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Radon Levels in Bingham County, Idaho

EPA puts Bingham County in Zone 2, its middle radon zone, and high results are common there: 52.0% of the 446 radon tests reported to CDC (2008 to 2017, laboratory totals) came back 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

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  • Share at 4+ pCi/L

    52.0%

    10.5 pts above ID

    Bingham
    52.0%
    Idaho
    41.5%

    446 tests, 2008 to 2017

  • Median result

    4.2pCi/L

    Action level reached

    Bingham
    4.2 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    446

    7th of 37 by tests

    Bingham
    446
    Ada
    3,030

    Reported to CDC before any fix, 2008 to 2017

  • EPA radon zone

    Zone 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

  • Rank in Idaho

    11 of 37

    Middle half

    Bingham
    52.0%
    Bear Lake
    78.1%

    By share, of 37 with 30+ tests

Read a result for Bingham County

Starts at Bingham County's median, 4.2 pCi/L

4.2pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 4.2 pCi/L

At or above 4 pCi/L

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 4 and aboveEPA says fix it

This result is at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. Bingham County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Bingham County, At a glance

Bingham County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Bingham County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

USGS geologic potential: Moderate across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Bingham County, 2008 to 2017, laboratory

Reported results by concentration band, Bingham County, 2008 to 2017, laboratory
Under 2 pCi/L: 20%2 to 4 pCi/L: 28%4 pCi/L and above: 52%

Of 446 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Bingham County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L8819.7%
2 to 4 pCi/L12628.3%
4 pCi/L and above23252.0%
What these figures count

These are the 446 tests reported to CDC for Bingham 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).

How to read these figures

Bingham County, Compared

Bingham County radon figures, compared

Calculated by Radon411

More than half: 52.0% of the 446 radon tests reported to CDC for Bingham County over the 2008 to 2017 laboratory totals read at least 4 pCi/L. That places it 11th of 37 Idaho counties with 30 or more tests for the same period. That is 10.5 points above the 41.5% pooled from 44 Idaho counties.

The median result, 4.2 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 98.4 pCi/L. The rest split 19.7% under 2 pCi/L and 28.3% from 2 to 4 (Idaho: 31.5% and 26.9%). The reported tests do not follow EPA's Zone 2 label for Bingham County (predicted average between 2 and 4 pCi/L): 52.0% of them reached 4 pCi/L, fewer than that label suggests.

2 of its 6 bordering counties with figures ran higher, led by Jefferson County at 67.1%; Power County reported 26.8%. Statewide for the same period, Bear Lake County reported the highest share (78.1%) and Payette County the lowest (4.9%).

CDC's ten-year totals for Bingham County went from 442 tests (2005 to 2014) to 446 (2008 to 2017), the share going from 49.8% to 52.0%.

Nationally, every county with a figure for the same period pools to 35.7%; Bingham County sits 16.3 points above it. CDC also counts 20 tests taken after mitigation in Bingham County for the same period: tests in homes where a fix was already in.

Bingham County against Idaho, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Bingham County
Bingham County44652.0%4.2 pCi/LThis county
Idaho, pooled44 counties, pooled12,96141.5%Not pooled−10.5 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled−16.3 points
Bear Lake Countyhighest in the state3278.1%7.8 pCi/L+26.1 points
Payette Countylowest in the state614.9%1.5 pCi/L−47.1 points
Butte County, IDborders it2975.9%12.8 pCi/L+23.9 points
Jefferson County, IDborders it20767.1%5.7 pCi/L+15.1 points
Blaine County, IDborders it35257.7%5.3 pCi/L+5.7 points
Caribou County, IDborders it5743.9%3.4 pCi/L−8.1 points
Bannock County, IDborders it73241.9%3.2 pCi/L−10.1 points
Bonneville County, IDborders it1,11740.1%3.4 pCi/L−11.9 points
Power County, IDborders it4126.8%2.5 pCi/L−25.2 points
Where Bingham County's reported results fell, 2008 to 2017, laboratory, beside Idaho and the United States
ResultBingham County testsBingham County shareIdaho shareU.S. shareAgainst Idaho
Under 2 pCi/L8819.7%31.5%39.6%−11.8 points
2 to 4 pCi/L12628.3%26.9%24.7%+1.4 points
4 pCi/L and above23252.0%41.5%35.7%+10.5 points
Bingham County ranked among the 37 Idaho counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Shoshone County6 of 378163.0%5.7 pCi/L
Kootenai County7 of 372,95561.0%6.0 pCi/L
Cassia County8 of 3712159.5%5.4 pCi/L
Blaine County9 of 3735257.7%5.3 pCi/L
Teton County10 of 3747353.3%4.4 pCi/L
Bingham County11 of 3744652.0%4.2 pCi/L
Adams County12 of 373151.6%4.0 pCi/L
Fremont County13 of 3710149.5%3.9 pCi/L
Elmore County14 of 3715848.1%3.8 pCi/L
Caribou County15 of 375743.9%3.4 pCi/L
Bannock County16 of 3773241.9%3.2 pCi/L
Bingham County ten-year laboratory totals, against Idaho's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestIdaho, pooledChange from the row before
2008 to 201744652.0%4.2 pCi/L98.4 pCi/L41.5%+0.8 points
2007 to 201645151.2%4.2 pCi/L98.4 pCi/L40.8%+0.9 points
2006 to 201547750.3%4.0 pCi/L98.4 pCi/L41.3%+0.5 points
2005 to 201444249.8%3.9 pCi/L98.4 pCi/L41.1%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Bingham County, Geology

The ground under Bingham County

Predicted

USGS's geologic map puts all of Bingham County's mapped land in one class: moderate radon potential. The map puts 69.6% of Bingham County in the area it calls Eastern Snake river plain and Malheur-Boise-King Section and 17.5% in Basin and Range, with one smaller area beside them. USGS gives the first a radon index of 10 and the second 11, both in the moderate band (9 to 11).

USGS's geologic areas under Bingham County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Eastern Snake river plain and Malheur-Boise-King SectionBasalt flows.Moderate1069.6%
Basin and RangeCenozoic to Paleozoic sedimentary rocks.Moderate1117.5%
Middle Rocky Mountain provinceComplexly folded, faulted, and metamorphosed rocks of volcanic origin.Moderate1112.9%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Bingham County beside the ground around it

Across Idaho 50.7% of the land is rated high; none of Bingham County's is. Of the 7 counties that border it, 4 have more high-potential ground, Blaine County the most at 63.2%.

Share of land by USGS radon potential: Bingham County, the 7 counties bordering it and Idaho
AreaEPA zoneLow potentialModerate potentialHigh potential
Bingham CountyZone 2None100%None
Bannock CountyZone 2None100%None
Power CountyZone 2None100%None
Bonneville CountyZone 2None92.4%7.6%
Jefferson CountyZone 2None99.2%0.8%
Caribou CountyZone 2None100%None
Butte CountyZone 1None46.9%53.1%
Blaine CountyZone 1None36.8%63.2%
Idaho44 counties, pooled by land areaVaries8.0%41.3%50.7%

The map rates the ground, not the air in any home.

Local help

Bingham County, Local resources

Radon testing and mitigation in Bingham County

What Idaho's program says
Phone
800-445-8647
Email
radon@dhw.idaho.gov

What it means

Bingham County, Questions

Questions about radon in Bingham County

Are radon levels high in Bingham County?

Over the 2008 to 2017 laboratory totals, 52.0% of the radon tests reported to CDC for Bingham County, Idaho were at or above 4 pCi/L, and the median reported pre-mitigation result was 4.2 pCi/L. Of 37 Idaho counties with 30 or more tests for the same period, 10 reported a higher share; pooled, the state comes to 41.5%.

Which counties border Bingham County?

Bingham County borders 7 counties: Bannock County, Power County, Bonneville County, Jefferson County, Caribou County, Butte County and Blaine County.

Products

Bingham County, Products

Testing a home in Bingham County

In Bingham County, 52.0% of 446 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 41.5% pooled across Idaho. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Bingham County; a long-term test tells the year-round average.

Test kits and monitors3

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Best radon monitors for Bingham County homes, compared

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Bingham County, Bordering counties

Counties bordering Bingham County

Calculated by Radon411

Bingham County, Cities and towns

Cities and towns in Bingham County

Bingham County is growing: the Census Bureau puts it at 51,153 residents on July 1, 2025, up 6.4% from 48,097 in 2020. That works out to 24 people per square mile of land. Its largest town, Blackfoot, has 13,361 residents, 26.1% of the total. CDC's 446 reported tests for 2008 to 2017 work out to 8.7 per 1,000 residents (2025 estimate), close to Idaho's 6.4.

From Blackfoot to Atomic City, CDC publishes no figure by town: each reads Bingham County's.

The 5 largest cities and towns in Bingham County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Blackfoot13,361+7.7%26.1%
Shelley5,303+9.6%10.4%
Aberdeen1,852+5.3%3.6%
Firth545+4.8%1.1%
Basalt376+5.0%0.7%
  • Atomic City

6 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).

Bingham County, Homes

Homes in Bingham County

Bingham County is a place of houses on their own lots: 76% of its 17,268 homes are detached single-family houses, against 74% across Idaho. The homes are older than Idaho's as a whole: half were built before 1977 (1990 for Idaho), and 27% date from before 1960. Owners live in 81% of the occupied homes (Idaho: 72%), so for most households a test and a fix are their own to order.

Homes in Bingham County, Idaho, 2019 to 2023
HomesBingham CountyIdaho
Housing units17,268776,683
Detached houses76%74%
In buildings of 5 or more3%9%
Mobile homes13%7%
Built before 196027%18%
Built since 200024%35%
Middle year built19771990
Owner-occupied81%72%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.