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Radon Levels in Finney County, Kansas

EPA puts Finney County in Zone 1, its highest radon zone, and 23.7% of its 76 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

  • Share at 4+ pCi/L

    23.7%

    8.3 pts below KS

    Finney
    23.7%
    Kansas
    32.0%

    76 tests, 2022

  • Median result

    3.0pCi/L

    Below action level

    Finney
    3.0 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2022

  • Tests reported

    76

    23rd of 38 by tests

    Finney
    76
    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

    34 of 38

    Lowest quarter

    Finney
    23.7%
    Mitchell
    57.4%

    By share, of 38 with 30+ tests

Read a result for Finney County

Starts at Finney County's median, 3.0 pCi/L

3.0pCi/L

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

EPA’s reading of 3.0 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. Finney County's median reported result, 2022.

The data

Finney County, At a glance

Finney County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Finney 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 71% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Finney County, 2022

Share of reported tests at or above 4 pCi/L, by year, Finney County
Share of reported tests at or above 4 pCi/L, by year, Finney County
YearShare of reported tests at or above 4 pCi/L
201622.9%
201743.1%
201815.9%
201930.1%
202030.0%
202133.3%
202223.7%

2022: 23.7%. Across these years the share ran from 15.9% to 43.1%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

These are the 76 tests reported to CDC for Finney 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

Finney County, Compared

Finney County radon figures, compared

Calculated by Radon411

Finney County's 76 reported tests in 2022 had a middle value of 3.0 pCi/L and a maximum of 34.9 pCi/L, and 23.7% reached 4 pCi/L. Kansas as a whole (96 Kansas counties, pooled) comes to 32.0%: 8.3 points higher than here.

Among its state's counties it ranks 34th of 38 Kansas counties with 30 or more tests for the same period. Statewide for the same period, Mitchell County reported the highest share (57.4%) and Crawford County the lowest (5.9%).

Below the action level, 17 tests (22.4%) came in under 2 pCi/L, against 45.8% statewide, and 41 tests (53.9%) fell between 2 and 4, against 22.1% statewide. The busiest year on file was 2021, with 243 tests reported; the quietest, 2022, had 76.

EPA's 1993 zone map puts Finney County in Zone 1, a predicted county average above 4 pCi/L. USGS geology rates 71% of the county's land high radon potential.

Over 7 years of annual figures the share held within 2 points, from 22.9% in 2016 to 23.7% in 2022; its peak was 43.1% in 2017.

CDC also counts 7 tests taken after mitigation in Finney County for the same period: tests in homes where a fix was already in.

Share of reported tests at or above 4 pCi/L by year, Finney County against Kansas2016 to 2022, years with 30 or more tests: Finney County 22.9% to 23.7%, the state's pooled share 32.0% in 2022.
Finney CountyKansas, pooled
Share of reported tests at or above 4 pCi/L by year, Finney County against Kansas: data table
YearTestsFinney County, at or above 4 pCi/LKansas, pooled
201610522.9%35.4%
201712343.1%37.3%
201813215.9%37.3%
201915630.1%33.7%
202011030.0%31.3%
202124333.3%31.8%
20227623.7%32.0%
Finney County against Kansas, the United States and nearby counties, 2022
AreaTestsAt or above 4 pCi/LMedianDifference from Finney County
Finney County7623.7%3.0 pCi/LThis county
Kansas, pooled96 counties, pooled18,38532.0%Not pooled+8.3 points
United States, pooled853 counties, pooled333,14023.9%Not pooled+0.2 points
Mitchell Countyhighest in the state4757.4%6.2 pCi/L+33.7 points
Crawford Countylowest in the state345.9%0.8 pCi/L−17.8 points
Lane County, KSborders it887.5%6.8 pCi/L+63.8 points
Scott County, KSborders it2075.0%7.2 pCi/L+51.3 points
Ness County, KSborders it2669.2%10.2 pCi/L+45.5 points
Kearny County, KSborders it250.0%4.5 pCi/L+26.3 points
Gray County, KSborders it1435.7%3.0 pCi/L+12.0 points
Grant County, KSborders it20.0%2.8 pCi/L−23.7 points
Where Finney County's reported results fell, 2022, beside Kansas and the United States
ResultFinney County testsFinney County shareKansas shareU.S. shareAgainst Kansas
Under 2 pCi/L1722.4%45.8%54.5%−23.4 points
2 to 4 pCi/L4153.9%22.1%21.7%+31.8 points
4 pCi/L and above1823.7%32.0%23.9%−8.3 points
Finney 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
Leavenworth County28 of 3851526.8%1.9 pCi/L
Douglas County29 of 3886825.8%1.8 pCi/L
Butler County30 of 3855025.5%2.1 pCi/L
Reno County31 of 3824025.4%2.2 pCi/L
Pottawatomie County32 of 3820625.2%1.7 pCi/L
Geary County33 of 3836525.2%1.9 pCi/L
Finney County34 of 387623.7%3.0 pCi/L
Sedgwick County35 of 384,91118.4%1.3 pCi/L
Montgomery County36 of 386911.6%0.8 pCi/L
Allen County37 of 38348.8%0.9 pCi/L
Crawford County38 of 38345.9%0.8 pCi/L
Finney County radon tests by year, against Kansas' pooled share
YearTestsAt or above 4 pCi/LMedianHighestKansas, pooledChange from the row before
20227623.7%3.0 pCi/L34.9 pCi/L32.0%−9.6 points
202124333.3%3.1 pCi/L14.2 pCi/L31.8%+3.3 points
202011030.0%2.8 pCi/L22.3 pCi/L31.3%−0.1 points
201915630.1%3.0 pCi/L10.9 pCi/L33.7%+14.2 points
201813215.9%2.0 pCi/L11.5 pCi/L37.3%−27.2 points
201712343.1%3.7 pCi/L16.0 pCi/L37.3%+20.2 points
201610522.9%2.8 pCi/L13.9 pCi/L35.4%First on file

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

Finney County, Geology

The ground under Finney County

Predicted

USGS's geologic map splits Finney County: 71.1% of its land is high radon potential and 28.9% moderate. The map puts 53.9% of Finney County in the area it calls Ogallala Formation and 28.9% in Arkansas River Lowlands, with one smaller area beside them. USGS gives the first a radon index of 12, in the high band (12 to 17), and the second 10, in the moderate band (9 to 11).

USGS's geologic areas under Finney County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Ogallala FormationTertiary sandstone, in part covered by windblown eolian sand and loess deposits.High1253.9%
Arkansas River LowlandsDune sands and alluvium.Moderate1028.9%
Smoky HillsCretaceous marine sandstone, shale, and siltstone covered by discontinuous loess deposits.High1217.2%

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

Finney County beside the ground around it

Finney County has more high-potential ground than Kansas as a whole: 71.1% of its land against 59.9%. Of the 8 counties that border it, 7 have more high-potential ground, Hodgeman County the most at 100%.

Share of land by USGS radon potential: Finney County, the 8 counties bordering it and Kansas
AreaEPA zoneLow potentialModerate potentialHigh potential
Finney CountyZone 1None28.9%71.1%
Haskell CountyZone 1None8.3%91.7%
Kearny CountyZone 1None31.3%68.7%
Gray CountyZone 1None28.3%71.7%
Grant CountyZone 1None19.2%80.8%
Scott CountyZone 1NoneNone100%
Lane CountyZone 1NoneNone100%
Hodgeman CountyZone 1NoneNone100%
Ness CountyZone 1NoneNone100%
Kansas105 counties, pooled by land areaVariesNone40.1%59.9%

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

What it means

Finney County, Questions

Questions about radon in Finney County

Are radon levels high in Finney County?

In 2022, 23.7% of the radon tests reported to CDC for Finney County, Kansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.0 pCi/L. Of 38 Kansas counties with 30 or more tests for the same period, 33 reported a higher share; pooled, the state comes to 32.0%.

Which counties border Finney County?

Finney County borders 8 counties: Haskell County, Kearny County, Gray County, Grant County, Scott County, Lane County, Hodgeman County and Ness County.

Products

Finney County, Products

Testing a home in Finney County

In Finney County, 23.7% of 76 tests reported to CDC in 2022 reached 4 pCi/L, against 32.0% pooled across Kansas. In Zone 1 the year-round level in Finney 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

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

Explore

Finney County, Bordering counties

Counties bordering Finney County

Calculated by Radon411

Finney County, Cities and towns

Cities and towns in Finney County

About 37,505 people live in Finney County by the Census Bureau's estimate for July 1, 2025, 802 fewer than in 2020 (−2.1%). That works out to 29 people per square mile of land. Garden City alone is home to 27,402 of them, 73.1% of the total. Together its 2 incorporated places hold 78.9% of those residents; the other 21.1% live outside any of them. Reported testing is thin here: 76 tests over 2022, or 2.0 for every 1,000 residents (2025 estimate), where Kansas as a whole comes to 6.2.

From Garden City to Holcomb, CDC publishes no figure by town: each reads Finney County's.

The cities and towns in Finney County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Garden City27,402−2.3%73.1%
Holcomb2,190−2.3%5.8%

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).

Finney County, Homes

Homes in Finney County

Of Finney County's 14,279 homes, 61% are detached houses, against 72% across Kansas; 13% are mobile homes. Half of its homes were built before 1977, close to Kansas' 1975: 21% date from before 1960 and 13% from 2000 or later. 64% 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 Finney County, Kansas, 2019 to 2023
HomesFinney CountyKansas
Housing units14,2791,285,221
Detached houses61%72%
In buildings of 5 or more10%13%
Mobile homes13%4%
Built before 196021%33%
Built since 200013%20%
Middle year built19771975
Owner-occupied64%67%

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