Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
Locations and reports
Radon Levels in Hood River County, Oregon
EPA puts Hood River County in Zone 2, its middle radon zone, and 39.0% of its 41 reported radon tests (2023) were at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
39.0%
20.1 pts above OR
- Hood River
- 39.0%
- Oregon
- 18.9%
41 tests, 2023
Median result
2.2pCi/L
Below action level
- Hood River
- 2.2 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2023
Tests reported
41
9th of 14 by tests
- Hood River
- 41
- Multnomah
- 792
Reported to CDC before any fix, 2023
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Oregon
1 of 14
Top quarter
- Hood River
- 39.0%
- Hood River
- 39.0%
By share, of 14 with 30+ tests
Read a result for Hood River County
Starts at Hood River County's median, 2.2 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.2 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Hood River County's median reported result, 2023.
The data
Hood River County, At a glance
Hood River County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Hood River County is a
USGS geologic potential: Moderate across 59% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Hood River County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 30.9% |
| 2015 | 32.6% |
| 2016 | 20.8% |
| 2017 | 29.0% |
| 2018 | 24.2% |
| 2019 | 29.6% |
| 2020 | 31.3% |
| 2021 | 19.4% |
| 2022 | 18.2% |
| 2023 | 39.0% |
2023: 39.0%. Across these years the share ran from 18.2% to 39.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 41 tests reported to CDC for Hood River County over 2023, many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).
Hood River County, Compared
Hood River County radon figures, compared
Calculated by Radon411In Hood River County, about 4 in 10 reported tests in 2023 (16 of 41) were at or above EPA's action level. Against the national pool of 33.4%, the gap is 5.6 points higher. Across 28 Oregon counties pooled together, 18.9% of tests reached that level, so Hood River County runs 20.1 points above its state.
Of 2 neighbours with a figure, none reported a larger share at or above 4 pCi/L; the spread is 15.9% (Clackamas County) to 27.8% (Multnomah County). By share, Hood River County is 1st of 14 Oregon counties with 30 or more tests for the same period.
Year by year, 2014 opened at 30.9% and 2023 closed at 39.0% (up 8.1 points), with 2023 the high at 39.0%. Half the tests came in under 2.2 pCi/L and half over it; the single highest reached 26.9 pCi/L. Below the action level, 19 tests (46.3%) came in under 2 pCi/L, against 59.5% statewide, and 6 tests (14.6%) fell between 2 and 4, against 21.6% statewide.
Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 39.0% share point the same way here. USGS geology rates 59% of the county's land moderate radon potential.
The busiest year on file was 2022, with 66 tests reported; the quietest, 2019, had 27.
Hood River CountyOregon, pooled
39.0% % of tests18.9% % of tests
| Year | Tests | Hood River County, at or above 4 pCi/L | Oregon, pooled |
|---|---|---|---|
| 2014 | 55 | 30.9% | 25.1% |
| 2015 | 46 | 32.6% | 27.4% |
| 2016 | 53 | 20.8% | 21.5% |
| 2017 | 31 | 29.0% | 19.2% |
| 2018 | 33 | 24.2% | 19.6% |
| 2020 | 64 | 31.3% | 16.8% |
| 2021 | 31 | 19.4% | 16.3% |
| 2022 | 66 | 18.2% | 20.2% |
| 2023 | 41 | 39.0% | 18.9% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Hood River County, Geology
The ground under Hood River County
PredictedUSGS's geologic map splits Hood River County: 58.9% of its land is moderate radon potential and 41.1% low. The map puts 41.1% of Hood River County in the area it calls Cascade Range and 33.6% in Columbia River Gorge, with one smaller area beside them. USGS gives the first a radon index of 7, in the low band (5 to 8), and the second 9, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Cascade Range | Western Cascade Range is Tertiary andesite, basalt flows, and pyroclastic rocks. Eastern Cascades are late Tertiary to Quaternary basaltic and andesitic volcanic rocks. | Low | 7 | 41.1% |
| Columbia River Gorge | River and lacustrine delta deposits and volcanic debris flows. | Moderate | 9 | 33.6% |
| Deschutes Umatilla Plateau | Tertiary basalt, basaltic breccia, tuffaceous sedimentary rocks and tuff. Elevated uranium in soils. | Moderate | 9 | 25.3% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Hood River County beside the ground around it
On moderate-potential ground Hood River County is close to Oregon as a whole: 58.9% of its land against 62.3%. Of the 5 counties that border it, 3 have more moderate-potential ground, Wasco County the most at 95.0%.
The map rates the ground, not the air in any home.
Local help
Hood River County, Local resources
Radon testing and mitigation in Hood River County
Listed radon businesses with an address in Hood River County:
- Oregon Radon Awareness ProgramOregon Radon Awareness Program, run by Oregon Health Authority, offers free or discounted test kits, and answers questions about testing and mitigation in Oregon.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Oregon Radon Awareness Program provides a FREE short-term radon test kit to those living in areas of Oregon where little radon testing has been done.
- Compare kits
- Professionals in Oregon38 professionals are listed in Oregon.
Listed radon professionals by town: Hood River
What Oregon's program says
- Radon.program@dhsoha.state.or.us
What it means
Hood River County, Questions
Questions about radon in Hood River County
Are radon levels high in Hood River County?
In 2023, 39.0% of the radon tests reported to CDC for Hood River County, Oregon were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.2 pCi/L. Of 14 Oregon counties with 30 or more tests for the same period, none reported a higher share; pooled, the state comes to 18.9%.
Which counties border Hood River County?
Hood River County borders 5 counties: Wasco County, OR, Skamania County, WA, Clackamas County, OR, Multnomah County, OR and Klickitat County, WA.
Products
Hood River County, Products
Testing a home in Hood River County
In Hood River County, 39.0% of 41 tests reported to CDC in 2023 reached 4 pCi/L, against 18.9% pooled across Oregon. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Hood River County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
MonitorINKBIRD
INK-RD3 battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Hood River County, Bordering counties
Counties bordering Hood River County
Calculated by Radon411- Radon levels in Wasco County, OREPA zone 2
37.5%at or above 4 pCi/L
Median 1.4 pCi/L · 16 tests · 1.5 points below Hood River County
- Radon levels in Multnomah County, OREPA zone 2
27.8%at or above 4 pCi/L
Median 2.0 pCi/L · 792 tests · 11.2 points below Hood River County
- Radon levels in Clackamas County, OREPA zone 3
15.9%at or above 4 pCi/L
Median 1.6 pCi/L · 321 tests · 23.1 points below Hood River County
- Radon levels in Skamania County, WAEPA zone 1
No CDC figure for 2023; its page reads it against its own neighbours.
- Radon levels in Klickitat County, WAEPA zone 2
No CDC figure for 2023; its page reads it against its own neighbours.
Hood River County, Cities and towns
Cities and towns in Hood River County
About 23,720 people live in Hood River County by the Census Bureau's estimate for July 1, 2025, 178 fewer than in 2020 (−0.7%). That works out to 45 people per square mile of land. Its largest town, Hood River, has 8,315 residents, 35.1% of the total. Together its 2 incorporated places hold 40.8% of those residents; the other 59.2% live outside any of them. Testing is reported here more often than across the state: CDC's 41 reported tests for 2023 come to 1.7 for every 1,000 residents (2025 estimate), against 0.5 for Oregon.
From Hood River to Cascade Locks, CDC publishes no figure by town: each reads Hood River County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Hood River | 8,315 | Level | 35.1% |
| Cascade Locks | 1,367 | −0.9% | 5.8% |
2 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).
Hood River County, Homes
Homes in Hood River County
Of Hood River County's 10,210 homes, 72% are detached houses, against 63% across Oregon; 11% are mobile homes. Half of its homes were built before 1981, close to Oregon's 1980: 29% date from before 1960 and 26% from 2000 or later. 68% of occupied homes are lived in by their owner (Oregon: 63%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Hood River County | Oregon |
|---|---|---|
| Housing units | 10,210 | 1,838,631 |
| Detached houses | 72% | 63% |
| In buildings of 5 or more | 8% | 17% |
| Mobile homes | 11% | 8% |
| Built before 1960 | 29% | 23% |
| Built since 2000 | 26% | 24% |
| Middle year built | 1981 | 1980 |
| Owner-occupied | 68% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.