Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Gosper County, Nebraska
EPA puts Gosper County in Zone 1, its highest radon zone, and only 7 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
75.0%
27.6 pts above NE
- Gosper
- 75.0%
- Nebraska
- 47.4%
96 tests, 2016
Median result
6.2pCi/L
Action level reached
- Gosper
- 6.2 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2016
Tests reported
96
55th of 71 by tests
- Gosper
- 96
- Douglas
- 20,817
Reported to CDC before any fix, 2016
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in Nebraska
4 of 71
Top quarter
- Gosper
- 75.0%
- Dixon
- 85.5%
By share, of 71 with 30+ tests
Read a result for Gosper County
Starts at Gosper County's median, 6.2 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 6.2 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. Gosper County's median reported result, 2016.
The data
Gosper County, At a glance
Gosper County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Gosper County in
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 Gosper County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 66.7% |
| 2015 | 58.3% |
| 2016 | 75.0% |
| 2017 | 50.0% |
| 2018 | 75.0% |
| 2019 | 36.4% |
| 2020 | 63.6% |
| 2021 | 44.4% |
| 2022 | 85.7% |
| 2023 | 100.0% |
2023: 100.0%. Across these years the share ran from 36.4% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 7 tests were reported to CDC for Gosper 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).
Gosper County, Compared
Gosper County radon figures, compared
Calculated by Radon411More than half: 75.0% of the 96 radon tests reported to CDC for Gosper County in 2016 read at least 4 pCi/L. That places it 4th of 71 Nebraska counties with 30 or more tests for the same period. That is 27.6 points above the 47.4% pooled from 89 Nebraska counties.
The newest figure, in 2023, counts only 7 tests (100.0% at or above 4 pCi/L), too few to compare, so this reading uses the 96-test figure.
The median result, 6.2 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 16.4 pCi/L. The rest split 12.5% under 2 pCi/L and 12.5% from 2 to 4 (Nebraska: 24.9% and 27.7%). Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 75.0% share point the same way here.
No bordering county with a figure for the same period reported a higher share; the closest is Phelps County at 46.8%, the lowest Furnas County at 44.4%. Statewide for the same period, Dixon County reported the highest share (85.5%) and Sheridan County the lowest (20.0%).
The busiest year on file was 2016, with 96 tests reported; the quietest, 2023, had 7.
Over 6 years of annual figures the share fell 3.1 points, from 66.7% in 2014 to 63.6% in 2020; its peak was 75.0% in 2016. Nationally, every county with a figure for the same period pools to 31.2%; Gosper County sits 43.8 points above it.
Gosper CountyNebraska, pooled
63.6% % of tests42.2% % of tests
| Year | Tests | Gosper County, at or above 4 pCi/L | Nebraska, pooled |
|---|---|---|---|
| 2014 | 45 | 66.7% | 50.5% |
| 2015 | 36 | 58.3% | 53.3% |
| 2016 | 96 | 75.0% | 47.4% |
| 2017 | 54 | 50.0% | 47.7% |
| 2019 | 33 | 36.4% | 44.3% |
| 2020 | 33 | 63.6% | 42.2% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Gosper County, Geology
The ground under Gosper County
PredictedUSGS's geologic map puts all of Gosper 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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Loess over K-T | Loess-mantled Tertiary and Cretaceous bedrock. | High | 13 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Gosper County beside the ground around it
Gosper County has more high-potential ground than Nebraska as a whole: 100% of its land against 40.9%. Of the 4 counties that border it, none has as large a share of high-potential ground; Frontier County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Gosper County, Local resources
Radon testing and mitigation in Gosper 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
Gosper County, Questions
Questions about radon in Gosper County
Are radon levels high in Gosper County?
In 2023, 100.0% of the radon tests reported to CDC for Gosper County, Nebraska were at or above 4 pCi/L, and the median reported pre-mitigation result was 8.6 pCi/L. Of 71 Nebraska counties with 30 or more tests for the same period, 3 reported a higher share; pooled, the state comes to 47.4%.
Which counties border Gosper County?
Gosper County borders 4 counties: Dawson County, Phelps County, Furnas County and Frontier County.
Products
Gosper County, Products
Testing a home in Gosper County
In Gosper County, 75.0% of 96 tests reported to CDC in 2016 reached 4 pCi/L, against 47.4% pooled across Nebraska. In Zone 1 the year-round level in Gosper 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
MonitorAEGTEST
HOUND-1011S rechargeable radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 12 hours
Short-term kit
PicoCan short-term charcoal canister radon test
- Lab fee included
Method: Charcoal
In home: 48 to 96 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Gosper County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Gosper County
Explore
Gosper County, Bordering counties
Counties bordering Gosper County
Calculated by Radon411- Radon levels in Frontier CountyEPA zone 1
75.0%at or above 4 pCi/L
Median 7.1 pCi/L · 24 tests · 0.0 points above Gosper County
- Radon levels in Phelps CountyEPA zone 1
46.8%at or above 4 pCi/L
Median 3.9 pCi/L · 333 tests · 28.2 points below Gosper County
- Radon levels in Dawson CountyEPA zone 2
45.8%at or above 4 pCi/L
Median 3.6 pCi/L · 393 tests · 29.2 points below Gosper County
- Radon levels in Furnas CountyEPA zone 1
44.4%at or above 4 pCi/L
Median 3.0 pCi/L · 54 tests · 30.6 points below Gosper County
Gosper County, Cities and towns
Cities and towns in Gosper County
About 1,803 people live in Gosper County by the Census Bureau's estimate for July 1, 2025, 92 fewer than in 2020 (−4.9%). Spread over its land, that is 3.9 people to the square mile. Its largest town, Elwood, has 615 residents, 34.1% of the total. Together its 2 incorporated places hold 37.4% of those residents; the other 62.6% live outside any of them. Testing is reported here more often than across the state: CDC's 96 reported tests for 2016 come to 53.2 for every 1,000 residents (2025 estimate), against 33.4 for Nebraska.
From Elwood to Smithfield, CDC publishes no figure by town: each reads Gosper County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Elwood | 615 | −6.5% | 34.1% |
| Smithfield | 59 | −1.7% | 3.3% |
2 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).
Gosper County, Homes
Homes in Gosper County
Gosper County is a place of houses on their own lots: 88% of its 1,209 homes are detached single-family houses, against 72% across Nebraska. Half of its homes were built before 1973, close to Nebraska's 1975: 34% date from before 1960 and 14% from 2000 or later. Owners live in 82% of the occupied homes (Nebraska: 67%), so for most households a test and a fix are their own to order.
| Homes | Gosper County | Nebraska |
|---|---|---|
| Housing units | 1,209 | 855,631 |
| Detached houses | 88% | 72% |
| In buildings of 5 or more | 1% | 17% |
| Mobile homes | 8% | 3% |
| Built before 1960 | 34% | 32% |
| Built since 2000 | 14% | 22% |
| Middle year built | 1973 | 1975 |
| Owner-occupied | 82% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.