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Radon Levels in Hooker County, Nebraska

EPA puts Hooker County in Zone 3, its lowest radon zone, and only 9 radon tests from it are on file with CDC (2023). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Share at 4+ pCi/L

    20.0%

    24.5 pts below NE

    Hooker
    20.0%
    Nebraska
    44.5%

    30 tests, 2018

  • Median result

    1.3pCi/L

    Below action level

    Hooker
    1.3 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2018

  • Tests reported

    30

    73rd of 73 by tests

    Hooker
    30
    Lancaster
    17,193

    Reported to CDC before any fix, 2018

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

  • Rank in Nebraska

    70 of 73

    Lowest quarter

    Hooker
    20.0%
    Colfax
    74.1%

    By share, of 73 with 30+ tests

Read a result for Hooker County

Starts at Hooker County's median, 1.3 pCi/L

1.3pCi/L

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

EPA’s reading of 1.3 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. Hooker County's median reported result, 2018.

The data

Hooker County, At a glance

Hooker County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Hooker County as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

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

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Hooker County, 2023

Share of reported tests at or above 4 pCi/L, by year, Hooker County
Share of reported tests at or above 4 pCi/L, by year, Hooker County
YearShare of reported tests at or above 4 pCi/L
20140.0%
20160.0%
20170.0%
201820.0%
201950.0%
202025.0%
20210.0%
20230.0%

2023: 0.0%. Across these years the share ran from 0.0% to 50.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 9 tests were reported to CDC for Hooker County over 2023, and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor 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

Hooker County, Compared

Hooker County radon figures, compared

Calculated by Radon411

Hooker County's 30 reported tests in 2018 had a middle value of 1.3 pCi/L and a maximum of 5.4 pCi/L, and 20.0% reached 4 pCi/L. Nebraska as a whole (85 Nebraska counties, pooled) comes to 44.5%: 24.5 points higher than here.

The newest figure, in 2023, counts only 9 tests (0.0% at or above 4 pCi/L), too few to compare, so this reading uses the 30-test figure.

Among its state's counties it ranks 70th of 73 Nebraska counties with 30 or more tests for the same period. Statewide for the same period, Colfax County reported the highest share (74.1%) and Cherry County the lowest (10.0%).

Below the action level, 24 tests (80.0%) came in under 2 pCi/L, against 30.7% statewide, and 0 tests (0.0%) fell between 2 and 4, against 24.8% statewide. The busiest year on file was 2018, with 30 tests reported; the quietest, 2019, had 6.

EPA's 1993 zone map puts Hooker County in Zone 3, a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.

Cherry County, the one bordering county with a figure for the same period, reported 10.0%.

Hooker County against Nebraska, the United States and nearby counties, 2018
AreaTestsAt or above 4 pCi/LMedianDifference from Hooker County
Hooker County3020.0%1.3 pCi/LThis county
Nebraska, pooled85 counties, pooled62,67644.5%Not pooled+24.5 points
United States, pooled773 counties, pooled389,55129.1%Not pooled+9.1 points
Colfax Countyhighest in the state8174.1%8.3 pCi/L+54.1 points
Dawson Countylowest in the state49815.1%1.6 pCi/L−4.9 points
Cherry County, NEborders it6010.0%1.1 pCi/L−10.0 points
Grant County, NEborders it120.0%1.4 pCi/L−20.0 points
Where Hooker County's reported results fell, 2018, beside Nebraska and the United States
ResultHooker County testsHooker County shareNebraska shareU.S. shareAgainst Nebraska
Under 2 pCi/L2480.0%30.7%48.3%+49.3 points
2 to 4 pCi/L00.0%24.8%22.6%−24.8 points
4 pCi/L and above620.0%44.5%29.1%−24.5 points
Hooker County ranked among the 73 Nebraska counties with 30 or more tests, by share at or above 4 pCi/L, 2018
CountyRankTestsAt or above 4 pCi/LMedian
Box Butte County63 of 7348335.4%3.3 pCi/L
Cheyenne County64 of 7333033.6%3.1 pCi/L
Merrick County65 of 739933.3%2.8 pCi/L
Lancaster County66 of 7317,19331.5%1.9 pCi/L
Chase County67 of 734831.3%3.2 pCi/L
Hall County68 of 731,08628.5%2.6 pCi/L
Keith County69 of 738125.9%2.7 pCi/L
Hooker County70 of 733020.0%1.3 pCi/L
Lincoln County71 of 7360016.0%2.2 pCi/L
Dawson County72 of 7349815.1%1.6 pCi/L
Cherry County73 of 736010.0%1.1 pCi/L
Hooker County radon tests by year, against Nebraska's pooled share
YearTestsAt or above 4 pCi/LMedianHighestNebraska, pooledChange from the row before
202390.0%0.6 pCi/L2.3 pCi/L38.2%Level
2021120.0%0.7 pCi/L2.5 pCi/L34.9%−25.0 points
20201225.0%2.6 pCi/L6.6 pCi/L42.2%−25.0 points
2019650.0%3.9 pCi/L6.6 pCi/L44.3%+30.0 points
20183020.0%1.3 pCi/L5.4 pCi/L44.5%+20.0 points
201760.0%1.5 pCi/L2.0 pCi/L47.7%Level
201660.0%1.9 pCi/L2.1 pCi/L47.4%Level
201490.0%2.4 pCi/L2.6 pCi/L50.5%First on file

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

Hooker County, Geology

The ground under Hooker County

Predicted

USGS's geologic map puts all of Hooker County's mapped land in one class: low radon potential. All of it lies in the area the map calls Sand Hills, to which USGS gives a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under Hooker County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Sand HillsQuaternary windblown sand.Low8100%

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

Hooker County beside the ground around it

Across Nebraska 40.9% of the land is rated high; none of Hooker County's is. Of the 5 counties that border it, 1 has more moderate-potential ground, Cherry County the most at 1.5%.

Share of land by USGS radon potential: Hooker County, the 5 counties bordering it and Nebraska
AreaEPA zoneLow potentialModerate potentialHigh potential
Hooker CountyZone 3100%NoneNone
McPherson CountyZone 3100%NoneNone
Thomas CountyZone 3100%NoneNone
Grant CountyZone 3100%NoneNone
Arthur CountyZone 3100%NoneNone
Cherry CountyZone 398.5%1.5%None
Nebraska93 counties, pooled by land areaVaries28.2%30.9%40.9%

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

What it means

Hooker County, Questions

Questions about radon in Hooker County

Are radon levels high in Hooker County?

In 2023, 0.0% of the radon tests reported to CDC for Hooker County, Nebraska were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.6 pCi/L. Of 73 Nebraska counties with 30 or more tests for the same period, 69 reported a higher share; pooled, the state comes to 44.5%.

Which counties border Hooker County?

Hooker County borders 5 counties: McPherson County, Thomas County, Grant County, Arthur County and Cherry County.

Products

Hooker County, Products

Testing a home in Hooker County

In Hooker County, 20.0% of 30 tests reported to CDC in 2018 reached 4 pCi/L, against 44.5% pooled across Nebraska. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Hooker County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Hooker County homes, compared

Explore

Hooker County, Bordering counties

Counties bordering Hooker County

Calculated by Radon411

Hooker County, Cities and towns

Cities and towns in Hooker County

About 686 people live in Hooker County by the Census Bureau's estimate for July 1, 2025, 20 fewer than in 2020 (−2.8%). Spread over its land, that is 1.0 people to the square mile. Mullen, its one incorporated place, has 457 residents, 66.6% of the total. CDC's 30 reported tests for 2018 work out to 43.7 per 1,000 residents (2025 estimate), close to Nebraska's 31.1.

Mullen is the one incorporated place here; CDC publishes no figure by town, so it reads Hooker County's.

Mullen, Hooker County: residents on July 1, 2025
PlaceResidentsSince 2020Share of residents
Mullen457−7.5%66.6%

One incorporated place, 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).

Hooker County, Homes

Homes in Hooker County

Hooker County is a place of houses on their own lots: 89% of its 415 homes are detached single-family houses, against 72% across Nebraska. The homes are older than Nebraska's as a whole: half were built before 1959 (1975 for Nebraska), and 51% date from before 1960. 60% 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 Hooker County, Nebraska, 2019 to 2023
HomesHooker CountyNebraska
Housing units415855,631
Detached houses89%72%
In buildings of 5 or more4%17%
Mobile homes4%3%
Built before 196051%32%
Built since 20009%22%
Middle year built19591975
Owner-occupied60%67%

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