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Radon Levels in Woodson County, Kansas

EPA puts Woodson County in Zone 2, its middle radon zone, and only 1 radon test from it is 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

    38.0%

    Lyon County, 45 miles

    Lyon
    38.0%
    Kansas
    33.7%

    Share at 4+ pCi/L, 50 tests, 2019

  • Ground above low

    100.0%

    Level with Kansas

    Woodson
    100.0%
    Kansas
    100.0%

    Share of land USGS rates moderate or high potential

  • Tests reported

    2

    Too few for a share

    Woodson
    2
    Needed
    30

    2020

  • EPA radon zone

    Zone 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

Read a result for Woodson County

Starts at EPA's action level

4.0pCi/L

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

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 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

Woodson County, At a glance

Woodson County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Woodson County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

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 Woodson County, 2022

Share of reported tests at or above 4 pCi/L, by year, Woodson County
Share of reported tests at or above 4 pCi/L, by year, Woodson County
YearShare of reported tests at or above 4 pCi/L
20160.0%
20190.0%
20200.0%
20220.0%

2022: 0.0%. Across these years the share ran from 0.0% to 0.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 1 test was reported to CDC for Woodson 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: 2016 to 2022 (every CDC figure on file).

How to read these figures

Woodson County, Compared

Woodson County radon figures, compared

Calculated by Radon411

CDC's largest figure for Woodson County rests on 2 tests in 2020, 0 of them at or above 4 pCi/L, so each test moves its share by 50.0 points and no rank or comparison is drawn from it. Results reached as high as 3.4 pCi/L, with a middle value of 2.0 pCi/L.

The nearest counties with a figure are Lyon County (45 miles away) at 38.0%, Osage County (53 miles away) at 31.0% and Franklin County (53 miles away) at 21.2%. 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 Woodson 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.

Kansas, the United States and the counties around Woodson County, 2019
AreaTestsAt or above 4 pCi/LMedian
Kansas, pooled102 counties, pooled24,17633.7%Not pooled
United States, pooled828 counties, pooled391,41229.0%Not pooled
Jewell Countyhighest in the state3271.9%7.4 pCi/L
Reno Countylowest in the state30320.8%2.0 pCi/L
Anderson County, KSborders it2250.0%3.7 pCi/L
Neosho County, KSborders it1241.7%2.0 pCi/L
Greenwood County, KSborders it616.7%2.1 pCi/L
Coffey County, KSborders it1216.7%2.1 pCi/L
Allen County, KSborders it714.3%0.6 pCi/L
The nearest Kansas counties to Woodson County with 30 or more tests, 2019
CountyDistanceTestsAt or above 4 pCi/LMedian
Lyon County45 mi5038.0%2.7 pCi/L
Osage County53 mi4231.0%2.5 pCi/L
Franklin County53 mi11321.2%1.2 pCi/L
Crawford County55 mi5026.0%2.1 pCi/L
Butler County61 mi51127.8%2.3 pCi/L
Miami County68 mi32635.0%2.6 pCi/L
Douglas County73 mi1,13623.6%1.7 pCi/L
Cowley County75 mi10141.6%3.2 pCi/L
Woodson County radon tests by year, against Kansas' pooled share
YearTestsAt or above 4 pCi/LMedianHighestKansas, pooledChange from the row before
202210.0%1.4 pCi/L1.4 pCi/L32.0%Level
202020.0%2.0 pCi/L3.4 pCi/L31.3%Level
201920.0%2.4 pCi/L2.7 pCi/L33.7%Level
201610.0%1.3 pCi/L1.3 pCi/L35.4%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Woodson County, Geology

The ground under Woodson County

Predicted

USGS's geologic map puts all of Woodson 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).

USGS's geologic areas under Woodson County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Glaciated AreaGlacial till underlain by Pennsylvanian and Permian marine and nonmarine sedimentary shale, sandstone, limestone, coal.Moderate9100%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Woodson County beside the ground around it

Across Kansas 59.9% of the land is rated high; none of Woodson 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%.

Share of land by USGS radon potential: Woodson County, the 6 counties bordering it and Kansas
AreaEPA zoneLow potentialModerate potentialHigh potential
Woodson CountyZone 2None100%None
Coffey CountyZone 2None100%None
Allen CountyZone 2None100%None
Wilson CountyZone 2None100%None
Greenwood CountyZone 2None100%None
Anderson CountyZone 2None100%None
Neosho CountyZone 2None100%None
Kansas105 counties, pooled by land areaVariesNone40.1%59.9%

The map rates the ground, not the air in any home.

What it means

Woodson County, Questions

Questions about radon in Woodson County

Are radon levels high in Woodson County?

In 2022, 0.0% of the radon tests reported to CDC for Woodson County, Kansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.4 pCi/L. Of the 8 nearest counties with a figure, within 75 miles, the share of tests at or above 4 pCi/L runs from 21.2% to 41.6%.

Which counties border Woodson County?

Woodson County borders 6 counties: Coffey County, Allen County, Wilson County, Greenwood County, Anderson County and Neosho County.

Products

Woodson County, Products

Testing a home in Woodson County

No CDC figure names Woodson County; the nearest county with one, Lyon County (45 miles away), reported 38.0% 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 Woodson County; a long-term test tells the year-round average.

Explore

Woodson County, Bordering counties

Counties bordering Woodson County

Calculated by Radon411

Woodson County, Cities and towns

Cities and towns in Woodson County

The Census Bureau estimates 3,118 residents in Woodson County for July 1, 2025, 23 more than in 2020 (+0.7%). Spread over its land, that is 6.3 people to the square mile. Its largest town, Yates Center, has 1,308 residents, 41.9% of the total. Together its 3 incorporated places hold 53.0% of those residents; the other 47.0% live outside any of them. Reported testing is thin here: 2 tests over 2020, or 0.6 for every 1,000 residents (2025 estimate), where Kansas as a whole comes to 7.7.

From Yates Center to Neosho Falls, CDC publishes no figure by town: each reads Woodson County's.

The cities and towns in Woodson County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Yates Center1,308−2.5%41.9%
Toronto207+1.0%6.6%
Neosho Falls139+4.5%4.5%

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).

Woodson County, Homes

Homes in Woodson County

Woodson County is a place of houses on their own lots: 82% of its 1,842 homes are detached single-family houses, against 72% across Kansas. The homes are older than Kansas' as a whole: half were built before 1960 (1975 for Kansas), and 50% date from before 1960. Owners live in 84% of the occupied homes (Kansas: 67%), so for most households a test and a fix are their own to order.

Homes in Woodson County, Kansas, 2019 to 2023
HomesWoodson CountyKansas
Housing units1,8421,285,221
Detached houses82%72%
In buildings of 5 or more3%13%
Mobile homes10%4%
Built before 196050%33%
Built since 200011%20%
Middle year built19601975
Owner-occupied84%67%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.