Radon levels in Nebraska: Moderate
The model predicts a population-weighted basement average of 3.6 pCi/L across Nebraska's 93 counties - about 2.0× the US average of 1.8 pCi/L. Above-ground floors average 2.1 pCi/L.
Predicted (model estimate). The pCi/L figures on this page are long-term area averages from a peer-reviewed national model built on millions of real radon tests (2001-2021). They describe the typical home in this area - not your home, which can be several times higher or lower. The EPA radon zone is a separate, 1993 county-level classification. How the numbers work.
53 / 93
EPA Zone 1 counties (57%)
24 / 16
Zone 2 / Zone 3 counties
42
counties predicted ≥ 4 pCi/L
50.1%
of ZIP codes predicted ≥ 4 pCi/L
Nebraska counties by predicted radon
Sorted highest to lowest predicted basement average. 93 counties.
| County | Predicted basement | Upstairs | Grade | EPA zone | ZIPs |
|---|---|---|---|---|---|
| Burt County | 5.7 pCi/L | 3.3 | High | EPA Zone 1 | 5 |
| Dixon County | 5.6 pCi/L | 3.0 | High | EPA Zone 1 | 8 |
| Wayne County | 5.4 pCi/L | 2.3 | High | EPA Zone 1 | 4 |
| Butler County | 5.3 pCi/L | 2.9 | High | EPA Zone 1 | 9 |
| Polk County | 5.3 pCi/L | 2.8 | High | EPA Zone 1 | 5 |
| York County | 5.2 pCi/L | 2.8 | High | EPA Zone 1 | 6 |
| Nemaha County | 5.2 pCi/L | 2.9 | High | EPA Zone 1 | 6 |
| Cedar County | 5.2 pCi/L | 3.0 | High | EPA Zone 1 | 9 |
| Seward County | 5.2 pCi/L | 2.7 | High | EPA Zone 1 | 8 |
| Fillmore County | 5.0 pCi/L | 2.7 | High | EPA Zone 1 | 8 |
| Otoe County | 5.0 pCi/L | 2.6 | High | EPA Zone 1 | 10 |
| Saunders County | 5.0 pCi/L | 2.7 | High | EPA Zone 1 | 14 |
| Stanton County | 4.9 pCi/L | 2.8 | High | EPA Zone 1 | 2 |
| Cass County | 4.9 pCi/L | 2.7 | High | EPA Zone 1 | 13 |
| Thurston County | 4.9 pCi/L | 2.6 | High | EPA Zone 1 | 7 |
| Clay County | 4.9 pCi/L | 2.6 | High | EPA Zone 1 | 10 |
| Gage County | 4.8 pCi/L | 2.7 | High | EPA Zone 1 | 13 |
| Hamilton County | 4.8 pCi/L | 2.7 | High | EPA Zone 1 | 6 |
| Richardson County | 4.7 pCi/L | 2.6 | High | EPA Zone 1 | 8 |
| Webster County | 4.7 pCi/L | 2.5 | High | EPA Zone 1 | 5 |
| Nuckolls County | 4.6 pCi/L | 2.4 | High | EPA Zone 1 | 7 |
| Thayer County | 4.6 pCi/L | 2.4 | High | EPA Zone 1 | 11 |
| Dodge County | 4.5 pCi/L | 2.6 | High | EPA Zone 1 | 7 |
| Madison County | 4.5 pCi/L | 2.7 | High | EPA Zone 1 | 5 |
| Johnson County | 4.5 pCi/L | 2.5 | High | EPA Zone 1 | 5 |
| Saline County | 4.5 pCi/L | 2.6 | High | EPA Zone 1 | 7 |
| Washington County | 4.5 pCi/L | 2.9 | High | EPA Zone 1 | 5 |
| Kearney County | 4.4 pCi/L | 2.5 | High | EPA Zone 1 | 3 |
| Jefferson County | 4.4 pCi/L | 2.5 | High | EPA Zone 1 | 7 |
| Cuming County | 4.4 pCi/L | 2.6 | High | EPA Zone 1 | 4 |
| Franklin County | 4.4 pCi/L | 2.4 | High | EPA Zone 1 | 8 |
| Furnas County | 4.4 pCi/L | 2.4 | High | EPA Zone 1 | 7 |
| Boone County | 4.4 pCi/L | 2.6 | High | EPA Zone 1 | 5 |
| Nance County | 4.3 pCi/L | 2.4 | High | EPA Zone 1 | 3 |
| Harlan County | 4.3 pCi/L | 2.4 | High | EPA Zone 1 | 4 |
| Knox County | 4.3 pCi/L | 2.4 | High | EPA Zone 1 | 8 |
| Colfax County | 4.3 pCi/L | 2.3 | High | EPA Zone 1 | 4 |
| Frontier County | 4.3 pCi/L | 2.4 | High | EPA Zone 1 | 6 |
| Adams County | 4.2 pCi/L | 2.4 | High | EPA Zone 1 | 6 |
| Phelps County | 4.2 pCi/L | 2.5 | High | EPA Zone 1 | 5 |
| Boyd County | 4.1 pCi/L | 2.4 | High | EPA Zone 1 | 5 |
| Gosper County | 4.1 pCi/L | 2.3 | High | EPA Zone 1 | 2 |
| Pawnee County | 4.0 pCi/L | 2.3 | Moderate | EPA Zone 1 | 6 |
| Dakota County | 3.9 pCi/L | 2.2 | Moderate | EPA Zone 1 | 5 |
| Greeley County | 3.9 pCi/L | 2.3 | Moderate | EPA Zone 1 | 4 |
| Hayes County | 3.8 pCi/L | 2.2 | Moderate | EPA Zone 1 | 2 |
| Platte County | 3.8 pCi/L | 2.3 | Moderate | EPA Zone 1 | 7 |
| Red Willow County | 3.7 pCi/L | 2.2 | Moderate | EPA Zone 1 | 5 |
| Dawes County | 3.6 pCi/L | 2.0 | Moderate | EPA Zone 2 | 3 |
| Hitchcock County | 3.6 pCi/L | 2.0 | Moderate | EPA Zone 1 | 3 |
| Pierce County | 3.6 pCi/L | 2.0 | Moderate | EPA Zone 1 | 4 |
| Antelope County | 3.6 pCi/L | 1.8 | Moderate | EPA Zone 2 | 8 |
| Lancaster County | 3.5 pCi/L | 2.1 | Moderate | EPA Zone 1 | 35 |
| Buffalo County | 3.5 pCi/L | 1.9 | Moderate | EPA Zone 2 | 11 |
| Dundy County | 3.3 pCi/L | 1.8 | Moderate | EPA Zone 2 | 4 |
| Sarpy County | 3.2 pCi/L | 2.0 | Moderate | EPA Zone 1 | 11 |
| Keith County | 3.2 pCi/L | 1.8 | Moderate | EPA Zone 2 | 5 |
| Chase County | 3.1 pCi/L | 1.8 | Moderate | EPA Zone 2 | 4 |
| Howard County | 3.1 pCi/L | 1.6 | Moderate | EPA Zone 2 | 6 |
| Douglas County | 3.1 pCi/L | 2.0 | Moderate | EPA Zone 1 | 32 |
| Sioux County | 3.1 pCi/L | 1.5 | Moderate | EPA Zone 2 | 5 |
| Cheyenne County | 3.1 pCi/L | 1.8 | Moderate | EPA Zone 2 | 5 |
| Custer County | 3.1 pCi/L | 1.6 | Moderate | EPA Zone 2 | 11 |
| Valley County | 3.1 pCi/L | 1.7 | Moderate | EPA Zone 2 | 4 |
| Sheridan County | 3.0 pCi/L | 1.8 | Moderate | EPA Zone 2 | 5 |
| Scotts Bluff County | 3.0 pCi/L | 1.9 | Moderate | EPA Zone 2 | 3 |
| Garfield County | 2.9 pCi/L | 1.5 | Moderate | EPA Zone 3 | 1 |
| Perkins County | 2.9 pCi/L | 1.7 | Moderate | EPA Zone 2 | 4 |
| Sherman County | 2.9 pCi/L | 1.7 | Moderate | EPA Zone 2 | 5 |
| Banner County | 2.9 pCi/L | 1.7 | Moderate | EPA Zone 2 | 1 |
| Dawson County | 2.8 pCi/L | 1.6 | Moderate | EPA Zone 2 | 6 |
| Brown County | 2.8 pCi/L | 1.5 | Moderate | EPA Zone 3 | 3 |
| Morrill County | 2.8 pCi/L | 1.5 | Moderate | EPA Zone 2 | 4 |
| Kimball County | 2.7 pCi/L | 1.6 | Moderate | EPA Zone 2 | 3 |
| Merrick County | 2.7 pCi/L | 1.4 | Moderate | EPA Zone 2 | 6 |
| Logan County | 2.7 pCi/L | 1.4 | Moderate | EPA Zone 3 | 1 |
| Garden County | 2.7 pCi/L | 1.6 | Moderate | EPA Zone 3 | 3 |
| Hall County | 2.6 pCi/L | 1.5 | Moderate | EPA Zone 2 | 6 |
| Box Butte County | 2.6 pCi/L | 1.5 | Moderate | EPA Zone 2 | 2 |
| Holt County | 2.6 pCi/L | 1.3 | Moderate | EPA Zone 3 | 9 |
| Keya Paha County | 2.6 pCi/L | 1.5 | Moderate | EPA Zone 2 | 2 |
| Deuel County | 2.6 pCi/L | 1.5 | Moderate | EPA Zone 2 | 2 |
| Arthur County | 2.5 pCi/L | 1.3 | Moderate | EPA Zone 3 | 1 |
| Cherry County | 2.5 pCi/L | 1.3 | Moderate | EPA Zone 3 | 9 |
| Thomas County | 2.4 pCi/L | 1.2 | Moderate | EPA Zone 3 | 2 |
| Blaine County | 2.4 pCi/L | 1.1 | Moderate | EPA Zone 3 | 3 |
| Lincoln County | 2.4 pCi/L | 1.6 | Moderate | EPA Zone 3 | 9 |
| Rock County | 2.4 pCi/L | 1.2 | Moderate | EPA Zone 3 | 2 |
| Wheeler County | 2.4 pCi/L | 1.1 | Moderate | EPA Zone 3 | 2 |
| Grant County | 2.4 pCi/L | 1.3 | Moderate | EPA Zone 3 | 2 |
| McPherson County | 2.3 pCi/L | 1.2 | Moderate | EPA Zone 3 | 1 |
| Loup County | 2.3 pCi/L | 1.1 | Moderate | EPA Zone 3 | 1 |
| Hooker County | 2.3 pCi/L | 1.1 | Moderate | EPA Zone 3 | 1 |
Nebraska radon questions
- Is radon high in Nebraska?
- Nebraska's population-weighted predicted basement average is 3.6 pCi/L, about 2.0× the US average of 1.8. 42 of its 93 modeled counties are predicted at or above the EPA action level of 4 pCi/L, 51 are in the 2-4 "consider fixing" range and 0 are below 2. 50.1% of Nebraska ZIP codes are predicted at 4 or higher.
- Which Nebraska county has the highest radon?
- Burt County has the highest predicted basement average in Nebraska at 5.7 pCi/L (EPA Zone 1). The lowest is Hooker County at 2.3 pCi/L. These are modeled area averages; individual homes in any county can test far higher.
- How many EPA Zone 1 counties are in Nebraska?
- 53 of Nebraska's 93 counties (57%) are EPA Zone 1 (highest potential), 24 are Zone 2 and 16 are Zone 3. The EPA zone map dates from 1993; the predicted values on this page come from a 2001-2021 model built on millions of actual tests, so the two can disagree for a given county.
- Should I test for radon in Nebraska?
- Yes - with some urgency. Nebraska's predicted average is in the moderate range, and 99.8% of its ZIP codes are predicted at 2 pCi/L or higher. A short-term charcoal kit or a continuous digital monitor will tell you your actual level within days.
Nebraska radon program
Many states offer free or discounted test kits and keep lists of certified mitigators. Find the Nebraska radon office through the EPA state radon contacts page. Then read how to test and what mitigation costs.