
Long-term kit![]()
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
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
1 of 6 neighbours have 30+ tests, 2019
Nearest county
42.4%
Ford County, 34 miles
Share at 4+ pCi/L, 165 tests, 2019
Ground above low
100.0%
Level with Kansas
Share of land USGS rates moderate or high potential
Tests reported
9
Too few for a share
2018
EPA radon zone
Zone 1
Highest potential
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Read a result for Kiowa County
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
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
Predicted: EPA radon zone
EPA puts all of Kiowa County in
USGS geologic potential: High across 61% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2016 | 85.7% |
| 2017 | 0.0% |
| 2018 | 66.7% |
| 2019 | 0.0% |
| 2020 | 100.0% |
| 2022 | 100.0% |
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.
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).
Kiowa County, Compared
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.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Kiowa County, Geology
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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Ogallala Formation | Tertiary sandstone, in part covered by windblown eolian sand and loess deposits. | High | 12 | 60.9% |
| Arkansas River Lowlands | Dune sands and alluvium. | Moderate | 10 | 39.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
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%.
The map rates the ground, not the air in any home.
Local help
Kiowa County, Local resources
What it means
Kiowa County, Questions
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.
Kiowa County borders 6 counties: Edwards County, Comanche County, Pratt County, Ford County, Clark County and Barber County.
Products
Kiowa County, Products
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 monitors: 1 of 3
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
52.0%at or above 4 pCi/L
Median 4.5 pCi/L · 25 tests
42.4%at or above 4 pCi/L
Median 3.3 pCi/L · 165 tests
0.0%at or above 4 pCi/L
Median 0.8 pCi/L · 3 tests
0.0%at or above 4 pCi/L
Median 1.5 pCi/L · 1 test
0.0%at or above 4 pCi/L
Median 1.6 pCi/L · 7 tests
No CDC figure for 2019; its page reads it against its own neighbours.
Kiowa County, Cities and towns
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.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Greensburg | 739 | +1.4% | 30.4% |
| Haviland | 661 | −1.8% | 27.2% |
| Mullinville | 195 | −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
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 | Kiowa County | Kansas |
|---|---|---|
| Housing units | 1,150 | 1,285,221 |
| Detached houses | 86% | 72% |
| In buildings of 5 or more | 4% | 13% |
| Mobile homes | 5% | 4% |
| Built before 1960 | 40% | 33% |
| Built since 2000 | 34% | 20% |
| Middle year built | 1972 | 1975 |
| Owner-occupied | 75% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.