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
Radon Levels in Pratt County, Kansas
EPA puts Pratt County in Zone 1, its highest radon zone, and only 21 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
Share at 4+ pCi/L
29.4%
2.4 pts below KS
- Pratt
- 29.4%
- Kansas
- 31.8%
102 tests, 2021
Median result
2.8pCi/L
Below action level
- Pratt
- 2.8 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2021
Tests reported
102
36th of 62 by tests
- Pratt
- 102
- Johnson
- 25,860
Reported to CDC before any fix, 2021
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in Kansas
47 of 62
Middle half
- Pratt
- 29.4%
- Norton
- 93.8%
By share, of 62 with 30+ tests
Read a result for Pratt County
Starts at Pratt County's median, 2.8 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.8 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 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. Pratt County's median reported result, 2021.
The data
Pratt County, At a glance
Pratt County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Pratt County in
USGS geologic potential: High across 72% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Pratt County, 2022
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2016 | 31.3% |
| 2017 | 21.4% |
| 2018 | 28.6% |
| 2019 | 52.0% |
| 2020 | 0.0% |
| 2021 | 29.4% |
| 2022 | 28.6% |
2022: 28.6%. Across these years the share ran from 0.0% to 52.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 21 tests were reported to CDC for Pratt 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).
Pratt County, Compared
Pratt County radon figures, compared
Calculated by Radon411Pratt County's 102 reported tests in 2021 had a middle value of 2.8 pCi/L and a maximum of 18.9 pCi/L, and 29.4% reached 4 pCi/L. Kansas as a whole (96 Kansas counties, pooled) comes to 31.8%: 2.4 points higher than here.
The newest figure, in 2022, counts only 21 tests (28.6% at or above 4 pCi/L), too few to compare, so this reading uses the 102-test figure.
Among its state's counties it ranks 47th of 62 Kansas counties with 30 or more tests for the same period. Statewide for the same period, Norton County reported the highest share (93.8%) and Doniphan County the lowest (0.0%).
Below the action level, 42 tests (41.2%) came in under 2 pCi/L, against 45.3% statewide, and 30 tests (29.4%) fell between 2 and 4, against 22.9% statewide. The busiest year on file was 2021, with 102 tests reported; the quietest, 2020, had 7.
EPA's 1993 zone map puts Pratt County in Zone 1, a predicted county average above 4 pCi/L. USGS geology rates 72% of the county's land high radon potential.
Next door, the shares run from 3.4% in Kingman County to 18.1% in Reno County, with Reno County and Kingman County below Pratt County.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Pratt County, Geology
The ground under Pratt County
PredictedUSGS's geologic map splits Pratt County: 71.6% of its land is high radon potential and 28.4% moderate. The map puts 71.6% of Pratt County in the area it calls Ogallala Formation and 28.4% 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 | 71.6% |
| Arkansas River Lowlands | Dune sands and alluvium. | Moderate | 10 | 28.4% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Pratt County beside the ground around it
Pratt County has more high-potential ground than Kansas as a whole: 71.6% of its land against 59.9%. Of the 6 counties that border it, none has as large a share of high-potential ground; Kiowa County comes nearest at 60.9%.
The map rates the ground, not the air in any home.
Local help
Pratt County, Local resources
Radon testing and mitigation in Pratt County
- Kansas Radon ProgramKansas Radon Program answers questions about testing, mitigation and the rules in Kansas.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- Professionals in Kansas178 professionals are listed in Kansas.
What Kansas's program says
- Phone
- (800) 693-5343
What it means
Pratt County, Questions
Questions about radon in Pratt County
Are radon levels high in Pratt County?
In 2022, 28.6% of the radon tests reported to CDC for Pratt County, Kansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.2 pCi/L. Of 62 Kansas counties with 30 or more tests for the same period, 46 reported a higher share; pooled, the state comes to 31.8%.
Which counties border Pratt County?
Pratt County borders 6 counties: Barber County, Kiowa County, Kingman County, Stafford County, Edwards County and Reno County.
Products
Pratt County, Products
Testing a home in Pratt County
In Pratt County, 29.4% of 102 tests reported to CDC in 2021 reached 4 pCi/L, against 31.8% pooled across Kansas. In Zone 1 the year-round level in Pratt 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
Monitor
RadonScan-Plus USB-powered radon monitor with Wi-Fi
- C-NRPP 2024/25: Not included
- Plug-in
- Wi-Fi
- Alarm
- Screen, app
First reading: Within 5 minutes
Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Pratt County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Pratt County
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Pratt County, Bordering counties
Counties bordering Pratt County
Calculated by Radon411- Radon levels in Reno CountyEPA zone 2
18.1%at or above 4 pCi/L
Median 1.9 pCi/L · 648 tests · 11.3 points below Pratt County
- Radon levels in Kingman CountyEPA zone 1
3.4%at or above 4 pCi/L
Median 1.6 pCi/L · 87 tests · 26.0 points below Pratt County
- Radon levels in Stafford CountyEPA zone 2
0.0%at or above 4 pCi/L
Median 2.5 pCi/L · 12 tests · 29.4 points below Pratt County
- Radon levels in Edwards CountyEPA zone 2
0.0%at or above 4 pCi/L
Median 2.7 pCi/L · 3 tests · 29.4 points below Pratt County
- Radon levels in Barber CountyEPA zone 2
No CDC figure for 2021; its page reads it against its own neighbours.
- Radon levels in Kiowa CountyEPA zone 1
No CDC figure for 2021; its page reads it against its own neighbours.
Pratt County, Cities and towns
Cities and towns in Pratt County
Pratt County's population has barely moved since 2020: 9,117 residents on July 1, 2025 against 9,140 then, by the Census Bureau's estimates. That works out to 12 people per square mile of land. Pratt alone is home to 6,574 of them, 72.1% of the total. Together its 7 incorporated places hold 78.1% of those residents; the other 21.9% live outside any of them. Reported testing is thin here: 102 tests over 2021, or 11.2 for every 1,000 residents (2025 estimate), where Kansas as a whole comes to 23.5.
From Pratt to Byers, CDC publishes no figure by town: each reads Pratt County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Pratt | 6,574 | −0.3% | 72.1% |
| Iuka | 151 | Level | 1.7% |
| Preston | 116 | Level | 1.3% |
| Sawyer | 87 | −1.1% | 1.0% |
| Cullison | 86 | Level | 0.9% |
| Coats | 66 | Level | 0.7% |
| Byers | 37 | Level | 0.4% |
7 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).
Pratt County, Homes
Homes in Pratt County
Pratt County is a place of houses on their own lots: 84% of its 4,375 homes are detached single-family houses, against 72% across Kansas. The homes are older than Kansas' as a whole: half were built before 1955 (1975 for Kansas), and 56% date from before 1960. 71% 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 | Pratt County | Kansas |
|---|---|---|
| Housing units | 4,375 | 1,285,221 |
| Detached houses | 84% | 72% |
| In buildings of 5 or more | 7% | 13% |
| Mobile homes | 4% | 4% |
| Built before 1960 | 56% | 33% |
| Built since 2000 | 8% | 20% |
| Middle year built | 1955 | 1975 |
| Owner-occupied | 71% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.