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Radon Levels in Gage County, Nebraska

EPA puts Gage County in Zone 1, its highest radon zone, and high results are common there: 79.8% of the 84 radon tests reported to CDC (2023) 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

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    79.8%

    41.6 pts above NE

    Gage
    79.8%
    Nebraska
    38.2%

    84 tests, 2023

  • Median result

    9.4pCi/L

    Action level reached

    Gage
    9.4 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2023

  • Tests reported

    84

    17th of 33 by tests

    Gage
    84
    Lancaster
    4,058

    Reported to CDC before any fix, 2023

  • EPA radon zone

    Zone 1

    Highest potential

    1. Zone 1
    2. 2
    3. 3

    1 highest, 3 lowest

    EPA predicts over 4 pCi/L indoors

  • Rank in Nebraska

    1 of 33

    Top quarter

    Gage
    79.8%
    Gage
    79.8%

    By share, of 33 with 30+ tests

Read a result for Gage County

Starts at Gage County's median, 9.4 pCi/L

9.4pCi/L

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

EPA’s reading of 9.4 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. Gage County's median reported result, 2023.

Interpret this readingWhat a fix costs

The data

Gage County, At a glance

Gage County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Gage County in and predicts an average indoor of greater than 4 pCi/L (greater than 150 Bq/m³) across the county. That is one forecast for the whole county, not a reading of any address in it; homes above EPA's turn up in all three zones.

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

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Gage County, 2023

Share of reported tests at or above 4 pCi/L, by year, Gage County
Share of reported tests at or above 4 pCi/L, by year, Gage County
YearShare of reported tests at or above 4 pCi/L
201462.8%
201559.7%
201660.2%
201757.3%
201869.0%
201950.8%
202066.1%
202163.3%
202276.8%
202379.8%

2023: 79.8%. Across these years the share ran from 50.8% to 79.8%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

These are the 84 tests reported to CDC for Gage 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

Gage County, Compared

Gage County radon figures, compared

Calculated by Radon411

More than half: 79.8% of the 84 radon tests reported to CDC for Gage County in 2023 read at least 4 pCi/L. That places it 1st of 33 Nebraska counties with 30 or more tests for the same period. That is 41.6 points above the 38.2% pooled from 86 Nebraska counties.

The median result, 9.4 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 35.1 pCi/L. The rest split 4.8% under 2 pCi/L and 15.5% from 2 to 4 (Nebraska: 39.2% and 22.6%). Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 79.8% share point the same way here.

No bordering county with a figure for the same period reported a higher share; the closest is Otoe County at 64.4%, the lowest Lancaster County at 26.7%. Statewide for the same period, Cedar County reported the highest share (78.0%) and Dakota County the lowest (3.1%).

The busiest year on file was 2017, with 801 tests reported; the quietest, 2022, had 82.

Over 10 years of annual figures the share rose 17.0 points, from 62.8% in 2014 to 79.8% in 2023; its peak was 79.8% in 2023. Nationally, every county with a figure for the same period pools to 33.4%; Gage County sits 46.4 points above it. CDC also counts 46 tests taken after mitigation in Gage 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, Gage County against Nebraska2014 to 2023, years with 30 or more tests: Gage County 62.8% to 79.8%, the state's pooled share 38.2% in 2023.
Gage CountyNebraska, pooled
Share of reported tests at or above 4 pCi/L by year, Gage County against Nebraska: data table
YearTestsGage County, at or above 4 pCi/LNebraska, pooled
201459762.8%50.5%
201566359.7%53.3%
201655860.2%47.4%
201780157.3%47.7%
201856169.0%44.5%
201957350.8%44.3%
202049566.1%42.2%
202141763.3%34.9%
20228276.8%34.0%
20238479.8%38.2%
Gage County against Nebraska, the United States and nearby counties, 2023
AreaTestsAt or above 4 pCi/LMedianDifference from Gage County
Gage County8479.8%9.4 pCi/LThis county
Nebraska, pooled86 counties, pooled11,16338.2%Not pooled−41.6 points
United States, pooled642 counties, pooled128,74033.4%Not pooled−46.4 points
Cedar Countyhighest in the state5078.0%6.8 pCi/L−1.8 points
Dakota Countylowest in the state1303.1%0.4 pCi/L−76.7 points
Jefferson County, NEborders it1275.0%5.0 pCi/L−4.8 points
Otoe County, NEborders it5964.4%5.7 pCi/L−15.4 points
Johnson County, NEborders it1861.1%4.7 pCi/L−18.7 points
Saline County, NEborders it2951.7%4.2 pCi/L−28.1 points
Pawnee County, NEborders it450.0%5.1 pCi/L−29.8 points
Lancaster County, NEborders it4,05826.7%1.6 pCi/L−53.1 points
Where Gage County's reported results fell, 2023, beside Nebraska and the United States
ResultGage County testsGage County shareNebraska shareU.S. shareAgainst Nebraska
Under 2 pCi/L44.8%39.2%41.4%−34.4 points
2 to 4 pCi/L1315.5%22.6%25.2%−7.1 points
4 pCi/L and above6779.8%38.2%33.4%+41.6 points
Gage 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
Gage County1 of 338479.8%9.4 pCi/L
Cedar County2 of 335078.0%6.8 pCi/L
Seward County3 of 338877.3%7.8 pCi/L
Washington County4 of 337176.1%6.5 pCi/L
Wayne County5 of 334374.4%6.9 pCi/L
Saunders County6 of 339773.2%6.2 pCi/L
Cuming County7 of 333770.3%6.8 pCi/L
Stanton County8 of 333268.8%7.8 pCi/L
Cass County9 of 3311168.5%5.5 pCi/L
Madison County10 of 3321366.7%5.8 pCi/L
Adams County11 of 3315566.5%4.8 pCi/L
Gage County radon tests by year, against Nebraska's pooled share
YearTestsAt or above 4 pCi/LMedianHighestNebraska, pooledChange from the row before
20238479.8%9.4 pCi/L35.1 pCi/L38.2%+3.0 points
20228276.8%6.6 pCi/L42.6 pCi/L34.0%+13.5 points
202141763.3%5.5 pCi/L81.3 pCi/L34.9%−2.8 points
202049566.1%6.1 pCi/L66.8 pCi/L42.2%+15.3 points
201957350.8%4.1 pCi/L89.0 pCi/L44.3%−18.2 points
201856169.0%7.0 pCi/L59.1 pCi/L44.5%+11.7 points
201780157.3%5.0 pCi/L137.0 pCi/L47.7%−2.9 points
201655860.2%5.2 pCi/L32.9 pCi/L47.4%+0.5 points
201566359.7%5.3 pCi/L39.4 pCi/L53.3%−3.1 points
201459762.8%6.4 pCi/L32.5 pCi/L50.5%First on file

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

Gage County, Geology

The ground under Gage County

Predicted

USGS's geologic map puts all of Gage County's mapped land in one class: high radon potential. All of it lies in the area the map calls Pre-Wisconsin glacial deposits, to which USGS gives a radon index of 13, in the high band (12 to 17).

USGS's geologic areas under Gage County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Pre-Wisconsin glacial depositsLoess-mantled glacial drift.High1399.8%

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

Gage County beside the ground around it

Gage County has more high-potential ground than Nebraska as a whole: 100% of its land against 40.9%. Of the 8 counties that border it, none has as large a share of high-potential ground; Johnson County comes nearest at 100%.

Share of land by USGS radon potential: Gage County, the 8 counties bordering it and Nebraska
AreaEPA zoneLow potentialModerate potentialHigh potential
Gage CountyZone 1NoneNone100%
Johnson CountyZone 1NoneNone100%
Jefferson CountyZone 1NoneNone100%
Pawnee CountyZone 1None1.3%98.7%
Saline CountyZone 1NoneNone100%
Marshall County, KSZone 1None0.4%99.6%
Otoe CountyZone 1NoneNone100%
Washington County, KSZone 1None17.3%82.7%
Lancaster CountyZone 1NoneNone100%
Nebraska93 counties, pooled by land areaVaries28.2%30.9%40.9%

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

Local help

Gage County, Local resources

Radon testing and mitigation in Gage County

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

Gage County, Questions

Questions about radon in Gage County

Are radon levels high in Gage County?

In 2023, 79.8% of the radon tests reported to CDC for Gage County, Nebraska were at or above 4 pCi/L, and the median reported pre-mitigation result was 9.4 pCi/L. Of 33 Nebraska counties with 30 or more tests for the same period, none reported a higher share; pooled, the state comes to 38.2%.

Which counties border Gage County?

Gage County borders 8 counties: Johnson County, NE, Jefferson County, NE, Pawnee County, NE, Saline County, NE, Marshall County, KS, Otoe County, NE, Washington County, KS and Lancaster County, NE.

Products

Gage County, Products

Testing a home in Gage County

In Gage County, 79.8% of 84 tests reported to CDC in 2023 reached 4 pCi/L, against 38.2% pooled across Nebraska. In Zone 1 the year-round level in Gage 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

Gage County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Gage County

Explore

Gage County, Bordering counties

Counties bordering Gage County

Calculated by Radon411

Gage County, Cities and towns

Cities and towns in Gage County

Gage County's population has barely moved since 2020: 21,711 residents on July 1, 2025 against 21,661 then, by the Census Bureau's estimates. That works out to 25 people per square mile of land. Beatrice alone is home to 12,318 of them, 56.7% of the total. Together its 12 incorporated places hold 74.1% of those residents; the other 25.9% live outside any of them. CDC's 84 reported tests for 2023 work out to 3.9 per 1,000 residents (2025 estimate), close to Nebraska's 5.5.

From Beatrice to Liberty, CDC publishes no figure by town: each reads Gage County's.

The cities and towns in Gage County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Beatrice12,318+0.7%56.7%
Wymore1,341−2.3%6.2%
Adams623+4.0%2.9%
Cortland515Level2.4%
Blue Springs278−0.4%1.3%
Clatonia260−0.8%1.2%
Odell258−1.5%1.2%
Pickrell189Level0.9%
Filley121−1.6%0.6%
Barneston88−2.2%0.4%
Virginia71−1.4%0.3%
Liberty32−3.0%0.1%

12 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).

Gage County, Homes

Homes in Gage County

Gage County is a place of houses on their own lots: 84% of its 10,390 homes are detached single-family houses, against 72% across Nebraska. The homes are older than Nebraska's as a whole: half were built before 1962 (1975 for Nebraska), and 48% date from before 1960. 72% 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 Gage County, Nebraska, 2019 to 2023
HomesGage CountyNebraska
Housing units10,390855,631
Detached houses84%72%
In buildings of 5 or more6%17%
Mobile homes1%3%
Built before 196048%32%
Built since 200011%22%
Middle year built19621975
Owner-occupied72%67%

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