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Radon Levels in Dickinson County, Kansas

EPA puts Dickinson County in Zone 1, its highest radon zone, and 38.9% of its 113 reported radon tests (2022) were at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

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  • Share at 4+ pCi/L

    38.9%

    6.9 pts above KS

    Dickinson
    38.9%
    Kansas
    32.0%

    113 tests, 2022

  • Median result

    2.7pCi/L

    Below action level

    Dickinson
    2.7 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2022

  • Tests reported

    113

    18th of 38 by tests

    Dickinson
    113
    Johnson
    5,240

    Reported to CDC before any fix, 2022

  • 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

  • Rank in Kansas

    15 of 38

    Middle half

    Dickinson
    38.9%
    Mitchell
    57.4%

    By share, of 38 with 30+ tests

Read a result for Dickinson County

Starts at Dickinson County's median, 2.7 pCi/L

2.7pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 2.7 pCi/L

Between 2 and 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 between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Dickinson County's median reported result, 2022.

Interpret this readingWhat a fix costs

The data

Dickinson County, At a glance

Dickinson County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Dickinson 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 Dickinson County, 2022

Share of reported tests at or above 4 pCi/L, by year, Dickinson County
Share of reported tests at or above 4 pCi/L, by year, Dickinson County
YearShare of reported tests at or above 4 pCi/L
201649.4%
201736.7%
201842.1%
201930.8%
202036.7%
202137.3%
202238.9%

2022: 38.9%. Across these years the share ran from 30.8% to 49.4%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

These are the 113 tests reported to CDC for Dickinson County over 2022, many from homes being sold or already suspected of a problem: they describe the county's reported tests, not 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

Dickinson County, Compared

Dickinson County radon figures, compared

Calculated by Radon411

In Dickinson County, about 4 in 10 reported tests in 2022 (44 of 113) were at or above EPA's action level. Against the national pool of 23.9%, the gap is 15.0 points higher. Across 96 Kansas counties pooled together, 32.0% of tests reached that level, so Dickinson County runs 6.9 points above its state.

Of 5 neighbours with a figure, 4 reported a larger share at or above 4 pCi/L and 1 a smaller one; the spread is 25.2% (Geary County) to 55.8% (Clay County). By share, Dickinson County is 15th of 38 Kansas counties with 30 or more tests for the same period.

Year by year, 2016 opened at 49.4% and 2022 closed at 38.9% (down 10.5 points), with 2016 the high at 49.4%. Half the tests came in under 2.7 pCi/L and half over it; the single highest reached 21.3 pCi/L. Below the action level, 38 tests (33.6%) came in under 2 pCi/L, against 45.8% statewide, and 31 tests (27.4%) fell between 2 and 4, against 22.1% statewide.

Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 38.9% share point the same way here. USGS geology rates 100% of the county's land high radon potential. CDC also counts 16 tests taken after mitigation in Dickinson County for the same period: tests in homes where a fix was already in.

The busiest year on file was 2021, with 330 tests reported; the quietest, 2016, had 85.

Share of reported tests at or above 4 pCi/L by year, Dickinson County against Kansas2016 to 2022, years with 30 or more tests: Dickinson County 49.4% to 38.9%, the state's pooled share 32.0% in 2022.
Dickinson CountyKansas, pooled
Share of reported tests at or above 4 pCi/L by year, Dickinson County against Kansas: data table
YearTestsDickinson County, at or above 4 pCi/LKansas, pooled
20168549.4%35.4%
201712836.7%37.3%
201814542.1%37.3%
201912030.8%33.7%
202014736.7%31.3%
202133037.3%31.8%
202211338.9%32.0%
Dickinson County against Kansas, the United States and nearby counties, 2022
AreaTestsAt or above 4 pCi/LMedianDifference from Dickinson County
Dickinson County11338.9%2.7 pCi/LThis county
Kansas, pooled96 counties, pooled18,38532.0%Not pooled−6.9 points
United States, pooled853 counties, pooled333,14023.9%Not pooled−15.0 points
Mitchell Countyhighest in the state4757.4%6.2 pCi/L+18.5 points
Crawford Countylowest in the state345.9%0.8 pCi/L−33.0 points
Clay County, KSborders it7755.8%4.8 pCi/L+16.9 points
Saline County, KSborders it72952.3%4.2 pCi/L+13.4 points
McPherson County, KSborders it21551.6%4.1 pCi/L+12.7 points
Morris County, KSborders it2343.5%3.5 pCi/L+4.6 points
Marion County, KSborders it4540.0%2.5 pCi/L+1.1 points
Ottawa County, KSborders it2532.0%3.3 pCi/L−6.9 points
Geary County, KSborders it36525.2%1.9 pCi/L−13.7 points
Where Dickinson County's reported results fell, 2022, beside Kansas and the United States
ResultDickinson County testsDickinson County shareKansas shareU.S. shareAgainst Kansas
Under 2 pCi/L3833.6%45.8%54.5%−12.2 points
2 to 4 pCi/L3127.4%22.1%21.7%+5.3 points
4 pCi/L and above4438.9%32.0%23.9%+6.9 points
Dickinson County ranked among the 38 Kansas counties with 30 or more tests, by share at or above 4 pCi/L, 2022
CountyRankTestsAt or above 4 pCi/LMedian
Johnson County10 of 385,24041.2%3.0 pCi/L
Miami County11 of 3821440.2%3.0 pCi/L
Marion County12 of 384540.0%2.5 pCi/L
Cowley County13 of 3811839.8%3.3 pCi/L
Jefferson County14 of 385339.6%2.4 pCi/L
Dickinson County15 of 3811338.9%2.7 pCi/L
Ford County16 of 385036.0%3.8 pCi/L
Shawnee County17 of 3838834.5%2.6 pCi/L
Harvey County18 of 3823234.1%2.8 pCi/L
Franklin County19 of 3810634.0%2.1 pCi/L
Lyon County20 of 384731.9%2.5 pCi/L
Dickinson County radon tests by year, against Kansas' pooled share
YearTestsAt or above 4 pCi/LMedianHighestKansas, pooledChange from the row before
202211338.9%2.7 pCi/L21.3 pCi/L32.0%+1.6 points
202133037.3%2.5 pCi/L17.3 pCi/L31.8%+0.6 points
202014736.7%3.1 pCi/L28.9 pCi/L31.3%+5.9 points
201912030.8%2.4 pCi/L19.4 pCi/L33.7%−11.3 points
201814542.1%3.4 pCi/L30.0 pCi/L37.3%+5.4 points
201712836.7%2.8 pCi/L40.0 pCi/L37.3%−12.7 points
20168549.4%3.9 pCi/L18.2 pCi/L35.4%First on file

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

Dickinson County, Geology

The ground under Dickinson County

Predicted

USGS's geologic map puts all of Dickinson County's mapped land in one class: high radon potential. 96.5% of it lies in the area the map calls Mid-Continent Rift Zone, to which USGS gives a radon index of 12, in the high band (12 to 17).

USGS's geologic areas under Dickinson County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Mid-Continent Rift ZoneFaulted and fractured Permian limestone, dolomite, shale, and sandstone related to the Mid-Continent Rift zone.High1296.5%
Smoky HillsCretaceous marine sandstone, shale, and siltstone covered by discontinuous loess deposits.High123.5%

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

Dickinson County beside the ground around it

Dickinson 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; Ottawa County comes nearest at 100%.

Share of land by USGS radon potential: Dickinson County, the 7 counties bordering it and Kansas
AreaEPA zoneLow potentialModerate potentialHigh potential
Dickinson CountyZone 1NoneNone100%
Geary CountyZone 1None12.8%87.2%
Saline CountyZone 1NoneNone100%
Morris CountyZone 2None80.0%20.0%
Ottawa CountyZone 1NoneNone100%
Clay CountyZone 1None34.7%65.3%
Marion CountyZone 1None82.3%17.7%
McPherson CountyZone 1None52.1%47.9%
Kansas105 counties, pooled by land areaVariesNone40.1%59.9%

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

Local help

Dickinson County, Local resources

Radon testing and mitigation in Dickinson County

Listed radon businesses with an address in Dickinson County:

Listed radon professionals by town: Abilene

What Kansas's program says
Phone
(800) 693-5343

What it means

Dickinson County, Questions

Questions about radon in Dickinson County

Are radon levels high in Dickinson County?

In 2022, 38.9% of the radon tests reported to CDC for Dickinson County, Kansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.7 pCi/L. Of 38 Kansas counties with 30 or more tests for the same period, 14 reported a higher share; pooled, the state comes to 32.0%.

Which counties border Dickinson County?

Dickinson County borders 7 counties: Geary County, Saline County, Morris County, Ottawa County, Clay County, Marion County and McPherson County.

Products

Dickinson County, Products

Testing a home in Dickinson County

In Dickinson County, 38.9% of 113 tests reported to CDC in 2022 reached 4 pCi/L, against 32.0% pooled across Kansas. In Zone 1 the year-round level in Dickinson 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

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

Explore

Dickinson County, Bordering counties

Counties bordering Dickinson County

Calculated by Radon411

Dickinson County, Cities and towns

Cities and towns in Dickinson County

The Census Bureau estimates 18,637 residents in Dickinson County for July 1, 2025, 254 more than in 2020 (+1.4%). That works out to 22 people per square mile of land. Its largest town, Abilene, has 6,552 residents, 35.2% of the total. CDC's 113 reported tests for 2022 work out to 6.1 per 1,000 residents (2025 estimate), close to Kansas' 6.2.

From Abilene to Carlton, CDC publishes no figure by town: each reads Dickinson County's.

The cities and towns in Dickinson County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Abilene6,552+1.6%35.2%
Heringtonextends beyond Dickinson County2,101−0.4%Counted whole
Chapman1,380+0.2%7.4%
Solomonextends beyond Dickinson County1,007+1.9%Counted whole
Enterprise708−0.7%3.8%
Hope313−0.3%1.7%
Woodbine162+1.3%0.9%
Manchester49+2.1%0.3%
Carlton37Level0.2%

9 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). A place that extends beyond Dickinson County is counted whole, so it has no share.

Dickinson County, Homes

Homes in Dickinson County

Dickinson County is a place of houses on their own lots: 89% of its 8,793 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 56% date from before 1960. Owners live in 79% of the occupied homes (Kansas: 67%), so for most households a test and a fix are their own to order.

Homes in Dickinson County, Kansas, 2019 to 2023
HomesDickinson CountyKansas
Housing units8,7931,285,221
Detached houses89%72%
In buildings of 5 or more5%13%
Mobile homes2%4%
Built before 196056%33%
Built since 200012%20%
Middle year built19561975
Owner-occupied79%67%

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