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Radon Levels in Neosho County, Kansas

EPA puts Neosho County in Zone 2, its middle radon zone, and only 5 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

  • Highest bordering

    26.0%

    Crawford County

    Crawford
    26.0%

    1 of 7 neighbours have 30+ tests, 2019

  • Nearest county

    26.0%

    Crawford County, 25 miles

    Crawford
    26.0%
    Kansas
    33.7%

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

  • Ground above low

    100.0%

    Level with Kansas

    Neosho
    100.0%
    Kansas
    100.0%

    Share of land USGS rates moderate or high potential

  • Tests reported

    22

    Too few for a share

    Neosho
    22
    Needed
    30

    2016

  • 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 Neosho 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

Neosho County, At a glance

Neosho County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Neosho 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 Neosho County, 2022

Share of reported tests at or above 4 pCi/L, by year, Neosho County
Share of reported tests at or above 4 pCi/L, by year, Neosho County
YearShare of reported tests at or above 4 pCi/L
201627.3%
20170.0%
201827.3%
201941.7%
202037.5%
20210.0%
202220.0%

2022: 20.0%. Across these years the share ran from 0.0% to 41.7%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 5 tests were reported to CDC for Neosho 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

Neosho County, Compared

Neosho County radon figures, compared

Calculated by Radon411

CDC's largest figure for Neosho County rests on 22 tests in 2016, 6 of them at or above 4 pCi/L, so each test moves its share by 4.5 points and no rank or comparison is drawn from it. Results reached as high as 12.5 pCi/L, with a middle value of 1.9 pCi/L.

Crawford County, the one bordering county with a figure in 2019, reported 26.0% of its tests at or above 4 pCi/L. Farther out, Franklin County (69 miles away) at 21.2%, Miami County (74 miles away) at 35.0% and Lyon County (77 miles away) at 38.0% have figures too. 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 Neosho 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 Neosho 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
Bourbon County, KSborders it2147.6%3.5 pCi/L
Crawford County, KSborders it5026.0%2.1 pCi/L
Allen County, KSborders it714.3%0.6 pCi/L
Labette County, KSborders it1612.5%1.3 pCi/L
Woodson County, KSborders it20.0%2.4 pCi/L
Montgomery County, KSborders it80.0%0.8 pCi/L
The nearest Kansas counties to Neosho County with 30 or more tests, 2019
CountyDistanceTestsAt or above 4 pCi/LMedian
Crawford County25 mi5026.0%2.1 pCi/L
Franklin County69 mi11321.2%1.2 pCi/L
Miami County74 mi32635.0%2.6 pCi/L
Lyon County77 mi5038.0%2.7 pCi/L
Osage County79 mi4231.0%2.5 pCi/L
Butler County85 mi51127.8%2.3 pCi/L
Cowley County87 mi10141.6%3.2 pCi/L
Douglas County91 mi1,13623.6%1.7 pCi/L
Neosho County radon tests by year, against Kansas' pooled share
YearTestsAt or above 4 pCi/LMedianHighestKansas, pooledChange from the row before
2022520.0%3.0 pCi/L6.3 pCi/L32.0%+20.0 points
2021210.0%1.6 pCi/L2.2 pCi/L31.8%−37.5 points
2020837.5%2.8 pCi/L17.5 pCi/L31.3%−4.2 points
20191241.7%2.0 pCi/L17.0 pCi/L33.7%+14.4 points
20181127.3%2.6 pCi/L8.2 pCi/L37.3%+27.3 points
201750.0%1.4 pCi/L2.3 pCi/L37.3%−27.3 points
20162227.3%1.9 pCi/L12.5 pCi/L35.4%First on file

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

Neosho County, Geology

The ground under Neosho County

Predicted

USGS's geologic map puts all of Neosho 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 Neosho 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.

Neosho County beside the ground around it

Across Kansas 59.9% of the land is rated high; none of Neosho County's is. Of the 7 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: Neosho County, the 7 counties bordering it and Kansas
AreaEPA zoneLow potentialModerate potentialHigh potential
Neosho CountyZone 2None100%None
Wilson CountyZone 2None100%None
Crawford CountyZone 2None100%None
Labette CountyZone 20.2%99.8%None
Allen CountyZone 2None100%None
Woodson CountyZone 2None100%None
Montgomery CountyZone 20.3%99.7%None
Bourbon 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

Neosho County, Questions

Questions about radon in Neosho County

Are radon levels high in Neosho County?

In 2022, 20.0% of the radon tests reported to CDC for Neosho County, Kansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.0 pCi/L. Crawford County, the one bordering county with a figure in 2019, reported 26.0% of its tests at or above 4 pCi/L.

Which counties border Neosho County?

Neosho County borders 7 counties: Wilson County, Crawford County, Labette County, Allen County, Woodson County, Montgomery County and Bourbon County.

Products

Neosho County, Products

Testing a home in Neosho County

No CDC figure names Neosho County; the nearest county with one, Crawford County (25 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 Neosho County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Neosho County homes, compared

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Neosho County, Bordering counties

Counties bordering Neosho County

Calculated by Radon411

Neosho County, Cities and towns

Cities and towns in Neosho County

About 15,637 people live in Neosho County by the Census Bureau's estimate for July 1, 2025, 279 fewer than in 2020 (−1.8%). That works out to 27 people per square mile of land. Chanute alone is home to 8,584 of them, 54.9% of the total. Together its 7 incorporated places hold 70.0% of those residents; the other 30.0% live outside any of them. Reported testing is thin here: 22 tests over 2016, or 1.4 for every 1,000 residents (2025 estimate), where Kansas as a whole comes to 5.8.

From Chanute to Earlton, CDC publishes no figure by town: each reads Neosho County's.

The cities and towns in Neosho County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Chanute8,584−1.8%54.9%
Erie1,034−1.6%6.6%
St. Paul626+1.5%4.0%
Thayer427−2.3%2.7%
Galesburg143−2.1%0.9%
Stark68−1.4%0.4%
Earlton60+1.7%0.4%

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).

Neosho County, Homes

Homes in Neosho County

Neosho County is a place of houses on their own lots: 84% of its 7,227 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 77% of the occupied homes (Kansas: 67%), so for most households a test and a fix are their own to order.

Homes in Neosho County, Kansas, 2019 to 2023
HomesNeosho CountyKansas
Housing units7,2271,285,221
Detached houses84%72%
In buildings of 5 or more5%13%
Mobile homes7%4%
Built before 196050%33%
Built since 200013%20%
Middle year built19601975
Owner-occupied77%67%

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