Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Muhlenberg County, Kentucky
EPA puts Muhlenberg County in Zone 2, its middle radon zone, and only 17 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
36.1%
Christian County
- Christian
- 36.1%
- Hopkins
- 9.5%
4 of 7 neighbours have 30+ tests, 2008 to 2017
Nearest county
9.5%
Hopkins County, 23 miles
- Hopkins
- 9.5%
- Kentucky
- 43.7%
Share at 4+ pCi/L, 42 tests, 2008 to 2017
Ground above low
100.0%
5.7 pts above Kentucky
- Muhlenberg
- 100.0%
- Kentucky
- 94.3%
Share of land USGS rates moderate or high potential
Tests reported
19
Too few for a share
- Muhlenberg
- 19
- Needed
- 30
2007 to 2016, 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 Muhlenberg 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
Muhlenberg County, At a glance
Muhlenberg County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Muhlenberg 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 Muhlenberg County, 2008 to 2017, laboratory
CDC holds 17 reported tests for Muhlenberg County over the 2008 to 2017 laboratory totals, with a median of 2.3 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Muhlenberg County beside the counties around it is how this page reads it.
What these figures count
Only 17 tests were reported to CDC for Muhlenberg County over 2008 to 2017 (laboratory totals), 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: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Muhlenberg County, Compared
Muhlenberg County radon figures, compared
Calculated by Radon411CDC's largest figure for Muhlenberg County rests on 19 tests over the 2007 to 2016 laboratory totals, 3 of them at or above 4 pCi/L, so each test moves its share by 5.3 points and no rank or comparison is drawn from it. Results reached as high as 17.0 pCi/L, with a middle value of 2.3 pCi/L.
Of the counties bordering it, 4 have a figure over the 2008 to 2017 laboratory totals: Christian County reported the largest share at or above 4 pCi/L, 36.1%, and Hopkins County the smallest, 9.5%, with Logan County at 31.6% and Todd County at 17.7% between. Farther out, Daviess County (36 miles away) at 20.0%, Warren County (43 miles away) at 61.5% and Simpson County (45 miles away) at 32.5% have figures too. Pooled across 120 Kentucky counties, 43.7% of reported tests reached that level; across every county in the country with a figure, 35.7%.
Statewide for the same period, Meade County reported the highest share (68.4%) and Hopkins County the lowest (9.5%). EPA's 1993 map puts Muhlenberg County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Muhlenberg County, Geology
The ground under Muhlenberg County
PredictedUSGS's geologic map puts all of Muhlenberg County's mapped land in one class: moderate radon potential. 95.3% of it lies in the area the map calls Western Coalfield, 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 |
|---|---|---|---|---|
| Western Coalfield | Limestones, shale, siltstone, and coal beds. | Moderate | 9 | 95.3% |
| Mississippian Plateau | Mississippian marine limestones, dolomites, marine sandstones, siltstones, and shales. | Moderate | 11 | 4.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Muhlenberg County beside the ground around it
Across Kentucky 18.2% of the land is rated high; none of Muhlenberg County's is. Of the 7 counties that border it, none has as large a share of moderate-potential ground; Christian County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Muhlenberg County, Local resources
Radon testing and mitigation in Muhlenberg County
- Kentucky's radon programKentucky Board of Radon SafetyKentucky's radon program answers questions about testing, mitigation and the rules in Kentucky.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 Kentucky8 professionals are listed in Kentucky.
What Kentucky's program says
- Phone
- 502-782-2782
- Radon@ky.gov
What it means
Muhlenberg County, Questions
Questions about radon in Muhlenberg County
Are radon levels high in Muhlenberg County?
Over the 2008 to 2017 laboratory totals, 17.6% of the radon tests reported to CDC for Muhlenberg County, Kentucky were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.3 pCi/L. Of the counties bordering it, 4 have a figure over the 2008 to 2017 laboratory totals: Christian County reported the largest share at or above 4 pCi/L, 36.1%, and Hopkins County the smallest, 9.5%, with Logan County at 31.6% and Todd County at 17.7% between.
Which counties border Muhlenberg County?
Muhlenberg County borders 7 counties: McLean County, Ohio County, Hopkins County, Butler County, Todd County, Christian County and Logan County.
Products
Muhlenberg County, Products
Testing a home in Muhlenberg County
No CDC figure names Muhlenberg County; the nearest county with one, Hopkins County (23 miles away), reported 9.5% 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 Muhlenberg 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
Monitor
Hello Radon C battery radon monitor with an e-ink 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
Muhlenberg County, Bordering counties
Counties bordering Muhlenberg County
Calculated by Radon411- Radon levels in McLean CountyEPA zone 2
50.0%at or above 4 pCi/L
Median 6.7 pCi/L · 2 tests
- Radon levels in Christian CountyEPA zone 2
36.1%at or above 4 pCi/L
Median 3.2 pCi/L · 72 tests
- Radon levels in Logan CountyEPA zone 2
31.6%at or above 4 pCi/L
Median 2.4 pCi/L · 79 tests
- Radon levels in Todd CountyEPA zone 2
17.7%at or above 4 pCi/L
Median 1.8 pCi/L · 62 tests
- Radon levels in Ohio CountyEPA zone 2
11.8%at or above 4 pCi/L
Median 1.9 pCi/L · 17 tests
- Radon levels in Hopkins CountyEPA zone 2
9.5%at or above 4 pCi/L
Median 1.7 pCi/L · 42 tests
- Radon levels in Butler CountyEPA zone 2
3.8%at or above 4 pCi/L
Median 1.5 pCi/L · 26 tests
Muhlenberg County, Cities and towns
Cities and towns in Muhlenberg County
About 30,634 people live in Muhlenberg County by the Census Bureau's estimate for July 1, 2025, 270 fewer than in 2020 (−0.9%). That works out to 66 people per square mile of land. No town dominates: Central City, the largest, has 5,793 residents, 18.9% of the total. Together its 6 incorporated places hold 38.2% of those residents; the other 61.8% live outside any of them. Reported testing is thin here: 19 tests over 2007 to 2016, or 0.6 for every 1,000 residents (2025 estimate), where Kentucky as a whole comes to 5.7.
From Central City to South Carrollton, CDC publishes no figure by town: each reads Muhlenberg County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Central City | 5,793 | −0.4% | 18.9% |
| Greenville | 4,350 | −2.9% | 14.2% |
| Powderly | 787 | +1.4% | 2.6% |
| Drakesboro | 467 | −1.5% | 1.5% |
| Bremen | 173 | −1.1% | 0.6% |
| South Carrollton | 143 | −0.7% | 0.5% |
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).
Muhlenberg County, Homes
Homes in Muhlenberg County
Of Muhlenberg County's 13,533 homes, 75% are detached houses, against 68% across Kentucky; 18% are mobile homes. Half of its homes were built before 1978, close to Kentucky's 1982: 20% date from before 1960 and 20% from 2000 or later. Owners live in 82% of the occupied homes (Kentucky: 68%), so for most households a test and a fix are their own to order.
| Homes | Muhlenberg County | Kentucky |
|---|---|---|
| Housing units | 13,533 | 2,010,655 |
| Detached houses | 75% | 68% |
| In buildings of 5 or more | 4% | 12% |
| Mobile homes | 18% | 11% |
| Built before 1960 | 20% | 22% |
| Built since 2000 | 20% | 24% |
| Middle year built | 1978 | 1982 |
| Owner-occupied | 82% | 68% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.