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Radon Levels in Kiowa County, Kansas

EPA puts Kiowa County in Zone 1, its highest radon zone, and only 1 radon test from it is 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

    42.4%

    Ford County

    Ford
    42.4%

    1 of 6 neighbours have 30+ tests, 2019

  • Nearest county

    42.4%

    Ford County, 34 miles

    Ford
    42.4%
    Kansas
    33.7%

    Share at 4+ pCi/L, 165 tests, 2019

  • Ground above low

    100.0%

    Level with Kansas

    Kiowa
    100.0%
    Kansas
    100.0%

    Share of land USGS rates moderate or high potential

  • Tests reported

    9

    Too few for a share

    Kiowa
    9
    Needed
    30

    2018

  • 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 Kiowa 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

Kiowa County, At a glance

Kiowa County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Kiowa 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 61% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Kiowa County, 2022

Share of reported tests at or above 4 pCi/L, by year, Kiowa County
Share of reported tests at or above 4 pCi/L, by year, Kiowa County
YearShare of reported tests at or above 4 pCi/L
201685.7%
20170.0%
201866.7%
20190.0%
2020100.0%
2022100.0%

2022: 100.0%. 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 1 test was reported to CDC for Kiowa 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

Kiowa County, Compared

Kiowa County radon figures, compared

Calculated by Radon411

CDC's largest figure for Kiowa County rests on 9 tests in 2018, 6 of them at or above 4 pCi/L, so each test moves its share by 11.1 points and no rank or comparison is drawn from it. Results reached as high as 5.8 pCi/L, with a middle value of 5.0 pCi/L.

Ford County, the one bordering county with a figure in 2019, reported 42.4% of its tests at or above 4 pCi/L. Farther out, Pawnee County (43 miles away) at 66.7%, Barton County (70 miles away) at 24.6% and Reno County (71 miles away) at 20.8% 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 Kiowa County in Zone 1, the map's highest label: a predicted county average above 4 pCi/L. USGS geology rates 61% of the county's land high radon potential.

Kansas, the United States and the counties around Kiowa 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
Pratt County, KSborders it2552.0%4.5 pCi/L
Ford County, KSborders it16542.4%3.3 pCi/L
Barber County, KSborders it70.0%1.6 pCi/L
Edwards County, KSborders it30.0%0.8 pCi/L
Clark County, KSborders it10.0%1.5 pCi/L
The nearest Kansas counties to Kiowa County with 30 or more tests, 2019
CountyDistanceTestsAt or above 4 pCi/LMedian
Ford County34 mi16542.4%3.3 pCi/L
Pawnee County43 mi3366.7%4.9 pCi/L
Barton County70 mi5724.6%2.0 pCi/L
Reno County71 mi30320.8%2.0 pCi/L
Rice County80 mi3455.9%4.5 pCi/L
Finney County86 mi15630.1%3.0 pCi/L
Seward County90 mi9252.2%4.0 pCi/L
Ellis County94 mi20941.6%3.3 pCi/L
Kiowa County radon tests by year, against Kansas' pooled share
YearTestsAt or above 4 pCi/LMedianHighestKansas, pooledChange from the row before
20221100.0%8.0 pCi/L8.0 pCi/L32.0%Level
20201100.0%4.4 pCi/L4.4 pCi/L31.3%+100.0 points
201910.0%3.8 pCi/L3.8 pCi/L33.7%−66.7 points
2018966.7%5.0 pCi/L5.8 pCi/L37.3%+66.7 points
201720.0%1.5 pCi/L1.9 pCi/L37.3%−85.7 points
2016785.7%6.6 pCi/L12.6 pCi/L35.4%First on file

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

Kiowa County, Geology

The ground under Kiowa County

Predicted

USGS's geologic map splits Kiowa County: 60.9% of its land is high radon potential and 39.1% moderate. The map puts 60.9% of Kiowa County in the area it calls Ogallala Formation and 39.1% in Arkansas River Lowlands. 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 Kiowa County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Ogallala FormationTertiary sandstone, in part covered by windblown eolian sand and loess deposits.High1260.9%
Arkansas River LowlandsDune sands and alluvium.Moderate1039.1%

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

Kiowa County beside the ground around it

On high-potential ground Kiowa County is close to Kansas as a whole: 60.9% of its land against 59.9%. Of the 6 counties that border it, 2 have more high-potential ground, Ford County the most at 77.0%.

Share of land by USGS radon potential: Kiowa County, the 6 counties bordering it and Kansas
AreaEPA zoneLow potentialModerate potentialHigh potential
Kiowa CountyZone 1None39.1%60.9%
Edwards CountyZone 2None82.0%18.0%
Comanche CountyZone 20.2%68.3%31.5%
Pratt CountyZone 1None28.4%71.6%
Ford CountyZone 1None23.0%77.0%
Clark CountyZone 2None49.2%50.8%
Barber CountyZone 20.3%76.8%22.9%
Kansas105 counties, pooled by land areaVariesNone40.1%59.9%

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

What it means

Kiowa County, Questions

Questions about radon in Kiowa County

Are radon levels high in Kiowa County?

In 2022, 100.0% of the radon tests reported to CDC for Kiowa County, Kansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 8.0 pCi/L. Ford County, the one bordering county with a figure in 2019, reported 42.4% of its tests at or above 4 pCi/L.

Which counties border Kiowa County?

Kiowa County borders 6 counties: Edwards County, Comanche County, Pratt County, Ford County, Clark County and Barber County.

Products

Kiowa County, Products

Testing a home in Kiowa County

No CDC figure names Kiowa County; the nearest county with one, Ford County (34 miles away), reported 42.4% 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 Kiowa 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

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

Explore

Kiowa County, Bordering counties

Counties bordering Kiowa County

Calculated by Radon411

Kiowa County, Cities and towns

Cities and towns in Kiowa County

About 2,432 people live in Kiowa County by the Census Bureau's estimate for July 1, 2025, 25 fewer than in 2020 (−1.0%). Spread over its land, that is 3.4 people to the square mile. Its largest town, Greensburg, has 739 residents, 30.4% of the total. Together its 3 incorporated places hold 65.6% of those residents; the other 34.4% live outside any of them. Reported testing is thin here: 9 tests over 2018, or 3.7 for every 1,000 residents (2025 estimate), where Kansas as a whole comes to 7.8.

From Greensburg to Mullinville, CDC publishes no figure by town: each reads Kiowa County's.

The cities and towns in Kiowa County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Greensburg739+1.4%30.4%
Haviland661−1.8%27.2%
Mullinville195−2.0%8.0%

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).

Kiowa County, Homes

Homes in Kiowa County

Kiowa County is a place of houses on their own lots: 86% of its 1,150 homes are detached single-family houses, against 72% across Kansas. Half of its homes were built before 1972, close to Kansas' 1975: 40% date from before 1960 and 34% from 2000 or later. 75% 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 Kiowa County, Kansas, 2019 to 2023
HomesKiowa CountyKansas
Housing units1,1501,285,221
Detached houses86%72%
In buildings of 5 or more4%13%
Mobile homes5%4%
Built before 196040%33%
Built since 200034%20%
Middle year built19721975
Owner-occupied75%67%

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