Short-term kit
PicoCan short-term charcoal canister radon test
- Lab fee included
Method: Charcoal
In home: 48 to 96 hours
Locations and reports
Radon Levels in Bollinger County, Missouri
EPA puts Bollinger County in Zone 2, its middle radon zone, and only 2 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
37.8%
Perry County
- Perry
- 37.8%
- Cape Girardeau
- 35.2%
2 of 5 neighbours have 30+ tests, 2008 to 2017
Nearest county
35.2%
Cape Girardeau County, 19 miles
- Cape Girardeau
- 35.2%
- Missouri
- 30.6%
Share at 4+ pCi/L, 253 tests, 2008 to 2017
Ground above low
93.7%
0.5 pts below Missouri
- Bollinger
- 93.7%
- Missouri
- 94.2%
Share of land USGS rates moderate or high potential
Tests reported
9
Too few for a share
- Bollinger
- 9
- Needed
- 30
2005 to 2014, laboratory
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 Bollinger 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
Bollinger County, At a glance
Bollinger County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Bollinger County is a
USGS geologic potential: Moderate across 94% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Bollinger County, 2022
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 100.0% |
| 2016 | 0.0% |
| 2017 | 100.0% |
| 2018 | 0.0% |
| 2022 | 50.0% |
2022: 50.0%. 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 2 tests were reported to CDC for Bollinger 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: 2005 to 2022 (every CDC figure on file).
Bollinger County, Compared
Bollinger County radon figures, compared
Calculated by Radon411CDC's largest figure for Bollinger County rests on 9 tests over the 2005 to 2014 laboratory totals, 1 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 6.0 pCi/L, with a middle value of 2.3 pCi/L.
Of the counties bordering it, 2 have a figure over the 2008 to 2017 laboratory totals: Perry County reported the largest share at or above 4 pCi/L, 37.8%, and Cape Girardeau County the smallest, 35.2%. Farther out, Scott County (31 miles away) at 29.4%, Ste. Genevieve County (41 miles away) at 31.1% and St. Francois County (42 miles away) at 41.1% have figures too. Pooled across 115 Missouri counties, 30.6% of reported tests reached that level; across every county in the country with a figure, 35.7%.
Statewide for the same period, Atchison County reported the highest share (69.9%) and Vernon County the lowest (8.8%). EPA's 1993 map puts Bollinger County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 94% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Bollinger County, Geology
The ground under Bollinger County
PredictedMost of the ground under Bollinger County is one class on USGS's geologic map: 93.7% of its land is moderate radon potential, with 6.3% low. The map puts 93.7% of Bollinger County in the area it calls Salem Plateau and 6.3% in Coastal Plains Province. USGS gives the first a radon index of 11, in the moderate band (9 to 11), and the second 5, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Salem Plateau | Ordovician dolomite, sandstone, limestone, and shale. | Moderate | 11 | 93.7% |
| Coastal Plains Province | Tertiary-Quaternary sandstone, shale, and alluvium. | Low | 5 | 6.3% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Bollinger County beside the ground around it
Across Missouri 8.2% of the land is rated high; none of Bollinger County's is. Of the 5 counties that border it, 2 have more high-potential ground, Madison County the most at 68.2%.
The map rates the ground, not the air in any home.
Local help
Bollinger County, Local resources
Radon testing and mitigation in Bollinger County
- Missouri Radon ProgramMissouri Radon Program, run by Missouri Department of Health and Senior Services, offers free or discounted test kits, and answers questions about testing and mitigation in Missouri.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Free radon test kits are available for Missouri residents (limit one per household).
- Compare kits
- Professionals in Missouri27 professionals are listed in Missouri.
What Missouri's program says
- Phone
- 573-751-6102
- radon@health.mo.gov
What it means
Bollinger County, Questions
Questions about radon in Bollinger County
Are radon levels high in Bollinger County?
In 2022, 50.0% of the radon tests reported to CDC for Bollinger County, Missouri were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.5 pCi/L. Of the counties bordering it, 2 have a figure over the 2008 to 2017 laboratory totals: Perry County reported the largest share at or above 4 pCi/L, 37.8%, and Cape Girardeau County the smallest, 35.2%.
Which counties border Bollinger County?
Bollinger County borders 5 counties: Madison County, Cape Girardeau County, Perry County, Wayne County and Stoddard County.
Products
Bollinger County, Products
Testing a home in Bollinger County
No CDC figure names Bollinger County; the nearest county with one, Cape Girardeau County (19 miles away), reported 35.2% of its tests at or above 4 pCi/L over the 2008 to 2017 laboratory totals, 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 Bollinger County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
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
MonitorX-Sense
XR0A-SR battery digital radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- 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
Bollinger County, Bordering counties
Counties bordering Bollinger County
Calculated by Radon411- Radon levels in Madison CountyEPA zone 2
39.1%at or above 4 pCi/L
Median 3.5 pCi/L · 23 tests
- Radon levels in Perry CountyEPA zone 2
37.8%at or above 4 pCi/L
Median 3.2 pCi/L · 82 tests
- Radon levels in Cape Girardeau CountyEPA zone 2
35.2%at or above 4 pCi/L
Median 2.8 pCi/L · 253 tests
- Radon levels in Wayne CountyEPA zone 2
23.5%at or above 4 pCi/L
Median 1.9 pCi/L · 17 tests
- Radon levels in Stoddard CountyEPA zone 3
12.0%at or above 4 pCi/L
Median 1.1 pCi/L · 25 tests
Bollinger County, Cities and towns
Cities and towns in Bollinger County
The Census Bureau estimates 10,646 residents in Bollinger County for July 1, 2025, 90 more than in 2020 (+0.9%). That works out to 17 people per square mile of land. No town dominates: Marble Hill, the largest, has 1,380 residents, 13.0% of the total. Together its 3 incorporated places hold 15.4% of those residents; the other 84.6% live outside any of them. Reported testing is thin here: 9 tests over 2005 to 2014, or 0.8 for every 1,000 residents (2025 estimate), where Missouri as a whole comes to 6.8.
From Marble Hill to Glen Allen, CDC publishes no figure by town: each reads Bollinger County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Marble Hill | 1,380 | +0.4% | 13.0% |
| Sedgewickville | 192 | +0.5% | 1.8% |
| Glen Allen | 66 | +3.1% | 0.6% |
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).
Bollinger County, Homes
Homes in Bollinger County
Bollinger County is a place of houses on their own lots: 81% of its 5,047 homes are detached single-family houses, against 70% across Missouri. Half of its homes were built before 1979, close to Missouri's 1978: 24% date from before 1960 and 17% from 2000 or later. Owners live in 80% of the occupied homes (Missouri: 68%), so for most households a test and a fix are their own to order.
| Homes | Bollinger County | Missouri |
|---|---|---|
| Housing units | 5,047 | 2,809,501 |
| Detached houses | 81% | 70% |
| In buildings of 5 or more | 2% | 13% |
| Mobile homes | 15% | 5% |
| Built before 1960 | 24% | 28% |
| Built since 2000 | 17% | 21% |
| Middle year built | 1979 | 1978 |
| Owner-occupied | 80% | 68% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.