
Short-term kit![]()
PicoCan short-term charcoal canister radon test
- Lab fee included
Method: Charcoal
In home: 48 to 96 hours
Locations and reports
EPA puts Kimball County in Zone 2, its middle radon zone, and only 20 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
41.9%
18.5 pts below NE
93 tests, 2005 to 2014
Median result
3.3pCi/L
Below action level
Midpoint of the tests, 2005 to 2014
Tests reported
93
52nd of 73 by tests
Reported to CDC before any fix, 2005 to 2014
EPA radon zone
Zone 2
Moderate potential
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Nebraska
64 of 73
Lowest quarter
By share, of 73 with 30+ tests
Read a result for Kimball County
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.3 pCi/L
Between 2 and 4 pCi/L
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Kimball County's median reported result, 2005 to 2014.
The data
Kimball County, At a glance
Predicted: EPA radon zone
Kimball County is a
USGS geologic potential: Moderate across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 42.9% |
| 2015 | 68.8% |
| 2016 | 41.7% |
| 2017 | 66.7% |
| 2018 | 55.6% |
| 2019 | 62.5% |
| 2020 | 63.6% |
| 2021 | 44.4% |
| 2022 | 50.0% |
| 2023 | 40.0% |
2023: 40.0%. Across these years the share ran from 40.0% to 68.8%. Each column counts radon tests reported to CDC that year, not homes.
Only 20 tests were reported to CDC for Kimball 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).
Kimball County, Compared
In Kimball County, about 4 in 10 reported tests over the 2005 to 2014 laboratory totals (39 of 93) were at or above EPA's action level. Against the national pool of 36.0%, the gap is 5.9 points higher. Across 93 Nebraska counties pooled together, 60.4% of tests reached that level, so Kimball County runs 18.5 points below its state.
The newest figure, in 2023, counts only 20 tests (40.0% at or above 4 pCi/L), too few to compare, so this reading uses the 93-test figure.
Of 4 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 2 a smaller one; the spread is 25.6% (Laramie County, WY) to 50.7% (Cheyenne County). By share, Kimball County is 64th of 73 Nebraska counties with 30 or more tests for the same period.
Year by year, 2014 opened at 42.9% and 2020 closed at 63.6% (up 20.7 points), with 2015 the high at 68.8%. Half the tests came in under 3.3 pCi/L and half over it; the single highest reached 30.5 pCi/L. Below the action level, 15 tests (16.1%) came in under 2 pCi/L, against 17.5% statewide, and 39 tests (41.9%) fell between 2 and 4, against 22.1% statewide.
Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 41.9% share point the same way here. USGS geology rates 100% of the county's land moderate radon potential.
The busiest year on file was 2018, with 54 tests reported; the quietest, 2022, had 8.
| Year | Tests | Kimball County, at or above 4 pCi/L | Nebraska, pooled |
|---|---|---|---|
| 2014 | 42 | 42.9% | 50.5% |
| 2015 | 48 | 68.8% | 53.3% |
| 2016 | 36 | 41.7% | 47.4% |
| 2018 | 54 | 55.6% | 44.5% |
| 2019 | 48 | 62.5% | 44.3% |
| 2020 | 33 | 63.6% | 42.2% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Kimball County, Geology
USGS's geologic map puts all of Kimball County's mapped land in one class: moderate radon potential. 97.3% of it lies in the area the map calls Tertiary Rocks, to which USGS gives a radon index of 11, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Tertiary Rocks | Tertiary sandstone, siltstone, and volcanic ash. | Moderate | 11 | 97.3% |
| White River Formation | Siltstone, sandstone, conglomerate, volcanic tuff. | Moderate | 11 | 2.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Across Nebraska 40.9% of the land is rated high; none of Kimball County's is. Of the 5 counties that border it, 3 have more high-potential ground, Weld County, CO the most at 66.2%.
The map rates the ground, not the air in any home.
Local help
Kimball County, Local resources
Some local programs distribute radon kits for free or a reduced cost.
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
Kimball County, Questions
In 2023, 40.0% of the radon tests reported to CDC for Kimball County, Nebraska were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.4 pCi/L. Of 73 Nebraska counties with 30 or more tests for the same period, 63 reported a higher share; pooled, the state comes to 60.4%.
Kimball County borders 5 counties: Banner County, NE, Cheyenne County, NE, Logan County, CO, Laramie County, WY and Weld County, CO.
Products
Kimball County, Products
In Kimball County, 41.9% of 93 tests reported to CDC over the 2005 to 2014 laboratory totals reached 4 pCi/L, against 60.4% pooled across Nebraska. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Kimball County; a long-term test tells the year-round average.
Test kits and monitors: 1 of 3
Explore
Kimball County, Bordering counties
50.7%at or above 4 pCi/L
Median 4.0 pCi/L · 268 tests · 8.8 points above Kimball County
50.1%at or above 4 pCi/L
Median 4.0 pCi/L · 2,637 tests · 8.2 points above Kimball County
40.0%at or above 4 pCi/L
Median 3.1 pCi/L · 5 tests · 1.9 points below Kimball County
40.0%at or above 4 pCi/L
Median 3.2 pCi/L · 50 tests · 1.9 points below Kimball County
25.6%at or above 4 pCi/L
Median 2.5 pCi/L · 1,784 tests · 16.3 points below Kimball County
Kimball County, Cities and towns
About 3,391 people live in Kimball County by the Census Bureau's estimate for July 1, 2025, 18 fewer than in 2020 (−0.5%). Spread over its land, that is 3.6 people to the square mile. Kimball alone is home to 2,271 of them, 67.0% of the total. Together its 3 incorporated places hold 75.9% of those residents; the other 24.1% live outside any of them. Testing is reported here more often than across the state: CDC's 93 reported tests for 2005 to 2014 come to 27.4 for every 1,000 residents (2025 estimate), against 16.5 for Nebraska.
From Kimball to Bushnell, CDC publishes no figure by town: each reads Kimball County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Kimball | 2,271 | −0.3% | 67.0% |
| Dix | 195 | +0.5% | 5.8% |
| Bushnell | 108 | −1.8% | 3.2% |
3 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).
Kimball County, Homes
Kimball County is a place of houses on their own lots: 83% of its 1,812 homes are detached single-family houses, against 72% across Nebraska. The homes are older than Nebraska's as a whole: half were built before 1953 (1975 for Nebraska), and 64% 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 | Kimball County | Nebraska |
|---|---|---|
| Housing units | 1,812 | 855,631 |
| Detached houses | 83% | 72% |
| In buildings of 5 or more | 2% | 17% |
| Mobile homes | 9% | 3% |
| Built before 1960 | 64% | 32% |
| Built since 2000 | 6% | 22% |
| Middle year built | 1953 | 1975 |
| Owner-occupied | 72% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.