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Radon Levels in Frontier County, Nebraska

EPA puts Frontier County in Zone 1, its highest radon zone, and only 4 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

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    67.7%

    14.4 pts above NE

    Frontier
    67.7%
    Nebraska
    53.3%

    93 tests, 2015

  • Median result

    4.9pCi/L

    Action level reached

    Frontier
    4.9 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2015

  • Tests reported

    93

    57th of 73 by tests

    Frontier
    93
    Douglas
    20,157

    Reported to CDC before any fix, 2015

  • 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

    24 of 73

    Middle half

    Frontier
    67.7%
    Thurston
    80.0%

    By share, of 73 with 30+ tests

Read a result for Frontier County

Starts at Frontier County's median, 4.9 pCi/L

4.9pCi/L

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

EPA’s reading of 4.9 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. Frontier County's median reported result, 2015.

Interpret this readingWhat a fix costs

The data

Frontier County, At a glance

Frontier County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Frontier 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 Frontier County, 2023

Share of reported tests at or above 4 pCi/L, by year, Frontier County
Share of reported tests at or above 4 pCi/L, by year, Frontier County
YearShare of reported tests at or above 4 pCi/L
201483.3%
201567.7%
201675.0%
201750.0%
201820.0%
201925.0%
202050.0%
202150.0%
202225.0%
2023100.0%

2023: 100.0%. Across these years the share ran from 20.0% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 4 tests were reported to CDC for Frontier 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

Frontier County, Compared

Frontier County radon figures, compared

Calculated by Radon411

More than half: 67.7% of the 93 radon tests reported to CDC for Frontier County in 2015 read at least 4 pCi/L. That places it 24th of 73 Nebraska counties with 30 or more tests for the same period. That is 14.4 points above the 53.3% pooled from 89 Nebraska counties.

The newest figure, in 2023, counts only 4 tests (100.0% at or above 4 pCi/L), too few to compare, so this reading uses the 93-test figure.

The median result, 4.9 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 22.5 pCi/L. The rest split 16.1% under 2 pCi/L and 16.1% from 2 to 4 (Nebraska: 20.6% and 26.1%). Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 67.7% share point the same way here.

No bordering county with a figure for the same period reported a higher share; the closest is Gosper County at 58.3%, the lowest Lincoln County at 27.6%. Statewide for the same period, Thurston County reported the highest share (80.0%) and Howard County the lowest (24.4%).

The busiest year on file was 2015, with 93 tests reported; the quietest, 2023, had 4.

Nationally, every county with a figure for the same period pools to 35.5%; Frontier County sits 32.2 points above it.

Frontier County against Nebraska, the United States and nearby counties, 2015
AreaTestsAt or above 4 pCi/LMedianDifference from Frontier County
Frontier County9367.7%4.9 pCi/LThis county
Nebraska, pooled89 counties, pooled61,36253.3%Not pooled−14.4 points
United States, pooled842 counties, pooled454,88735.5%Not pooled−32.2 points
Thurston Countyhighest in the state13580.0%9.2 pCi/L+12.3 points
Howard Countylowest in the state12324.4%2.5 pCi/L−43.3 points
Hayes County, NEborders it1866.7%5.3 pCi/L−1.0 points
Gosper County, NEborders it3658.3%5.7 pCi/L−9.4 points
Furnas County, NEborders it11452.6%4.2 pCi/L−15.1 points
Red Willow County, NEborders it49550.9%4.0 pCi/L−16.8 points
Dawson County, NEborders it22839.5%2.6 pCi/L−28.2 points
Hitchcock County, NEborders it5438.9%3.3 pCi/L−28.8 points
Lincoln County, NEborders it51027.6%2.6 pCi/L−40.1 points
Where Frontier County's reported results fell, 2015, beside Nebraska and the United States
ResultFrontier County testsFrontier County shareNebraska shareU.S. shareAgainst Nebraska
Under 2 pCi/L1516.1%20.6%40.0%−4.5 points
2 to 4 pCi/L1516.1%26.1%24.4%−10.0 points
4 pCi/L and above6367.7%53.3%35.5%+14.4 points
Frontier County ranked among the 73 Nebraska counties with 30 or more tests, by share at or above 4 pCi/L, 2015
CountyRankTestsAt or above 4 pCi/LMedian
Burt County19 of 7339969.2%6.7 pCi/L
Kimball County20 of 734868.8%4.6 pCi/L
Richardson County21 of 7315368.6%6.9 pCi/L
Madison County22 of 731,09868.6%6.4 pCi/L
Franklin County23 of 7312368.3%6.2 pCi/L
Frontier County24 of 739367.7%4.9 pCi/L
Jefferson County25 of 7323466.7%5.9 pCi/L
Polk County25 of 7311766.7%5.7 pCi/L
Cuming County27 of 7319566.2%5.9 pCi/L
Hamilton County28 of 7335765.5%6.1 pCi/L
Perkins County29 of 733363.6%4.3 pCi/L
Frontier County radon tests by year, against Nebraska's pooled share
YearTestsAt or above 4 pCi/LMedianHighestNebraska, pooledChange from the row before
20234100.0%10.2 pCi/L20.9 pCi/L38.2%+75.0 points
2022425.0%2.3 pCi/L5.8 pCi/L34.0%−25.0 points
20211850.0%3.8 pCi/L5.5 pCi/L34.9%Level
20201250.0%4.0 pCi/L5.6 pCi/L42.2%+25.0 points
20192425.0%3.1 pCi/L8.2 pCi/L44.3%+5.0 points
20181520.0%3.1 pCi/L14.3 pCi/L44.5%−30.0 points
20172450.0%4.5 pCi/L5.8 pCi/L47.7%−25.0 points
20162475.0%7.1 pCi/L14.9 pCi/L47.4%+7.3 points
20159367.7%4.9 pCi/L22.5 pCi/L53.3%−15.6 points
20141883.3%7.1 pCi/L7.7 pCi/L50.5%First on file

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

Frontier County, Geology

The ground under Frontier County

Predicted

USGS's geologic map puts all of Frontier County's mapped land in one class: high radon potential. All of it lies in the area the map calls Loess over K-T, to which USGS gives a radon index of 13, in the high band (12 to 17).

USGS's geologic areas under Frontier County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Loess over K-TLoess-mantled Tertiary and Cretaceous bedrock.High13100%

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

Frontier County beside the ground around it

Frontier County has more high-potential ground than Nebraska as a whole: 100% of its land against 40.9%. Of the 7 counties that border it, none has as large a share of high-potential ground; Gosper County comes nearest at 100%.

Share of land by USGS radon potential: Frontier County, the 7 counties bordering it and Nebraska
AreaEPA zoneLow potentialModerate potentialHigh potential
Frontier CountyZone 1NoneNone100%
Red Willow CountyZone 1NoneNone100%
Gosper CountyZone 1NoneNone100%
Furnas CountyZone 1NoneNone100%
Hayes CountyZone 116.2%1.5%82.3%
Dawson CountyZone 2None76.1%23.9%
Lincoln CountyZone 362.2%12.6%25.2%
Hitchcock 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

Frontier County, Local resources

Radon testing and mitigation in Frontier 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

Frontier County, Questions

Questions about radon in Frontier County

Are radon levels high in Frontier County?

In 2023, 100.0% of the radon tests reported to CDC for Frontier County, Nebraska were at or above 4 pCi/L, and the median reported pre-mitigation result was 10.2 pCi/L. Of 73 Nebraska counties with 30 or more tests for the same period, 23 reported a higher share; pooled, the state comes to 53.3%.

Which counties border Frontier County?

Frontier County borders 7 counties: Red Willow County, Gosper County, Furnas County, Hayes County, Dawson County, Lincoln County and Hitchcock County.

Products

Frontier County, Products

Testing a home in Frontier County

In Frontier County, 67.7% of 93 tests reported to CDC in 2015 reached 4 pCi/L, against 53.3% pooled across Nebraska. In Zone 1 the year-round level in Frontier 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

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

Explore

Frontier County, Bordering counties

Counties bordering Frontier County

Calculated by Radon411

Frontier County, Cities and towns

Cities and towns in Frontier County

Frontier County is growing: the Census Bureau puts it at 2,655 residents on July 1, 2025, up 5.9% from 2,506 in 2020. Spread over its land, that is 2.7 people to the square mile. Its largest town, Curtis, has 843 residents, 31.8% of the total. Together its 5 incorporated places hold 59.7% of those residents; the other 40.3% live outside any of them. CDC's 93 reported tests for 2015 work out to 35.0 per 1,000 residents (2025 estimate), close to Nebraska's 30.4.

From Curtis to Stockville, CDC publishes no figure by town: each reads Frontier County's.

The cities and towns in Frontier County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Curtis843+4.5%31.8%
Eustis418+7.2%15.7%
Maywood275+4.6%10.4%
Moorefield27+3.8%1.0%
Stockville23+4.5%0.9%

5 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).

Frontier County, Homes

Homes in Frontier County

Frontier County is a place of houses on their own lots: 81% of its 1,372 homes are detached single-family houses, against 72% across Nebraska. The homes are older than Nebraska's as a whole: half were built before 1954 (1975 for Nebraska), and 54% 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 Frontier County, Nebraska, 2019 to 2023
HomesFrontier CountyNebraska
Housing units1,372855,631
Detached houses81%72%
In buildings of 5 or more3%17%
Mobile homes11%3%
Built before 196054%32%
Built since 20007%22%
Middle year built19541975
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.