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Radon Levels in Stanton County, Kansas

EPA puts Stanton County in Zone 1, its highest radon zone, and only 2 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

    52.2%

    Seward County, 57 miles

    Seward
    52.2%
    Kansas
    33.7%

    Share at 4+ pCi/L, 92 tests, 2019

  • Ground above low

    100.0%

    Level with Kansas

    Stanton
    100.0%
    Kansas
    100.0%

    Share of land USGS rates moderate or high potential

  • Tests reported

    3

    Too few for a share

    Stanton
    3
    Needed
    30

    2021

  • EPA radon zone

    Zone 1

    Highest potential

    1. Zone 1
    2. 2
    3. 3

    1 highest, 3 lowest

    EPA predicts over 4 pCi/L indoors

Read a result for Stanton 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

Stanton County, At a glance

Stanton County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Stanton County in and predicts an average indoor of greater than 4 pCi/L (greater than 150 Bq/m³) across the county. That is one forecast for the whole county, not a reading of any address in it; homes above EPA's turn up in all three zones.

USGS geologic potential: High across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Stanton County, 2022

Share of reported tests at or above 4 pCi/L, by year, Stanton County
Share of reported tests at or above 4 pCi/L, by year, Stanton County
YearShare of reported tests at or above 4 pCi/L
201650.0%
20180.0%
20190.0%
202050.0%
2021100.0%
20220.0%

2022: 0.0%. Across these years the share ran from 0.0% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 2 tests were reported to CDC for Stanton 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

Stanton County, Compared

Stanton County radon figures, compared

Calculated by Radon411

CDC's largest figure for Stanton County rests on 3 tests in 2021, 3 of them at or above 4 pCi/L, so each test moves its share by 33.3 points and no rank or comparison is drawn from it. Results reached as high as 4.7 pCi/L, with a middle value of 4.7 pCi/L.

The nearest counties with a figure are Seward County (57 miles away) at 52.2%, Finney County (66 miles away) at 30.1% and Scott County (79 miles away) at 61.5%. 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 Stanton County in Zone 1, the map's highest label: a predicted county average above 4 pCi/L. USGS geology rates 100% of the county's land high radon potential.

Kansas, the United States and the counties around Stanton 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
Prowers County, COborders it1675.0%5.8 pCi/L
Baca County, COborders it366.7%5.2 pCi/L
Kearny County, KSborders it862.5%5.5 pCi/L
Grant County, KSborders it1855.6%4.2 pCi/L
Stevens County, KSborders it2536.0%2.6 pCi/L
Hamilton County, KSborders it20.0%3.1 pCi/L
Morton County, KSborders it40.0%1.6 pCi/L
The nearest Kansas counties to Stanton County with 30 or more tests, 2019
CountyDistanceTestsAt or above 4 pCi/LMedian
Seward County57 mi9252.2%4.0 pCi/L
Finney County66 mi15630.1%3.0 pCi/L
Scott County79 mi3961.5%6.1 pCi/L
Ford County104 mi16542.4%3.3 pCi/L
Sherman County123 mi6358.7%4.6 pCi/L
Thomas County129 mi4445.5%3.8 pCi/L
Pawnee County146 mi3366.7%4.9 pCi/L
Ellis County163 mi20941.6%3.3 pCi/L
Stanton County radon tests by year, against Kansas' pooled share
YearTestsAt or above 4 pCi/LMedianHighestKansas, pooledChange from the row before
202220.0%2.3 pCi/L3.7 pCi/L32.0%−100.0 points
20213100.0%4.7 pCi/L4.7 pCi/L31.8%+50.0 points
2020250.0%3.8 pCi/L4.0 pCi/L31.3%+50.0 points
201910.0%3.9 pCi/L3.9 pCi/L33.7%Level
201810.0%1.6 pCi/L1.6 pCi/L37.3%−50.0 points
2016250.0%4.0 pCi/L4.0 pCi/L35.4%First on file

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

Stanton County, Geology

The ground under Stanton County

Predicted

USGS's geologic map puts all of Stanton County's mapped land in one class: high radon potential. All of it lies in the area the map calls Ogallala Formation, to which USGS gives a radon index of 12, in the high band (12 to 17).

USGS's geologic areas under Stanton County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Ogallala FormationTertiary sandstone, in part covered by windblown eolian sand and loess deposits.High12100%

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

Stanton County beside the ground around it

Stanton County has more high-potential ground than Kansas as a whole: 100% of its land against 59.9%. Of the 7 counties that border it, none has as large a share of high-potential ground; Prowers County, CO comes nearest at 98.1%.

Share of land by USGS radon potential: Stanton County, the 7 counties bordering it and Kansas
AreaEPA zoneLow potentialModerate potentialHigh potential
Stanton CountyZone 1NoneNone100%
Morton CountyZone 2None63.3%36.7%
Grant CountyZone 1None19.2%80.8%
Stevens CountyZone 2None99.9%0.1%
Hamilton CountyZone 1None16.4%83.6%
Kearny CountyZone 1None31.3%68.7%
Baca County, COZone 1None2.2%97.8%
Prowers County, COZone 1None1.9%98.1%
Kansas105 counties, pooled by land areaVariesNone40.1%59.9%

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

What it means

Stanton County, Questions

Questions about radon in Stanton County

Are radon levels high in Stanton County?

In 2022, 0.0% of the radon tests reported to CDC for Stanton County, Kansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.3 pCi/L. Of the 8 nearest counties with a figure, within 163 miles, the share of tests at or above 4 pCi/L runs from 30.1% to 66.7%.

Which counties border Stanton County?

Stanton County borders 7 counties: Morton County, KS, Grant County, KS, Stevens County, KS, Hamilton County, KS, Kearny County, KS, Baca County, CO and Prowers County, CO.

Products

Stanton County, Products

Testing a home in Stanton County

No CDC figure names Stanton County; the nearest county with one, Seward County (57 miles away), reported 52.2% of its tests at or above 4 pCi/L in 2019, the only reading nearby until a test of this home. In Zone 1 the year-round level in Stanton County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.

Test kits and monitors3

See every kit and monitor

Stanton County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Stanton County

Explore

Stanton County, Bordering counties

Counties bordering Stanton County

Calculated by Radon411

Stanton County, Cities and towns

Cities and towns in Stanton County

About 1,986 people live in Stanton County by the Census Bureau's estimate for July 1, 2025, 93 fewer than in 2020 (−4.5%). Spread over its land, that is 2.9 people to the square mile. Johnson City alone is home to 1,402 of them, 70.6% of the total. Together its 2 incorporated places hold 76.9% of those residents; the other 23.1% live outside any of them. Reported testing is thin here: 3 tests over 2021, or 1.5 for every 1,000 residents (2025 estimate), where Kansas as a whole comes to 23.5.

From Johnson City to Manter, CDC publishes no figure by town: each reads Stanton County's.

The cities and towns in Stanton County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Johnson City1,402−4.3%70.6%
Manter125−3.8%6.3%

2 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).

Stanton County, Homes

Homes in Stanton County

Of Stanton County's 1,014 homes, 68% are detached houses, against 72% across Kansas; 31% are mobile homes. The homes are older than Kansas' as a whole: half were built before 1967 (1975 for Kansas), and 34% date from before 1960. Owners live in 81% of the occupied homes (Kansas: 67%), so for most households a test and a fix are their own to order.

Homes in Stanton County, Kansas, 2019 to 2023
HomesStanton CountyKansas
Housing units1,0141,285,221
Detached houses68%72%
In buildings of 5 or moreunder 1%13%
Mobile homes31%4%
Built before 196034%33%
Built since 200011%20%
Middle year built19671975
Owner-occupied81%67%

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