Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Wilson County, Kansas
EPA puts Wilson County in Zone 2, its middle radon zone, and only 8 radon tests from it are on file with CDC (2022). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Nearest county
26.0%
Crawford County, 49 miles
- Crawford
- 26.0%
- Kansas
- 33.7%
Share at 4+ pCi/L, 50 tests, 2019
Ground above low
100.0%
Level with Kansas
- Wilson
- 100.0%
- Kansas
- 100.0%
Share of land USGS rates moderate or high potential
Tests reported
8
Too few for a share
- Wilson
- 8
- Needed
- 30
2022
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Wilson County
Starts at EPA's action level
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.0 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.
The data
Wilson County, At a glance
Wilson County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Wilson 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
Radon tests reported for Wilson County, 2022
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2017 | 66.7% |
| 2018 | 20.0% |
| 2020 | 50.0% |
| 2021 | 100.0% |
| 2022 | 25.0% |
2022: 25.0%. 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 8 tests were reported to CDC for Wilson County over 2022, 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: 2022. Measured data period: 2017 to 2022 (every CDC figure on file).
Wilson County, Compared
Wilson County radon figures, compared
Calculated by Radon411CDC's largest figure for Wilson County rests on 8 tests in 2022, 2 of them at or above 4 pCi/L, so each test moves its share by 12.5 points and no rank or comparison is drawn from it. Results reached as high as 11.1 pCi/L, with a middle value of 1.9 pCi/L.
The nearest counties with a figure are Crawford County (49 miles away) at 26.0%, Butler County (62 miles away) at 27.8% and Cowley County (64 miles away) at 41.6%. Pooled across 102 Kansas counties, 33.7% of reported tests reached that level; across every county in the country with a figure, 29.0%.
Statewide for the same period, Jewell County reported the highest share (71.9%) and Reno County the lowest (20.8%). EPA's 1993 map puts Wilson County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Wilson County, Geology
The ground under Wilson County
PredictedUSGS's geologic map puts all of Wilson County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Glaciated Area, to which USGS gives a radon index of 9, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Glaciated Area | Glacial till underlain by Pennsylvanian and Permian marine and nonmarine sedimentary shale, sandstone, limestone, coal. | Moderate | 9 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Wilson County beside the ground around it
Across Kansas 59.9% of the land is rated high; none of Wilson County's is. Of the 6 counties that border it, none has as large a share of moderate-potential ground; Allen County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Wilson County, Local resources
Radon testing and mitigation in Wilson County
- Kansas Radon ProgramKansas Radon Program answers questions about testing, mitigation and the rules in Kansas.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- Professionals in Kansas178 professionals are listed in Kansas.
What Kansas's program says
- Phone
- (800) 693-5343
What it means
Wilson County, Questions
Questions about radon in Wilson County
Are radon levels high in Wilson County?
In 2022, 25.0% of the radon tests reported to CDC for Wilson County, Kansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.9 pCi/L. Of the 8 nearest counties with a figure, within 92 miles, the share of tests at or above 4 pCi/L runs from 21.2% to 41.6%.
Which counties border Wilson County?
Wilson County borders 6 counties: Neosho County, Montgomery County, Woodson County, Elk County, Greenwood County and Allen County.
Products
Wilson County, Products
Testing a home in Wilson County
No CDC figure names Wilson County; the nearest county with one, Crawford County (49 miles away), reported 26.0% of its tests at or above 4 pCi/L in 2019, the only reading nearby until a test of this home. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Wilson 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
Hello Radon C battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Wilson County, Bordering counties
Counties bordering Wilson County
Calculated by Radon411- Radon levels in Elk CountyEPA zone 2
50.0%at or above 4 pCi/L
Median 7.2 pCi/L · 2 tests
- Radon levels in Neosho CountyEPA zone 2
41.7%at or above 4 pCi/L
Median 2.0 pCi/L · 12 tests
- Radon levels in Greenwood CountyEPA zone 2
16.7%at or above 4 pCi/L
Median 2.1 pCi/L · 6 tests
- Radon levels in Allen CountyEPA zone 2
14.3%at or above 4 pCi/L
Median 0.6 pCi/L · 7 tests
- Radon levels in Montgomery CountyEPA zone 2
0.0%at or above 4 pCi/L
Median 0.8 pCi/L · 8 tests
- Radon levels in Woodson CountyEPA zone 2
0.0%at or above 4 pCi/L
Median 2.4 pCi/L · 2 tests
Wilson County, Cities and towns
Cities and towns in Wilson County
About 8,299 people live in Wilson County by the Census Bureau's estimate for July 1, 2025, 282 fewer than in 2020 (−3.3%). That works out to 15 people per square mile of land. Its largest town, Neodesha, has 2,188 residents, 26.4% of the total. Together its 7 incorporated places hold 59.8% of those residents; the other 40.2% live outside any of them. Reported testing is thin here: 8 tests over 2022, or 1.0 for every 1,000 residents (2025 estimate), where Kansas as a whole comes to 6.2.
From Neodesha to New Albany, CDC publishes no figure by town: each reads Wilson County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Neodesha | 2,188 | −3.3% | 26.4% |
| Fredonia | 2,041 | −4.7% | 24.6% |
| Altoona | 338 | −2.6% | 4.1% |
| Buffalo | 209 | −2.8% | 2.5% |
| Benedict | 71 | −2.7% | 0.9% |
| Coyville | 57 | −1.7% | 0.7% |
| New Albany | 55 | −1.8% | 0.7% |
7 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).
Wilson County, Homes
Homes in Wilson County
Wilson County is a place of houses on their own lots: 83% of its 4,492 homes are detached single-family houses, against 72% across Kansas. Half of its homes were built before 1971, close to Kansas' 1975: 42% date from before 1960 and 12% from 2000 or later. 74% of occupied homes are lived in by their owner (Kansas: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Wilson County | Kansas |
|---|---|---|
| Housing units | 4,492 | 1,285,221 |
| Detached houses | 83% | 72% |
| In buildings of 5 or more | 3% | 13% |
| Mobile homes | 11% | 4% |
| Built before 1960 | 42% | 33% |
| Built since 2000 | 12% | 20% |
| Middle year built | 1971 | 1975 |
| Owner-occupied | 74% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.