Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Pike County, Missouri
EPA puts Pike County in Zone 2, its middle radon zone, and only 3 radon tests from it are on file with CDC (2023). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
40.0%
9.4 pts above MO
- Pike
- 40.0%
- Missouri
- 30.6%
35 tests, 2008 to 2017
Median result
2.9pCi/L
Below action level
- Pike
- 2.9 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
35
66th of 72 by tests
- Pike
- 35
- St. Louis
- 17,747
Reported to CDC before any fix, 2008 to 2017
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 Missouri
16 of 72
Top quarter
- Pike
- 40.0%
- Atchison
- 69.9%
By share, of 72 with 30+ tests
Read a result for Pike County
Starts at Pike County's median, 2.9 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.9 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. Pike County's median reported result, 2008 to 2017.
The data
Pike County, At a glance
Pike County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Pike County is a
USGS geologic potential: Moderate across 96% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Pike County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 50.0% |
| 2016 | 66.7% |
| 2017 | 0.0% |
| 2018 | 100.0% |
| 2019 | 33.3% |
| 2021 | 0.0% |
| 2022 | 37.5% |
| 2023 | 0.0% |
2023: 0.0%. 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 3 tests were reported to CDC for Pike County over 2023, 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: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).
Pike County, Compared
Pike County radon figures, compared
Calculated by Radon411In Pike County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (14 of 35) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 4.3 points higher. Across 115 Missouri counties pooled together, 30.6% of tests reached that level, so Pike County runs 9.4 points above its state.
The newest figure, in 2023, counts only 3 tests (0.0% at or above 4 pCi/L), too few to compare, so this reading uses the 35-test figure.
Of 5 neighbours with a figure, 1 reported a larger share at or above 4 pCi/L and 4 a smaller one; the spread is 12.8% (Montgomery County) to 46.3% (Pike County, IL). By share, Pike County is 16th of 72 Missouri counties with 30 or more tests for the same period.
Half the tests came in under 2.9 pCi/L and half over it; the single highest reached 16.6 pCi/L. Below the action level, 12 tests (34.3%) came in under 2 pCi/L, against 41.2% statewide, and 9 tests (25.7%) fell between 2 and 4, against 28.1% statewide.
Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 40.0% share point the same way here. USGS geology rates 96% of the county's land moderate radon potential.
The busiest year on file was 2022, with 8 tests reported; the quietest, 2018, had 1.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Pike County, Geology
The ground under Pike County
PredictedMost of the ground under Pike County is one class on USGS's geologic map: 95.6% of its land is moderate radon potential, with 4.4% high. 95.6% of it lies in the area the map calls Dissected Till Plains, to which USGS gives a radon index of 11, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Dissected Till Plains | Till-covered Pennsylvanian sandstone, shale, and limestone. | Moderate | 11 | 95.6% |
| Galesburg Plain | Illinoian glacial deposits and loess over Paleozoic sedimentary rocks. | High | 13 | 4.4% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Pike County beside the ground around it
On high-potential ground Pike County is close to Missouri as a whole: 4.4% of its land against 8.2%. Of the 6 counties that border it, 2 have more high-potential ground, Pike County, IL the most at 99.9%.
The map rates the ground, not the air in any home.
Local help
Pike County, Local resources
Radon testing and mitigation in Pike 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
Pike County, Questions
Questions about radon in Pike County
Are radon levels high in Pike County?
In 2023, 0.0% of the radon tests reported to CDC for Pike County, Missouri were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.1 pCi/L. Of 72 Missouri counties with 30 or more tests for the same period, 15 reported a higher share; pooled, the state comes to 30.6%.
Which counties border Pike County?
Pike County borders 6 counties: Pike County, IL, Ralls County, MO, Lincoln County, MO, Calhoun County, IL, Montgomery County, MO and Audrain County, MO.
Products
Pike County, Products
Testing a home in Pike County
In Pike County, 40.0% of 35 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 30.6% pooled across Missouri. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Pike 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
Monitor
lüft plug-in radon and indoor air quality monitor
- C-NRPP 2024/25: Approved
- Plug-in
- Wi-Fi, Bluetooth
- App only
First reading: Within 90 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Pike County, Bordering counties
Counties bordering Pike County
Calculated by Radon411- Radon levels in Calhoun County, ILEPA zone 1
66.7%at or above 4 pCi/L
Median 4.5 pCi/L · 6 tests · 26.7 points above Pike County
- Radon levels in Pike County, ILEPA zone 1
46.3%at or above 4 pCi/L
Median 3.8 pCi/L · 108 tests · 6.3 points above Pike County
- Radon levels in Lincoln County, MOEPA zone 2
33.6%at or above 4 pCi/L
Median 2.2 pCi/L · 444 tests · 6.4 points below Pike County
- Radon levels in Ralls County, MOEPA zone 2
32.6%at or above 4 pCi/L
Median 2.7 pCi/L · 43 tests · 7.4 points below Pike County
- Radon levels in Audrain County, MOEPA zone 2
29.9%at or above 4 pCi/L
Median 2.5 pCi/L · 127 tests · 10.1 points below Pike County
- Radon levels in Montgomery County, MOEPA zone 2
12.8%at or above 4 pCi/L
Median 1.6 pCi/L · 47 tests · 27.2 points below Pike County
Pike County, Cities and towns
Cities and towns in Pike County
The Census Bureau estimates 17,955 residents in Pike County for July 1, 2025, 544 more than in 2020 (+3.1%). That works out to 27 people per square mile of land. Its largest town, Bowling Green, has 4,472 residents, 24.9% of the total. Together its 8 incorporated places hold 51.0% of those residents; the other 49.0% live outside any of them. Reported testing is thin here: 35 tests over 2008 to 2017, or 1.9 for every 1,000 residents (2025 estimate), where Missouri as a whole comes to 9.3.
From Bowling Green to Annada, CDC publishes no figure by town: each reads Pike County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Bowling Green | 4,472 | +11.7% | 24.9% |
| Louisiana | 3,208 | +0.2% | 17.9% |
| Eolia | 482 | +0.4% | 2.7% |
| Clarksville | 377 | +0.5% | 2.1% |
| Frankford | 337 | Level | 1.9% |
| Curryville | 201 | +1.5% | 1.1% |
| Paynesville | 65 | +1.6% | 0.4% |
| Annada | 13 | +8.3% | Under 0.1% |
8 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).
Pike County, Homes
Homes in Pike County
Of Pike County's 7,629 homes, 75% are detached houses, against 70% across Missouri; 13% are mobile homes. The homes are older than Missouri's as a whole: half were built before 1970 (1978 for Missouri), and 34% date from before 1960. 73% of occupied homes are lived in by their owner (Missouri: 68%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Pike County | Missouri |
|---|---|---|
| Housing units | 7,629 | 2,809,501 |
| Detached houses | 75% | 70% |
| In buildings of 5 or more | 5% | 13% |
| Mobile homes | 13% | 5% |
| Built before 1960 | 34% | 28% |
| Built since 2000 | 17% | 21% |
| Middle year built | 1970 | 1978 |
| Owner-occupied | 73% | 68% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.