Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Gooding County, Idaho
EPA puts Gooding County in Zone 1, its highest radon zone, and 28.4% of its 67 reported radon tests (2008 to 2017, laboratory totals) 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
28.4%
13.1 pts below ID
- Gooding
- 28.4%
- Idaho
- 41.5%
67 tests, 2008 to 2017
Median result
2.4pCi/L
Below action level
- Gooding
- 2.4 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
67
25th of 37 by tests
- Gooding
- 67
- Ada
- 3,030
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in Idaho
22 of 37
Middle half
- Gooding
- 28.4%
- Bear Lake
- 78.1%
By share, of 37 with 30+ tests
Read a result for Gooding County
Starts at Gooding County's median, 2.4 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.4 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. Gooding County's median reported result, 2008 to 2017.
The data
Gooding County, At a glance
Gooding County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Gooding County in
USGS geologic potential: High across 54% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Gooding County, 2008 to 2017, laboratory
Under 2 pCi/L: 48%2 to 4 pCi/L: 24%4 pCi/L and above: 28%
Of 67 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 32 | 47.8% |
| 2 to 4 pCi/L | 16 | 23.9% |
| 4 pCi/L and above | 19 | 28.4% |
What these figures count
These are the 67 tests reported to CDC for Gooding County over 2008 to 2017 (laboratory totals), 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: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Gooding County, Compared
Gooding County radon figures, compared
Calculated by Radon411Gooding County's 67 reported tests over the 2008 to 2017 laboratory totals had a middle value of 2.4 pCi/L and a maximum of 22.5 pCi/L, and 28.4% reached 4 pCi/L. Idaho as a whole (44 Idaho counties, pooled) comes to 41.5%: 13.1 points higher than here.
Among its state's counties it ranks 22nd of 37 Idaho counties with 30 or more tests for the same period. Statewide for the same period, Bear Lake County reported the highest share (78.1%) and Payette County the lowest (4.9%).
Below the action level, 32 tests (47.8%) came in under 2 pCi/L, against 31.5% statewide, and 16 tests (23.9%) fell between 2 and 4, against 26.9% statewide. CDC's ten-year totals for Gooding County went from 58 tests (2005 to 2014) to 67 (2008 to 2017), the share going from 29.3% to 28.4%.
EPA's 1993 zone map puts Gooding County in Zone 1, a predicted county average above 4 pCi/L. USGS geology rates 54% of the county's land high radon potential.
Next door, the shares run from 16.9% in Jerome County to 48.1% in Elmore County, with Twin Falls County and Jerome County below Gooding County.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Gooding County, Geology
The ground under Gooding County
PredictedUSGS's geologic map splits Gooding County: 53.8% of its land is high radon potential and 46.2% moderate. The map puts 53.8% of Gooding County in the area it calls Northern Rocky Mountain Province and 45.4% in Eastern Snake river plain and Malheur-Boise-King Section, with one smaller area beside them. USGS gives the first a radon index of 12, in the high band (12 to 17), and the second 10, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Northern Rocky Mountain Province | Diorite and granite of the Idaho batholith. | High | 12 | 53.8% |
| Eastern Snake river plain and Malheur-Boise-King Section | Basalt flows. | Moderate | 10 | 45.4% |
| Owyhee Upland | Tertiary and Quaternary basalt, andesite, and rhyolite. | Moderate | 9 | 0.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Gooding County beside the ground around it
On high-potential ground Gooding County is close to Idaho as a whole: 53.8% of its land against 50.7%. Of the 5 counties that border it, 2 have more high-potential ground, Camas County the most at 99.8%.
The map rates the ground, not the air in any home.
Local help
Gooding County, Local resources
Radon testing and mitigation in Gooding County
- DHW Environmental Health ProgramDHW Environmental Health Program, run by Idaho Department of Health and Welfare, offers free or discounted test kits, and answers questions about testing and mitigation in Idaho.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Order a free radon test kit.
- Compare kits
- See the Idaho directoryNo professionals are listed in Idaho yet. The state program can point you to registered testers and mitigators.
What Idaho's program says
- Phone
- 800-445-8647
- radon@dhw.idaho.gov
What it means
Gooding County, Questions
Questions about radon in Gooding County
Are radon levels high in Gooding County?
Over the 2008 to 2017 laboratory totals, 28.4% of the radon tests reported to CDC for Gooding County, Idaho were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.4 pCi/L. Of 37 Idaho counties with 30 or more tests for the same period, 21 reported a higher share; pooled, the state comes to 41.5%.
Which counties border Gooding County?
Gooding County borders 5 counties: Camas County, Lincoln County, Jerome County, Elmore County and Twin Falls County.
Products
Gooding County, Products
Testing a home in Gooding County
In Gooding County, 28.4% of 67 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 41.5% pooled across Idaho. In Zone 1 the year-round level in Gooding County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.
Test kits and monitors3
See every kit and monitor
Monitor
RadonScan-Plus USB-powered radon monitor with Wi-Fi
- C-NRPP 2024/25: Not included
- Plug-in
- Wi-Fi
- Alarm
- Screen, app
First reading: Within 5 minutes
Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Gooding County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Gooding County
Explore
Gooding County, Bordering counties
Counties bordering Gooding County
Calculated by Radon411- Radon levels in Elmore CountyEPA zone 1
48.1%at or above 4 pCi/L
Median 3.8 pCi/L · 158 tests · 19.7 points above Gooding County
- Radon levels in Lincoln CountyEPA zone 2
40.0%at or above 4 pCi/L
Median 3.3 pCi/L · 20 tests · 11.6 points above Gooding County
- Radon levels in Camas CountyEPA zone 1
27.3%at or above 4 pCi/L
Median 3.3 pCi/L · 11 tests · 1.1 points below Gooding County
- Radon levels in Twin Falls CountyEPA zone 2
24.1%at or above 4 pCi/L
Median 2.4 pCi/L · 369 tests · 4.3 points below Gooding County
- Radon levels in Jerome CountyEPA zone 2
16.9%at or above 4 pCi/L
Median 1.9 pCi/L · 65 tests · 11.5 points below Gooding County
Gooding County, Cities and towns
Cities and towns in Gooding County
Gooding County is growing: the Census Bureau puts it at 16,446 residents on July 1, 2025, up 5.1% from 15,647 in 2020. That works out to 23 people per square mile of land. Its largest town, Gooding, has 3,855 residents, 23.4% of the total. Together its 4 incorporated places hold 49.9% of those residents; the other 50.1% live outside any of them. Reported testing is thin here: 67 tests over 2008 to 2017, or 4.1 for every 1,000 residents (2025 estimate), where Idaho as a whole comes to 6.4.
From Gooding to Bliss, CDC publishes no figure by town: each reads Gooding County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Gooding | 3,855 | +3.8% | 23.4% |
| Wendell | 3,090 | +5.7% | 18.8% |
| Hagerman | 994 | +2.6% | 6.0% |
| Bliss | 262 | +4.0% | 1.6% |
4 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).
Gooding County, Homes
Homes in Gooding County
Of Gooding County's 6,100 homes, 73% are detached houses, against 74% across Idaho; 15% are mobile homes. The homes are older than Idaho's as a whole: half were built before 1976 (1990 for Idaho), and 27% date from before 1960. 71% of occupied homes are lived in by their owner (Idaho: 72%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Gooding County | Idaho |
|---|---|---|
| Housing units | 6,100 | 776,683 |
| Detached houses | 73% | 74% |
| In buildings of 5 or more | 5% | 9% |
| Mobile homes | 15% | 7% |
| Built before 1960 | 27% | 18% |
| Built since 2000 | 15% | 35% |
| Middle year built | 1976 | 1990 |
| Owner-occupied | 71% | 72% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.