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Radon Levels in Rawlins County, Kansas

EPA puts Rawlins County in Zone 1, its highest 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

    64.2%

    Red Willow County

    Red Willow
    64.2%
    Thomas
    45.5%

    4 of 7 neighbours have 30+ tests, 2019

  • Nearest county

    45.5%

    Thomas County, 30 miles

    Thomas
    45.5%
    Kansas
    33.7%

    Share at 4+ pCi/L, 44 tests, 2019

  • Ground above low

    100.0%

    Level with Kansas

    Rawlins
    100.0%
    Kansas
    100.0%

    Share of land USGS rates moderate or high potential

  • Tests reported

    18

    Too few for a share

    Rawlins
    18
    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 Rawlins 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

Rawlins County, At a glance

Rawlins County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Rawlins 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 Rawlins County, 2022

Share of reported tests at or above 4 pCi/L, by year, Rawlins County
Share of reported tests at or above 4 pCi/L, by year, Rawlins County
YearShare of reported tests at or above 4 pCi/L
201666.7%
201771.4%
2018100.0%
201925.0%
2020100.0%
202150.0%
202280.0%

2022: 80.0%. Across these years the share ran from 25.0% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 5 tests were reported to CDC for Rawlins 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

Rawlins County, Compared

Rawlins County radon figures, compared

Calculated by Radon411

CDC's largest figure for Rawlins County rests on 18 tests in 2021, 9 of them at or above 4 pCi/L, so each test moves its share by 5.6 points and no rank or comparison is drawn from it. Results reached as high as 12.3 pCi/L, with a middle value of 3.8 pCi/L.

Of the counties bordering it, 4 have a figure in 2019: Red Willow County, NE reported the largest share at or above 4 pCi/L, 64.2%, and Thomas County the smallest, 45.5%, with Sherman County at 58.7% and Hitchcock County, NE at 46.2% between. Farther out, Scott County (90 miles away) at 61.5%, Phillips County (92 miles away) at 71.4% and Ellis County (112 miles away) at 41.6% 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 Rawlins 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 Rawlins 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
Decatur County, KSborders it966.7%5.0 pCi/L
Red Willow County, NEborders it15964.2%4.9 pCi/L
Sherman County, KSborders it6358.7%4.6 pCi/L
Hitchcock County, NEborders it3946.2%3.4 pCi/L
Thomas County, KSborders it4445.5%3.8 pCi/L
Cheyenne County, KSborders it1225.0%2.5 pCi/L
Dundy County, NEborders it2412.5%1.4 pCi/L
The nearest Kansas counties to Rawlins County with 30 or more tests, 2019
CountyDistanceTestsAt or above 4 pCi/LMedian
Thomas County30 mi4445.5%3.8 pCi/L
Sherman County46 mi6358.7%4.6 pCi/L
Scott County90 mi3961.5%6.1 pCi/L
Phillips County92 mi3571.4%6.0 pCi/L
Ellis County112 mi20941.6%3.3 pCi/L
Finney County121 mi15630.1%3.0 pCi/L
Pawnee County148 mi3366.7%4.9 pCi/L
Jewell County152 mi3271.9%7.4 pCi/L
Rawlins County radon tests by year, against Kansas' pooled share
YearTestsAt or above 4 pCi/LMedianHighestKansas, pooledChange from the row before
2022580.0%9.3 pCi/L15.8 pCi/L32.0%+30.0 points
20211850.0%3.8 pCi/L12.3 pCi/L31.8%−50.0 points
20202100.0%6.1 pCi/L6.3 pCi/L31.3%+75.0 points
2019425.0%3.5 pCi/L11.3 pCi/L33.7%−75.0 points
20186100.0%7.7 pCi/L15.5 pCi/L37.3%+28.6 points
2017771.4%7.2 pCi/L8.5 pCi/L37.3%+4.7 points
20161866.7%5.4 pCi/L10.3 pCi/L35.4%First on file

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

Rawlins County, Geology

The ground under Rawlins County

Predicted

USGS's geologic map puts all of Rawlins 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 Rawlins 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.

Rawlins County beside the ground around it

Rawlins 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; Decatur County comes nearest at 100%.

Share of land by USGS radon potential: Rawlins County, the 7 counties bordering it and Kansas
AreaEPA zoneLow potentialModerate potentialHigh potential
Rawlins CountyZone 1NoneNone100%
Thomas CountyZone 1NoneNone100%
Decatur CountyZone 1NoneNone100%
Hitchcock County, NEZone 1NoneNone100%
Cheyenne CountyZone 1None3.6%96.4%
Sherman CountyZone 1NoneNone100%
Dundy County, NEZone 2None66.2%33.8%
Red Willow County, NEZone 1NoneNone100%
Kansas105 counties, pooled by land areaVariesNone40.1%59.9%

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

What it means

Rawlins County, Questions

Questions about radon in Rawlins County

Are radon levels high in Rawlins County?

In 2022, 80.0% of the radon tests reported to CDC for Rawlins County, Kansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 9.3 pCi/L. Of the counties bordering it, 4 have a figure in 2019: Red Willow County, NE reported the largest share at or above 4 pCi/L, 64.2%, and Thomas County the smallest, 45.5%, with Sherman County at 58.7% and Hitchcock County, NE at 46.2% between.

Which counties border Rawlins County?

Rawlins County borders 7 counties: Thomas County, KS, Decatur County, KS, Hitchcock County, NE, Cheyenne County, KS, Sherman County, KS, Dundy County, NE and Red Willow County, NE.

Products

Rawlins County, Products

Testing a home in Rawlins County

No CDC figure names Rawlins County; the nearest county with one, Thomas County (30 miles away), reported 45.5% 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 Rawlins 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

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

Explore

Rawlins County, Bordering counties

Counties bordering Rawlins County

Calculated by Radon411

Rawlins County, Cities and towns

Cities and towns in Rawlins County

Rawlins County has been losing residents: from 2,567 in 2020 to 2,431 on July 1, 2025, a fall of 5.3% by the Census Bureau's estimates. Spread over its land, that is 2.3 people to the square mile. Atwood alone is home to 1,229 of them, 50.6% of the total. Together its 3 incorporated places hold 60.0% of those residents; the other 40.0% live outside any of them. Reported testing is thin here: 18 tests over 2021, or 7.4 for every 1,000 residents (2025 estimate), where Kansas as a whole comes to 23.5.

From Atwood to Herndon, CDC publishes no figure by town: each reads Rawlins County's.

The cities and towns in Rawlins County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Atwood1,229−4.7%50.6%
McDonald115−1.7%4.7%
Herndon114−6.6%4.7%

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).

Rawlins County, Homes

Homes in Rawlins County

Rawlins County is a place of houses on their own lots: 79% of its 1,363 homes are detached single-family houses, against 72% across Kansas. The homes are older than Kansas' as a whole: half were built before 1956 (1975 for Kansas), and 55% date from before 1960. 69% 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 in Rawlins County, Kansas, 2019 to 2023
HomesRawlins CountyKansas
Housing units1,3631,285,221
Detached houses79%72%
In buildings of 5 or more1%13%
Mobile homes15%4%
Built before 196055%33%
Built since 20004%20%
Middle year built19561975
Owner-occupied69%67%

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