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Radon Levels in Scotts Bluff County, Nebraska

EPA puts Scotts Bluff County in Zone 2, its middle radon zone, and 27.5% of its 273 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

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    27.5%

    10.7 pts below NE

    Scotts Bluff
    27.5%
    Nebraska
    38.2%

    273 tests, 2023

  • Median result

    1.8pCi/L

    Below action level

    Scotts Bluff
    1.8 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2023

  • Tests reported

    273

    4th of 33 by tests

    Scotts Bluff
    273
    Lancaster
    4,058

    Reported to CDC before any fix, 2023

  • 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 Nebraska

    27 of 33

    Lowest quarter

    Scotts Bluff
    27.5%
    Gage
    79.8%

    By share, of 33 with 30+ tests

Read a result for Scotts Bluff County

Starts at Scotts Bluff County's median, 1.8 pCi/L

1.8pCi/L

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

EPA’s reading of 1.8 pCi/L

Below 2 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 below 2 pCi/L, the level at which EPA says a fix should be considered. Scotts Bluff County's median reported result, 2023.

Interpret this reading

The data

Scotts Bluff County, At a glance

Scotts Bluff County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Scotts Bluff 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 Scotts Bluff County, 2023

Share of reported tests at or above 4 pCi/L, by year, Scotts Bluff County
Share of reported tests at or above 4 pCi/L, by year, Scotts Bluff County
YearShare of reported tests at or above 4 pCi/L
201453.6%
201545.7%
201653.8%
201753.2%
201842.0%
201948.4%
202041.7%
202148.3%
202248.6%
202327.5%

2023: 27.5%. Across these years the share ran from 27.5% to 53.8%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

These are the 273 tests reported to CDC for Scotts Bluff 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).

How to read these figures

Scotts Bluff County, Compared

Scotts Bluff County radon figures, compared

Calculated by Radon411

Scotts Bluff County's 273 reported tests in 2023 had a middle value of 1.8 pCi/L and a maximum of 20.1 pCi/L, and 27.5% reached 4 pCi/L. Nebraska as a whole (86 Nebraska counties, pooled) comes to 38.2%: 10.7 points higher than here.

Among its state's counties it ranks 27th of 33 Nebraska counties with 30 or more tests for the same period. Statewide for the same period, Gage County reported the highest share (79.8%) and Dakota County the lowest (3.1%).

Below the action level, 141 tests (51.6%) came in under 2 pCi/L, against 39.2% statewide, and 57 tests (20.9%) fell between 2 and 4, against 22.6% statewide. The busiest year on file was 2014, with 822 tests reported; the quietest, 2022, had 107.

EPA's 1993 zone map puts Scotts Bluff County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.

Box Butte County, the one bordering county with a figure for the same period, reported 35.2%. Over 10 years of annual figures the share fell 26.1 points, from 53.6% in 2014 to 27.5% in 2023; its peak was 53.8% in 2016.

CDC also counts 36 tests taken after mitigation in Scotts Bluff County for the same period: tests in homes where a fix was already in.

Share of reported tests at or above 4 pCi/L by year, Scotts Bluff County against Nebraska2014 to 2023, years with 30 or more tests: Scotts Bluff County 53.6% to 27.5%, the state's pooled share 38.2% in 2023.
Scotts Bluff CountyNebraska, pooled
Share of reported tests at or above 4 pCi/L by year, Scotts Bluff County against Nebraska: data table
YearTestsScotts Bluff County, at or above 4 pCi/LNebraska, pooled
201482253.6%50.5%
201569645.7%53.3%
201659153.8%47.4%
201742353.2%47.7%
201856442.0%44.5%
201937848.4%44.3%
202036041.7%42.2%
202145348.3%34.9%
202210748.6%34.0%
202327327.5%38.2%
Scotts Bluff County against Nebraska, the United States and nearby counties, 2023
AreaTestsAt or above 4 pCi/LMedianDifference from Scotts Bluff County
Scotts Bluff County27327.5%1.8 pCi/LThis county
Nebraska, pooled86 counties, pooled11,16338.2%Not pooled+10.7 points
United States, pooled642 counties, pooled128,74033.4%Not pooled+5.9 points
Gage Countyhighest in the state8479.8%9.4 pCi/L+52.3 points
Dakota Countylowest in the state1303.1%0.4 pCi/L−24.4 points
Morrill County, NEborders it757.1%4.7 pCi/L+29.6 points
Box Butte County, NEborders it5435.2%3.3 pCi/L+7.7 points
Sioux County, NEborders it425.0%2.1 pCi/L−2.5 points
Where Scotts Bluff County's reported results fell, 2023, beside Nebraska and the United States
ResultScotts Bluff County testsScotts Bluff County shareNebraska shareU.S. shareAgainst Nebraska
Under 2 pCi/L14151.6%39.2%41.4%+12.4 points
2 to 4 pCi/L5720.9%22.6%25.2%−1.7 points
4 pCi/L and above7527.5%38.2%33.4%−10.7 points
Scotts Bluff County ranked among the 33 Nebraska counties with 30 or more tests, by share at or above 4 pCi/L, 2023
CountyRankTestsAt or above 4 pCi/LMedian
Buffalo County22 of 3317355.5%4.2 pCi/L
Sarpy County23 of 3375551.9%4.1 pCi/L
Douglas County24 of 332,75438.7%2.9 pCi/L
Cheyenne County25 of 335536.4%3.6 pCi/L
Box Butte County26 of 335435.2%3.3 pCi/L
Scotts Bluff County27 of 3327327.5%1.8 pCi/L
Lancaster County28 of 334,05826.7%1.6 pCi/L
Platte County29 of 3321226.4%1.6 pCi/L
Dawson County30 of 339718.6%2.0 pCi/L
Hall County31 of 3325317.8%1.7 pCi/L
Lincoln County32 of 3327112.2%2.1 pCi/L
Scotts Bluff County radon tests by year, against Nebraska's pooled share
YearTestsAt or above 4 pCi/LMedianHighestNebraska, pooledChange from the row before
202327327.5%1.8 pCi/L20.1 pCi/L38.2%−21.1 points
202210748.6%3.7 pCi/L18.6 pCi/L34.0%+0.3 points
202145348.3%3.9 pCi/L19.6 pCi/L34.9%+6.6 points
202036041.7%3.6 pCi/L159.5 pCi/L42.2%−6.7 points
201937848.4%3.8 pCi/L14.9 pCi/L44.3%+6.4 points
201856442.0%3.6 pCi/L11.2 pCi/L44.5%−11.2 points
201742353.2%4.2 pCi/L20.1 pCi/L47.7%−0.6 points
201659153.8%4.2 pCi/L18.9 pCi/L47.4%+8.1 points
201569645.7%3.8 pCi/L41.0 pCi/L53.3%−7.9 points
201482253.6%4.1 pCi/L55.8 pCi/L50.5%First on file

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

Scotts Bluff County, Geology

The ground under Scotts Bluff County

Predicted

USGS's geologic map puts all of Scotts Bluff County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Tertiary Rocks, to which USGS gives a radon index of 11, in the moderate band (9 to 11).

USGS's geologic areas under Scotts Bluff County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Tertiary RocksTertiary sandstone, siltstone, and volcanic ash.Moderate11100%

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

Scotts Bluff County beside the ground around it

Across Nebraska 40.9% of the land is rated high; none of Scotts Bluff County's is. Of the 5 counties that border it, 2 have more high-potential ground, Sioux County the most at 12.0%.

Share of land by USGS radon potential: Scotts Bluff County, the 5 counties bordering it and Nebraska
AreaEPA zoneLow potentialModerate potentialHigh potential
Scotts Bluff CountyZone 2None100%None
Banner CountyZone 2None100%None
Morrill CountyZone 240.7%59.3%None
Box Butte CountyZone 226.0%74.0%None
Goshen County, WYZone 1None95.3%4.7%
Sioux CountyZone 2None88.0%12.0%
Nebraska93 counties, pooled by land areaVaries28.2%30.9%40.9%

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

Local help

Scotts Bluff County, Local resources

Radon testing and mitigation in Scotts Bluff County

Listed radon businesses with an address in Scotts Bluff County:

Listed radon professionals by town: Scottsbluff

What Nebraska's program says
Phone
(402) 471-1005
Licensing of radon professionals
If radon testing is done in schools, offices, or other places of work, it must be done by a licensed radon measurement business.

What it means

Scotts Bluff County, Questions

Questions about radon in Scotts Bluff County

Are radon levels high in Scotts Bluff County?

In 2023, 27.5% of the radon tests reported to CDC for Scotts Bluff County, Nebraska were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.8 pCi/L. Of 33 Nebraska counties with 30 or more tests for the same period, 26 reported a higher share; pooled, the state comes to 38.2%.

Which counties border Scotts Bluff County?

Scotts Bluff County borders 5 counties: Banner County, NE, Morrill County, NE, Box Butte County, NE, Goshen County, WY and Sioux County, NE.

Products

Scotts Bluff County, Products

Testing a home in Scotts Bluff County

In Scotts Bluff County, 27.5% of 273 tests reported to CDC in 2023 reached 4 pCi/L, against 38.2% pooled across Nebraska. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Scotts Bluff County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Scotts Bluff County homes, compared

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Scotts Bluff County, Bordering counties

Counties bordering Scotts Bluff County

Calculated by Radon411

Scotts Bluff County, Cities and towns

Cities and towns in Scotts Bluff County

About 35,586 people live in Scotts Bluff County by the Census Bureau's estimate for July 1, 2025, 460 fewer than in 2020 (−1.3%). That works out to 48 people per square mile of land. Its largest town, Scottsbluff, has 14,259 residents, 40.1% of the total. Together its 10 incorporated places hold 77.3% of those residents; the other 22.7% live outside any of them. CDC's 273 reported tests for 2023 work out to 7.7 per 1,000 residents (2025 estimate), close to Nebraska's 5.5.

From Scottsbluff to McGrew, CDC publishes no figure by town: each reads Scotts Bluff County's.

The cities and towns in Scotts Bluff County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Scottsbluff14,259−1.2%40.1%
Gering8,535−0.9%24.0%
Mitchell1,513−1.9%4.3%
Terrytown1,040−1.7%2.9%
Morrill918−1.9%2.6%
Minatare696−2.4%2.0%
Lyman249−2.7%0.7%
Henry131Level0.4%
Melbeta108−1.8%0.3%
McGrew68−2.9%0.2%

10 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).

Scotts Bluff County, Homes

Homes in Scotts Bluff County

Of Scotts Bluff County's 16,474 homes, 74% are detached houses, against 72% across Nebraska; 8% are in buildings of five or more homes. Half of its homes were built before 1968, close to Nebraska's 1975: 38% date from before 1960 and 12% from 2000 or later. 68% of occupied homes are lived in by their owner (Nebraska: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Scotts Bluff County, Nebraska, 2019 to 2023
HomesScotts Bluff CountyNebraska
Housing units16,474855,631
Detached houses74%72%
In buildings of 5 or more8%17%
Mobile homes5%3%
Built before 196038%32%
Built since 200012%22%
Middle year built19681975
Owner-occupied68%67%

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