Short-term kit
Air Chek Short-Term radon test kit you hang, lab fee included
- Lab fee included
In home: 72 to 168 hours
Locations and reports
Radon Levels in Montgomery County, Kansas
EPA puts Montgomery County in Zone 2, its middle radon zone, and most reported tests there come back low, though 11.6% of 69 (2022) reached 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
11.6%
20.4 pts below KS
- Montgomery
- 11.6%
- Kansas
- 32.0%
69 tests, 2022
Median result
0.8pCi/L
Below action level
- Montgomery
- 0.8 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2022
Tests reported
69
24th of 38 by tests
- Montgomery
- 69
- Johnson
- 5,240
Reported to CDC before any fix, 2022
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Kansas
36 of 38
Lowest quarter
- Montgomery
- 11.6%
- Mitchell
- 57.4%
By share, of 38 with 30+ tests
Read a result for Montgomery County
Starts at Montgomery County's median, 0.8 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 0.8 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Montgomery County's median reported result, 2022.
The data
Montgomery County, At a glance
Montgomery County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Montgomery County is a
USGS geologic potential: Moderate across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Montgomery County, 2022
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2016 | 0.0% |
| 2017 | 4.0% |
| 2018 | 30.0% |
| 2019 | 0.0% |
| 2020 | 0.0% |
| 2021 | 66.7% |
| 2022 | 11.6% |
2022: 11.6%. Across these years the share ran from 0.0% to 66.7%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 69 tests reported to CDC for Montgomery 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).
Montgomery County, Compared
Montgomery County radon figures, compared
Calculated by Radon411Montgomery County reports fewer high tests than Kansas overall. 11.6% of its 69 tests in 2022 were at or above 4 pCi/L. That is 20.4 points below the 32.0% pooled from 96 Kansas counties.
Ordered from highest share down, it comes 36th of 38 Kansas counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 23.9%; Montgomery County sits 12.3 points below it.
Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 11.6% share point the same way here.
Half the tests came in under 0.8 pCi/L and half over it; the single highest reached 37.8 pCi/L. The rest split 85.5% under 2 pCi/L and 2.9% from 2 to 4 (Kansas: 45.8% and 22.1%).
The busiest year on file was 2022, with 69 tests reported; the quietest, 2020, had 2.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Montgomery County, Geology
The ground under Montgomery County
PredictedMost of the ground under Montgomery County is one class on USGS's geologic map: 99.7% of its land is moderate radon potential, with 0.3% low. All of it lies in the area the map calls Glaciated Area, to which USGS gives a radon index of 9, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Glaciated Area | Glacial till underlain by Pennsylvanian and Permian marine and nonmarine sedimentary shale, sandstone, limestone, coal. | Moderate | 9 | 99.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Montgomery County beside the ground around it
Across Kansas 59.9% of the land is rated high; none of Montgomery County's is. Of the 7 counties that border it, 4 have more moderate-potential ground, Elk County the most at 100%.
The map rates the ground, not the air in any home.
Local help
Montgomery County, Local resources
Radon testing and mitigation in Montgomery 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
Montgomery County, Questions
Questions about radon in Montgomery County
Are radon levels high in Montgomery County?
In 2022, 11.6% of the radon tests reported to CDC for Montgomery County, Kansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.8 pCi/L. Of 38 Kansas counties with 30 or more tests for the same period, 35 reported a higher share; pooled, the state comes to 32.0%.
Which counties border Montgomery County?
Montgomery County borders 7 counties: Labette County, KS, Nowata County, OK, Wilson County, KS, Washington County, OK, Chautauqua County, KS, Elk County, KS and Neosho County, KS.
Products
Montgomery County, Products
Testing a home in Montgomery County
In Montgomery County, 11.6% of 69 tests reported to CDC in 2022 reached 4 pCi/L, against 32.0% pooled across Kansas. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Montgomery 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
XR0A-iR Wi-Fi battery radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Wi-Fi
- Screen, app
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
Montgomery County, Bordering counties
Counties bordering Montgomery County
Calculated by Radon411- Radon levels in Wilson County, KSEPA zone 2
25.0%at or above 4 pCi/L
Median 1.9 pCi/L · 8 tests · 13.4 points above Montgomery County
- Radon levels in Neosho County, KSEPA zone 2
20.0%at or above 4 pCi/L
Median 3.0 pCi/L · 5 tests · 8.4 points above Montgomery County
- Radon levels in Labette County, KSEPA zone 2
16.0%at or above 4 pCi/L
Median 1.3 pCi/L · 25 tests · 4.4 points above Montgomery County
- Radon levels in Nowata County, OKEPA zone 3
No CDC figure for 2022; its page reads it against its own neighbours.
- Radon levels in Washington County, OKEPA zone 3
No CDC figure for 2022; its page reads it against its own neighbours.
- Radon levels in Chautauqua County, KSEPA zone 2
No CDC figure for 2022; its page reads it against its own neighbours.
- Radon levels in Elk County, KSEPA zone 2
No CDC figure for 2022; its page reads it against its own neighbours.
Montgomery County, Cities and towns
Cities and towns in Montgomery County
About 30,177 people live in Montgomery County by the Census Bureau's estimate for July 1, 2025, 1,224 fewer than in 2020 (−3.9%). That works out to 47 people per square mile of land. Its largest town, Coffeyville, has 8,460 residents, 28.0% of the total. Together its 9 incorporated places hold 70.9% of those residents; the other 29.1% live outside any of them. Reported testing is thin here: 69 tests over 2022, or 2.3 for every 1,000 residents (2025 estimate), where Kansas as a whole comes to 6.2.
From Coffeyville to Havana, CDC publishes no figure by town: each reads Montgomery County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Coffeyville | 8,460 | −3.8% | 28.0% |
| Independence | 8,193 | −4.1% | 27.1% |
| Cherryvale | 2,093 | −3.7% | 6.9% |
| Caney | 1,704 | −4.3% | 5.6% |
| Dearing | 371 | −3.6% | 1.2% |
| Elk City | 247 | −3.5% | 0.8% |
| Tyro | 162 | −5.3% | 0.5% |
| Liberty | 95 | −4.0% | 0.3% |
| Havana | 82 | −1.2% | 0.3% |
9 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).
Montgomery County, Homes
Homes in Montgomery County
Montgomery County is a place of houses on their own lots: 82% of its 15,566 homes are detached single-family houses, against 72% across Kansas. The homes are older than Kansas' as a whole: half were built before 1956 (1975 for Kansas), and 54% date from before 1960. 73% 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 | Montgomery County | Kansas |
|---|---|---|
| Housing units | 15,566 | 1,285,221 |
| Detached houses | 82% | 72% |
| In buildings of 5 or more | 7% | 13% |
| Mobile homes | 7% | 4% |
| Built before 1960 | 54% | 33% |
| Built since 2000 | 8% | 20% |
| Middle year built | 1956 | 1975 |
| Owner-occupied | 73% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.