Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
Locations and reports
Radon Levels in Stafford County, Kansas
EPA puts Stafford County in Zone 2, its middle radon zone, and only 6 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
Highest bordering
66.7%
Pawnee County
- Pawnee
- 66.7%
- Reno
- 20.8%
4 of 6 neighbours have 30+ tests, 2019
Nearest county
66.7%
Pawnee County, 30 miles
- Pawnee
- 66.7%
- Kansas
- 33.7%
Share at 4+ pCi/L, 33 tests, 2019
Ground above low
100.0%
Level with Kansas
- Stafford
- 100.0%
- Kansas
- 100.0%
Share of land USGS rates moderate or high potential
Tests reported
14
Too few for a share
- Stafford
- 14
- Needed
- 30
2018
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Stafford County
Starts at EPA's action level
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
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 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
Stafford County, At a glance
Stafford County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Stafford County is a
USGS geologic potential: Moderate across 98% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Stafford County, 2022
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2016 | 33.3% |
| 2017 | 21.4% |
| 2018 | 57.1% |
| 2019 | 50.0% |
| 2021 | 0.0% |
| 2022 | 50.0% |
2022: 50.0%. Across these years the share ran from 0.0% to 57.1%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 6 tests were reported to CDC for Stafford 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).
Stafford County, Compared
Stafford County radon figures, compared
Calculated by Radon411CDC's largest figure for Stafford County rests on 14 tests in 2018, 8 of them at or above 4 pCi/L, so each test moves its share by 7.1 points and no rank or comparison is drawn from it. Results reached as high as 10.3 pCi/L, with a middle value of 5.3 pCi/L.
Of the counties bordering it, 4 have a figure in 2019: Pawnee County reported the largest share at or above 4 pCi/L, 66.7%, and Reno County the smallest, 20.8%, with Rice County at 55.9% and Barton County at 24.6% between. Farther out, Ellsworth County (54 miles away) at 41.0%, McPherson County (63 miles away) at 46.5% and Ford County (68 miles away) at 42.4% 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 Stafford County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 98% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Stafford County, Geology
The ground under Stafford County
PredictedMost of the ground under Stafford County is one class on USGS's geologic map: 97.8% of its land is moderate radon potential, with 2.2% high. 97.8% of it lies in the area the map calls Arkansas River Lowlands, to which USGS gives a radon index of 10, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Arkansas River Lowlands | Dune sands and alluvium. | Moderate | 10 | 97.8% |
| Ogallala Formation | Tertiary sandstone, in part covered by windblown eolian sand and loess deposits. | High | 12 | 2.2% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Stafford County beside the ground around it
Kansas as a whole has more high-potential ground than Stafford County: 59.9% of its land, against 2.2% here. Every one of the 6 counties that border it has more high-potential ground, Rice County the most at 83.3%.
The map rates the ground, not the air in any home.
Local help
Stafford County, Local resources
Radon testing and mitigation in Stafford 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
Stafford County, Questions
Questions about radon in Stafford County
Are radon levels high in Stafford County?
In 2022, 50.0% of the radon tests reported to CDC for Stafford County, Kansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 4.2 pCi/L. Of the counties bordering it, 4 have a figure in 2019: Pawnee County reported the largest share at or above 4 pCi/L, 66.7%, and Reno County the smallest, 20.8%, with Rice County at 55.9% and Barton County at 24.6% between.
Which counties border Stafford County?
Stafford County borders 6 counties: Barton County, Pawnee County, Reno County, Pratt County, Rice County and Edwards County.
Products
Stafford County, Products
Testing a home in Stafford County
No CDC figure names Stafford County; the nearest county with one, Pawnee County (30 miles away), reported 66.7% of its tests at or above 4 pCi/L in 2019, the only reading nearby until a test of this home. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Stafford County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
MonitorX-Sense
XR0B-SR battery digital radon monitor with an alarm
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Stafford County, Bordering counties
Counties bordering Stafford County
Calculated by Radon411- Radon levels in Pawnee CountyEPA zone 1
66.7%at or above 4 pCi/L
Median 4.9 pCi/L · 33 tests
- Radon levels in Rice CountyEPA zone 1
55.9%at or above 4 pCi/L
Median 4.5 pCi/L · 34 tests
- Radon levels in Pratt CountyEPA zone 1
52.0%at or above 4 pCi/L
Median 4.5 pCi/L · 25 tests
- Radon levels in Barton CountyEPA zone 1
24.6%at or above 4 pCi/L
Median 2.0 pCi/L · 57 tests
- Radon levels in Reno CountyEPA zone 2
20.8%at or above 4 pCi/L
Median 2.0 pCi/L · 303 tests
- Radon levels in Edwards CountyEPA zone 2
0.0%at or above 4 pCi/L
Median 0.8 pCi/L · 3 tests
Stafford County, Cities and towns
Cities and towns in Stafford County
About 4,005 people live in Stafford County by the Census Bureau's estimate for July 1, 2025, 55 fewer than in 2020 (−1.4%). Spread over its land, that is 5.1 people to the square mile. Its largest town, St. John, has 1,200 residents, 30.0% of the total. Together its 6 incorporated places hold 69.0% of those residents; the other 31.0% live outside any of them. Reported testing is thin here: 14 tests over 2018, or 3.5 for every 1,000 residents (2025 estimate), where Kansas as a whole comes to 7.8.
From St. John to Radium, CDC publishes no figure by town: each reads Stafford County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| St. John | 1,200 | −2.0% | 30.0% |
| Stafford | 938 | −1.6% | 23.4% |
| Macksville | 464 | −1.1% | 11.6% |
| Hudson | 93 | −2.1% | 2.3% |
| Seward | 43 | Level | 1.1% |
| Radium | 25 | Level | 0.6% |
6 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).
Stafford County, Homes
Homes in Stafford County
Stafford County is a place of houses on their own lots: 88% of its 2,104 homes are detached single-family houses, against 72% across Kansas. The homes are older than Kansas' as a whole: half were built before 1952 (1975 for Kansas), and 62% date from before 1960. Owners live in 82% of the occupied homes (Kansas: 67%), so for most households a test and a fix are their own to order.
| Homes | Stafford County | Kansas |
|---|---|---|
| Housing units | 2,104 | 1,285,221 |
| Detached houses | 88% | 72% |
| In buildings of 5 or more | 1% | 13% |
| Mobile homes | 5% | 4% |
| Built before 1960 | 62% | 33% |
| Built since 2000 | 7% | 20% |
| Middle year built | 1952 | 1975 |
| Owner-occupied | 82% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.