |
2.2 |
2 |
| 97048 |
1 |
1.6 |
1.6 |
1.6 |
0 |
| 97049 |
26 |
1.4 |
0.2 |
0.6 |
0 |
| 97051 |
3 |
6.0 |
1.6 |
3.4 |
1 |
| 97054 |
1 |
0.6 |
0.6 |
0.6 |
0 |
| 97055 |
5 |
7.8 |
0.2 |
2.9 |
1 |
| 97056 |
2 |
3.9 |
1.1 |
2.5 |
0 |
| 97058 |
9 |
3.4 |
0.2 |
0.9 |
0 |
| 97060 |
14 |
3.4 |
0.1 |
1.6 |
0 |
| 97062 |
18 |
11.7 |
0.2 |
2.2 |
3 |
| 97063 |
1 |
1.0 |
1.0 |
1.0 |
0 |
| 97064 |
1 |
1.4 |
1.4 |
1.4 |
0 |
| 97067 |
1 |
1.9 |
1.9 |
1.9 |
0 |
| 97068 |
30 |
25.5 |
0.1 |
4.5 |
11 |
| 97070 |
9 |
5.2 |
0.3 |
2.7 |
3 |
| 97071 |
5 |
4.7 |
0.8 |
2.4 |
1 |
| 97075 |
3 |
0.5 |
0.1 |
0.3 |
0 |
| 97080 |
17 |
2.4 |
0.1 |
1.2 |
0 |
| 97101 |
1 |
2.4 |
2.4 |
2.4 |
0 |
| 97103 |
26 |
8.7 |
0.1 |
2.3 |
5 |
| 97106 |
5 |
133.6* |
1.2 |
29.5 |
2 |
| 97109 |
1 |
4.1 |
4.1 |
4.1 |
1 |
| 97110 |
1 |
0.1 |
0.1 |
0.1 |
0 |
| 97111 |
1 |
0.6 |
0.6 |
0.6 |
0 |
| 97112 |
1 |
1.0 |
1.0 |
1.0 |
0 |
| 97113 |
3 |
13.9 |
2.5 |
6.9 |
2 |
| 97114 |
1 |
1.3 |
1.3 |
1.3 |
0 |
| 97115 |
1 |
3.8 |
3.8 |
3.8 |
0 |
| 97116 |
10 |
8.2 |
0.5 |
2.5 |
1 |
| 97119 |
2 |
3.1 |
2.1 |
2.6 |
0 |
| 97121 |
1 |
0.3 |
0.3 |
0.3 |
0 |
| 97122 |
2 |
3.9 |
2.8 |
3.3 |
0 |
| 97123 |
18 |
20.9 |
0.6 |
4.6 |
7 |
| 97124 |
14 |
4.6 |
0.4 |
1.6 |
1 |
| 97128 |
12 |
5.6 |
0.3 |
1.3 |
1 |
| 97132 |
10 |
6.6 |
1.0 |
2.5 |
1 |
| 97134 |
1 |
2.2 |
2.2 |
2.2 |
0 |
| 97135 |
1 |
5.7 |
5.7 |
5.7 |
1 |
| 97138 |
5 |
0.8 |
0.1 |
0.5 |
0 |
| 97140 |
10 |
4.8 |
0.5 |
2.6 |
2 |
| 97141 |
7 |
6.8 |
0.3 |
3.3 |
2 |
| 97143 |
1 |
1.0 |
1.0 |
1.0 |
0 |
| 97146 |
5 |
1.0 |
0.1 |
0.4 |
0 |
| 97148 |
2 |
5.8 |
1.9 |
3.8 |
1 |
| 97201 |
56 |
5.6 |
0.1 |
1.4 |
3 |
| 97202 |
51 |
7.5 |
0.1 |
2.7 |
8 |
| 97203 |
55 |
9.6 |
0.1 |
2.5 |
11 |
| 97204 |
12 |
3.9 |
0.3 |
1.6 |
0 |
| 97206 |
21 |
15.2 |
0.9 |
4.6 |
7 |
| 97207 |
1 |
1.1 |
1.1 |
1.1 |
0 |
| 97208 |
7 |
3.0 |
0.1 |
1.4 |
0 |
| 97209 |
3 |
2.7 |
0.9 |
1.6 |
0 |
| 97210 |
121 |
19.9 |
0.1 |
1.3 |
8 |
| 97211 |
49 |
35.5 |
0.4 |
5.0 |
25 |
| 97212 |
132 |
25.5 |
0.1 |
4.5 |
48 |
| 97213 |
106 |
34.2 |
0.5 |
5.2 |
54 |
| 97214 |
29 |
6.5 |
0.2 |
2.2 |
5 |
| 97215 |
37 |
6.5 |
0.4 |
2.0 |
1 |
| 97216 |
12 |
14.2 |
0.9 |
3.2 |
2 |
| 97217 |
32 |
19.0 |
0.2 |
4.4 |
13 |
| 97218 |
27 |
14.3 |
0.2 |
4.3 |
11 |
| 97219 |
67 |
6.1 |
0.1 |
1.3 |
3 |
| 97220 |
39 |
33.9 |
0.3 |
6.2 |
16 |
| 97221 |
42 |
7.0 |
0.2 |
1.6 |
3 |
| 97222 |
19 |
7.2 |
0.2 |
2.1 |
4 |
| 97223 |
42 |
8.3 |
0.2 |
1.9 |
3 |
| 97224 |
26 |
3.8 |
0.1 |
1.4 |
0 |
| 97225 |
48 |
17.5 |
0.3 |
2.6 |
10 |
| 97227 |
3 |
1.0 |
0.2 |
0.5 |
0 |
| 97229 |
27 |
4.6 |
0.2 |
1.3 |
1 |
| 97230 |
33 |
27.4 |
0.5 |
3.6 |
7 |
| 97231 |
4 |
5.9 |
1.0 |
3.4 |
2 |
| 97232 |
25 |
20.8 |
0.6 |
3.5 |
6 |
| 97233 |
9 |
21.9 |
0.5 |
4.3 |
3 |
| 97236 |
19 |
13.7 |
0.3 |
3.6 |
5 |
| 97240 |
1 |
3.9 |
3.9 |
3.9 |
0 |
| 97266 |
11 |
12.0 |
0.5 |
3.3 |
2 |
| 97267 |
22 |
6.9 |
0.3 |
1.9 |
2 |
| 97268 |
1 |
5.2 |
5.2 |
5.2 |
1 |
| 97301 |
26 |
7.2 |
0.3 |
2.1 |
3 |
| 97302 |
53 |
12.5 |
0.2 |
2.7 |
10 |
| 97303 |
14 |
2.9 |
0.4 |
1.2 |
0 |
| 97304 |
35 |
48.8 |
0.3 |
8.2 |
17 |
| 97305 |
7 |
4.3 |
0.7 |
1.7 |
1 |
| 97306 |
20 |
25.2 |
0.2 |
3.5 |
3 |
| 97308 |
16 |
1.6 |
0.1 |
0.5 |
0 |
| 97309 |
1 |
0.5 |
0.5 |
0.5 |
0 |
| 97310 |
12 |
1.7 |
0.2 |
0.9 |
0 |
| 97321 |
38 |
4.3 |
0.1 |
1.2 |
1 |
| 97324 |
1 |
0.6 |
0.6 |
0.6 |
0 |
| 97325 |
6 |
9.0 |
0.2 |
3.6 |
2 |
| 97327 |
1 |
0.1 |
0.1 |
0.1 |
0 |
| 97329 |
1 |
2.7 |
2.7 |
2.7 |
0 |
| 97330 |
43 |
8.7 |
0.1 |
1.1 |
4 |
| 97333 |
24 |
5.5 |
0.1 |
1.3 |
2 |
| 97338 |
25 |
6.0 |
0.1 |
1.6 |
1 |
| 97339 |
2 |
0.6 |
0.4 |
0.5 |
0 |
| 97344 |
1 |
9.4 |
9.4 |
9.4 |
1 |
| 97351 |
4 |
2.4 |
0.9 |
1.7 |
0 |
| 97352 |
5 |
21.5 |
0.2 |
5.8 |
2 |
| 97355 |
12 |
3.8 |
0.3 |
1.6 |
0 |
| 97359 |
1 |
0.6 |
0.6 |
0.6 |
0 |
| 97361 |
3 |
1.5 |
0.3 |
1.0 |
0 |
| 97362 |
1 |
1.2 |
1.2 |
1.2 |
0 |
| 97364 |
1 |
2.0 |
2.0 |
2.0 |
0 |
| 97365 |
1 |
0.3 |
0.3 |
0.3 |
0 |
| 97367 |
1 |
0.5 |
0.5 |
0.5 |
0 |
| 97368 |
3 |
1.5 |
0.1 |
0.8 |
0 |
| 97370 |
9 |
2.9 |
0.2 |
1.1 |
0 |
| 97372 |
1 |
0.8 |
0.8 |
0.8 |
0 |
| 97374 |
4 |
1.7 |
1.2 |
1.4 |
0 |
| 97375 |
3 |
2.4 |
1.7 |
1.9 |
0 |
| 97377 |
2 |
1.0 |
0.5 |
0.8 |
0 |
| 97378 |
1 |
6.1 |
6.1 |
6.1 |
1 |
| 97381 |
6 |
7.5 |
0.4 |
4.2 |
3 |
| 97385 |
4 |
8.4 |
0.5 |
3.1 |
1 |
| 97386 |
7 |
3.3 |
0.3 |
1.2 |
0 |
| 97388 |
3 |
4.0 |
0.7 |
2.0 |
0 |
| 97389 |
2 |
0.9 |
0.3 |
0.6 |
0 |
| 97391 |
1 |
3.2 |
3.2 |
3.2 |
0 |
| 97392 |
2 |
0.8 |
0.7 |
0.8 |
0 |
| 97394 |
2 |
2.7 |
0.8 |
1.8 |
0 |
| 97401 |
26 |
6.6 |
0.2 |
1.3 |
1 |
| 97402 |
10 |
15.4 |
0.5 |
3.6 |
2 |
| 97403 |
18 |
4.1 |
0.3 |
1.6 |
2 |
| 97404 |
10 |
4.3 |
0.1 |
1.9 |
1 |
| 97405 |
31 |
6.4 |
0.1 |
1.6 |
2 |
| 97415 |
3 |
0.8 |
0.7 |
0.8 |
0 |
| 97417 |
1 |
0.7 |
0.7 |
0.7 |
0 |
| 97420 |
20 |
7.5 |
0.1 |
1.8 |
2 |
| 97423 |
6 |
6.8 |
1.1 |
2.5 |
1 |
| 97424 |
7 |
6.5 |
0.7 |
2.0 |
1 |
| 97426 |
3 |
1.9 |
0.3 |
0.9 |
0 |
| 97436 |
1 |
1.2 |
1.2 |
1.2 |
0 |
| 97439 |
1 |
1.7 |
1.7 |
1.7 |
0 |
| 97442 |
1 |
1.5 |
1.5 |
1.5 |
0 |
| 97443 |
1 |
0.6 |
0.6 |
0.6 |
0 |
| 97448 |
1 |
0.7 |
0.7 |
0.7 |
0 |
| 97449 |
1 |
0.9 |
0.9 |
0.9 |
0 |
| 97451 |
1 |
0.4 |
0.4 |
0.4 |
0 |
| 97455 |
1 |
1.3 |
1.3 |
1.3 |
0 |
| 97456 |
5 |
2.2 |
0.1 |
1.2 |
0 |
| 97457 |
2 |
7.0 |
0.4 |
3.7 |
1 |
| 97458 |
3 |
2.1 |
0.3 |
1.1 |
0 |
| 97459 |
11 |
15.6 |
0.1 |
2.1 |
1 |
| 97465 |
1 |
0.9 |
0.9 |
0.9 |
0 |
| 97469 |
1 |
0.1 |
0.1 |
0.1 |
0 |
| 97470 |
17 |
3.0 |
0.1 |
0.8 |
0 |
| 97477 |
3 |
2.3 |
0.5 |
1.1 |
0 |
| 97478 |
3 |
1.3 |
0.3 |
0.7 |
0 |
| 97479 |
1 |
6.2 |
6.2 |
6.2 |
1 |
| 97484 |
1 |
1.1 |
1.1 |
1.1 |
0 |
| 97489 |
1 |
0.9 |
0.9 |
0.9 |
0 |
| 97495 |
1 |
0.3 |
0.3 |
0.3 |
0 |
| 97496 |
2 |
3.4 |
1.8 |
2.6 |
0 |
| 97497 |
2 |
0.5 |
0.4 |
0.5 |
0 |
| 97499 |
1 |
2.2 |
2.2 |
2.2 |
0 |
| 97501 |
31 |
5.7 |
0.1 |
1.5 |
3 |
| 97502 |
7 |
0.7 |
0.4 |
0.6 |
0 |
| 97503 |
8 |
5.3 |
0.1 |
1.3 |
1 |
| 97504 |
60 |
6.0 |
0.2 |
1.3 |
3 |
| 97520 |
19 |
5.9 |
0.1 |
1.3 |
1 |
| 97523 |
1 |
1.2 |
1.2 |
1.2 |
0 |
| 97524 |
12 |
1.4 |
0.2 |
0.7 |
0 |
| 97525 |
4 |
2.1 |
0.1 |
0.7 |
0 |
| 97526 |
29 |
5.3 |
0.1 |
0.7 |
1 |
| 97527 |
21 |
3.2 |
0.1 |
0.7 |
0 |
| 97530 |
12 |
4.1 |
0.1 |
0.9 |
1 |
| 97532 |
4 |
2.0 |
0.5 |
1.2 |
0 |
| 97535 |
4 |
0.8 |
0.3 |
0.5 |
0 |
| 97537 |
11 |
1.2 |
0.1 |
0.5 |
0 |
| 97538 |
3 |
15.4 |
1.0 |
6.0 |
1 |
| 97539 |
3 |
0.7 |
0.2 |
0.4 |
0 |
| 97540 |
5 |
6.0 |
0.5 |
2.1 |
1 |
| 97541 |
1 |
0.2 |
0.2 |
0.2 |
0 |
| 97544 |
3 |
0.8 |
0.2 |
0.5 |
0 |
| 97601 |
27 |
5.7 |
0.1 |
0.8 |
1 |
| 97603 |
21 |
3.1 |
0.1 |
0.6 |
0 |
| 97622 |
3 |
4.0 |
3.3 |
3.8 |
0 |
| 97624 |
4 |
1.2 |
0.3 |
0.8 |
0 |
| 97627 |
1 |
0.2 |
0.2 |
0.2 |
0 |
| 97630 |
16 |
11.5 |
0.2 |
2.4 |
2 |
| 97701 |
30 |
1.3 |
0.1 |
0.5 |
0 |
| 97702 |
10 |
2.7 |
0.1 |
1.0 |
0 |
| 97707 |
2 |
0.7 |
0.4 |
0.6 |
0 |
| 97709 |
2 |
2.4 |
0.9 |
1.6 |
0 |
| 97720 |
12 |
3.6 |
0.3 |
1.4 |
0 |
| 97733 |
11 |
3.2 |
0.1 |
0.9 |
0 |
| 97734 |
1 |
0.4 |
0.4 |
0.4 |
0 |
| 97739 |
2 |
1.3 |
1.0 |
1.1 |
0 |
| 97741 |
1 |
0.9 |
0.9 |
0.9 |
0 |
| 97750 |
2 |
4.9 |
0.9 |
2.9 |
1 |
| 97754 |
11 |
3.6 |
0.5 |
2.4 |
0 |
| 97756 |
10 |
1.3 |
0.2 |
0.4 |
0 |
| 97759 |
6 |
7.2 |
0.4 |
2.5 |
1 |
| 97760 |
2 |
1.3 |
0.1 |
0.7 |
0 |
| 97801 |
24 |
7.7 |
0.1 |
1.9 |
2 |
| 97814 |
12 |
10.0 |
0.1 |
3.4 |
3 |
| 97818 |
1 |
1.0 |
1.0 |
1.0 |
0 |
| 97823 |
1 |
2.1 |
2.1 |
2.1 |
0 |
| 97826 |
2 |
2.5 |
0.6 |
1.6 |
0 |
| 97828 |
3 |
9.9 |
2.1 |
5.3 |
1 |
| 97830 |
1 |
1.1 |
1.1 |
1.1 |
0 |
| 97833 |
2 |
4.7 |
2.3 |
3.5 |
1 |
| 97834 |
6 |
8.0 |
1.3 |
5.0 |
5 |
| 97836 |
2 |
3.2 |
2.9 |
3.0 |
0 |
| 97837 |
1 |
0.2 |
0.2 |
0.2 |
0 |
| 97838 |
8 |
4.0 |
0.6 |
2.3 |
0 |
| 97839 |
1 |
1.7 |
1.7 |
1.7 |
0 |
| 97846 |
3 |
2.9 |
0.2 |
1.2 |
0 |
| 97850 |
5 |
3.5 |
0.8 |
2.3 |
0 |
| 97862 |
13 |
14.0 |
0.7 |
5.0 |
7 |
| 97865 |
1 |
1.0 |
1.0 |
1.0 |
0 |
| 97868 |
1 |
0.6 |
0.6 |
0.6 |
0 |
| 97870 |
2 |
4.1 |
1.0 |
2.5 |
1 |
| 97875 |
2 |
1.3 |
0.1 |
0.7 |
0 |
| 97877 |
1 |
2.1 |
2.1 |
2.1 |
0 |
| 97885 |
2 |
0.2 |
0.1 |
0.2 |
0 |
| 97886 |
2 |
1.8 |
1.0 |
1.4 |
0 |
| 97901 |
1 |
1.4 |
1.4 |
1.4 |
0 |
| 97913 |
2 |
1.3 |
0.8 |
1.1 |
0 |
| 97914 |
6 |
1.8 |
0.6 |
1.3 |
0 |
| 97918 |
5 |
2.7 |
0.7 |
1.3 |
0 |
* This value was not used to calculate the average for this zip code.
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