Short-term kitempowerDX
Standard Radon Test short-term mail-in radon test kit
- Lab fee included
Method: Passive sampler
In home: 48 to 96 hours
Locations and reports
Radon Levels in Antelope County, Nebraska
EPA puts Antelope County in Zone 2, its middle radon zone, and only 27 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
71.3%
12.8 pts above NE
- Antelope
- 71.3%
- Nebraska
- 58.5%
258 tests, 2008 to 2017
Median result
6.5pCi/L
Action level reached
- Antelope
- 6.5 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
258
37th of 77 by tests
- Antelope
- 258
- Douglas
- 8,556
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Nebraska
20 of 77
Middle half
- Antelope
- 71.3%
- Clay
- 85.1%
By share, of 77 with 30+ tests
Read a result for Antelope County
Starts at Antelope County's median, 6.5 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 6.5 pCi/L
At or above 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 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. Antelope County's median reported result, 2008 to 2017.
The data
Antelope County, At a glance
Antelope County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Antelope County is a
USGS geologic potential: Moderate across 81% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Antelope County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 46.2% |
| 2015 | 69.8% |
| 2016 | 58.1% |
| 2017 | 58.5% |
| 2018 | 62.0% |
| 2019 | 46.2% |
| 2020 | 47.4% |
| 2021 | 44.0% |
| 2022 | 66.7% |
| 2023 | 74.1% |
2023: 74.1%. Across these years the share ran from 44.0% to 74.1%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 27 tests were reported to CDC for Antelope 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).
Antelope County, Compared
Antelope County radon figures, compared
Calculated by Radon411More than half: 71.3% of the 258 radon tests reported to CDC for Antelope County over the 2008 to 2017 laboratory totals read at least 4 pCi/L. That places it 20th of 77 Nebraska counties with 30 or more tests for the same period. That is 12.8 points above the 58.5% pooled from 93 Nebraska counties.
The newest figure, in 2023, counts only 27 tests (74.1% at or above 4 pCi/L), too few to compare, so this reading uses the 258-test figure.
The median result, 6.5 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 31.2 pCi/L. The rest split 12.0% under 2 pCi/L and 16.7% from 2 to 4 (Nebraska: 18.6% and 22.8%). The reported tests do not follow EPA's Zone 2 label for Antelope County (predicted average between 2 and 4 pCi/L): 71.3% of them reached 4 pCi/L, fewer than that label suggests.
1 of its 5 bordering counties with figures ran higher, led by Boone County at 73.8%; Holt County reported 42.7%. Statewide for the same period, Clay County reported the highest share (85.1%) and Cherry County the lowest (13.3%).
The busiest year on file was 2015, with 189 tests reported; the quietest, 2022, had 24.
Over 8 years of annual figures the share fell 2.2 points, from 46.2% in 2014 to 44.0% in 2021; its peak was 69.8% in 2015. Nationally, every county with a figure for the same period pools to 35.7%; Antelope County sits 35.6 points above it. CDC also counts 5 tests taken after mitigation in Antelope County for the same period: tests in homes where a fix was already in.
Antelope CountyNebraska, pooled
44.0% % of tests34.9% % of tests
| Year | Tests | Antelope County, at or above 4 pCi/L | Nebraska, pooled |
|---|---|---|---|
| 2014 | 117 | 46.2% | 50.5% |
| 2015 | 189 | 69.8% | 53.3% |
| 2016 | 93 | 58.1% | 47.4% |
| 2017 | 159 | 58.5% | 47.7% |
| 2018 | 150 | 62.0% | 44.5% |
| 2019 | 156 | 46.2% | 44.3% |
| 2020 | 57 | 47.4% | 42.2% |
| 2021 | 150 | 44.0% | 34.9% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Antelope County, Geology
The ground under Antelope County
PredictedMost of the ground under Antelope County is one class on USGS's geologic map: 81.2% of its land is moderate radon potential, with 16.3% high and 2.5% low. The map puts 81.2% of Antelope County in the area it calls Pierre Shale and 16.3% in Pre-Wisconsin glacial deposits, with one smaller area beside them. USGS gives the first a radon index of 11, in the moderate band (9 to 11), and the second 13, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Pierre Shale | Cretaceous marine shale | Moderate | 11 | 81.2% |
| Pre-Wisconsin glacial deposits | Loess-mantled glacial drift. | High | 13 | 16.3% |
| Sand Hills | Quaternary windblown sand. | Low | 8 | 2.5% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Antelope County beside the ground around it
Nebraska as a whole has more high-potential ground than Antelope County: 40.9% of its land, against 16.3% here. Of the 6 counties that border it, 4 have more high-potential ground, Boone County the most at 92.7%.
The map rates the ground, not the air in any home.
Local help
Antelope County, Local resources
Radon testing and mitigation in Antelope County
- Office of Environmental Health Hazards & Indoor AirOffice of Environmental Health Hazards & Indoor Air, run by Nebraska Department of Health and Human Services, licenses or certifies radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Nebraska.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Some local programs distribute radon kits for free or a reduced cost.
- Compare kits
- Professionals in Nebraska116 professionals are listed in Nebraska.
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
Antelope County, Questions
Questions about radon in Antelope County
Are radon levels high in Antelope County?
In 2023, 74.1% of the radon tests reported to CDC for Antelope County, Nebraska were at or above 4 pCi/L, and the median reported pre-mitigation result was 4.6 pCi/L. Of 77 Nebraska counties with 30 or more tests for the same period, 19 reported a higher share; pooled, the state comes to 58.5%.
Which counties border Antelope County?
Antelope County borders 6 counties: Pierce County, Knox County, Madison County, Wheeler County, Holt County and Boone County.
Products
Antelope County, Products
Testing a home in Antelope County
In Antelope County, 71.3% of 258 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 58.5% pooled across Nebraska. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Antelope County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Monitor
Corentium Home 2 battery digital radon monitor
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- Screen, app
Method: Alpha spectrometry
Readings: Every 60 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Antelope County, Bordering counties
Counties bordering Antelope County
Calculated by Radon411- Radon levels in Boone CountyEPA zone 1
73.8%at or above 4 pCi/L
Median 6.3 pCi/L · 225 tests · 2.5 points above Antelope County
- Radon levels in Knox CountyEPA zone 1
68.8%at or above 4 pCi/L
Median 6.2 pCi/L · 401 tests · 2.5 points below Antelope County
- Radon levels in Madison CountyEPA zone 1
66.4%at or above 4 pCi/L
Median 6.1 pCi/L · 1,257 tests · 4.9 points below Antelope County
- Radon levels in Pierce CountyEPA zone 1
55.1%at or above 4 pCi/L
Median 4.5 pCi/L · 234 tests · 16.2 points below Antelope County
- Radon levels in Holt CountyEPA zone 3
42.7%at or above 4 pCi/L
Median 3.3 pCi/L · 349 tests · 28.6 points below Antelope County
- Radon levels in Wheeler CountyEPA zone 3
25.0%at or above 4 pCi/L
Median 0.9 pCi/L · 8 tests · 46.3 points below Antelope County
Antelope County, Cities and towns
Cities and towns in Antelope County
The Census Bureau estimates 6,352 residents in Antelope County for July 1, 2025, 65 more than in 2020 (+1.0%). Spread over its land, that is 7.4 people to the square mile. Its largest town, Neligh, has 1,551 residents, 24.4% of the total. Testing is reported here more often than across the state: CDC's 258 reported tests for 2008 to 2017 come to 40.6 for every 1,000 residents (2025 estimate), against 21.2 for Nebraska.
From Neligh to Royal, CDC publishes no figure by town: each reads Antelope County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Neligh | 1,551 | −0.4% | 24.4% |
| Tildenextends beyond Antelope County | 982 | −0.8% | Counted whole |
| Elgin | 706 | −1.7% | 11.1% |
| Orchard | 351 | −2.2% | 5.5% |
| Clearwater | 327 | +2.8% | 5.1% |
| Oakdale | 268 | −1.8% | 4.2% |
| Brunswick | 159 | +3.9% | 2.5% |
| Royal | 55 | −1.8% | 0.9% |
8 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). A place that extends beyond Antelope County is counted whole, so it has no share.
Antelope County, Homes
Homes in Antelope County
Antelope County is a place of houses on their own lots: 90% of its 3,144 homes are detached single-family houses, against 72% across Nebraska. The homes are older than Nebraska's as a whole: half were built before 1960 (1975 for Nebraska), and 50% date from before 1960. Owners live in 76% of the occupied homes (Nebraska: 67%), so for most households a test and a fix are their own to order.
| Homes | Antelope County | Nebraska |
|---|---|---|
| Housing units | 3,144 | 855,631 |
| Detached houses | 90% | 72% |
| In buildings of 5 or more | 4% | 17% |
| Mobile homes | 4% | 3% |
| Built before 1960 | 50% | 32% |
| Built since 2000 | 9% | 22% |
| Middle year built | 1960 | 1975 |
| Owner-occupied | 76% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.