Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Metcalfe County, Kentucky
EPA puts Metcalfe County in Zone 1, its highest radon zone, and high results are common there: 45.5% of the 33 radon tests reported to CDC (2008 to 2017, laboratory totals) came back at or above 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
45.5%
1.8 pts above KY
- Metcalfe
- 45.5%
- Kentucky
- 43.7%
33 tests, 2008 to 2017
Median result
3.5pCi/L
Below action level
- Metcalfe
- 3.5 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
33
65th of 69 by tests
- Metcalfe
- 33
- Jefferson
- 6,590
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in Kentucky
23 of 69
Middle half
- Metcalfe
- 45.5%
- Meade
- 68.4%
By share, of 69 with 30+ tests
Read a result for Metcalfe County
Starts at Metcalfe County's median, 3.5 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.5 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. Metcalfe County's median reported result, 2008 to 2017.
The data
Metcalfe County, At a glance
Metcalfe County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Metcalfe County in
USGS geologic potential: High across 77% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Metcalfe County, 2008 to 2017, laboratory
Under 2 pCi/L: 24%2 to 4 pCi/L: 30%4 pCi/L and above: 46%
Of 33 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 8 | 24.2% |
| 2 to 4 pCi/L | 10 | 30.3% |
| 4 pCi/L and above | 15 | 45.5% |
What these figures count
These are the 33 tests reported to CDC for Metcalfe County over 2008 to 2017 (laboratory totals), 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: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Metcalfe County, Compared
Metcalfe County radon figures, compared
Calculated by Radon411In Metcalfe County, about 5 in 10 reported tests over the 2008 to 2017 laboratory totals (15 of 33) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 9.8 points higher. Across 120 Kentucky counties pooled together, 43.7% of tests reached that level, so Metcalfe County runs 1.8 points above its state.
Of 5 neighbours with a figure, 3 reported a larger share at or above 4 pCi/L and 2 a smaller one; the spread is 32.3% (Green County) to 65.5% (Hart County). By share, Metcalfe County is 23rd of 69 Kentucky counties with 30 or more tests for the same period.
Half the tests came in under 3.5 pCi/L and half over it; the single highest reached 46.2 pCi/L. Below the action level, 8 tests (24.2%) came in under 2 pCi/L, against 33.2% statewide, and 10 tests (30.3%) fell between 2 and 4, against 23.1% statewide.
Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 45.5% share point the same way here. USGS geology rates 77% of the county's land high radon potential.
CDC's ten-year totals for Metcalfe County went from 28 tests (2005 to 2014) to 33 (2008 to 2017), the share going from 53.6% to 45.5%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Metcalfe County, Geology
The ground under Metcalfe County
PredictedMost of the ground under Metcalfe County is one class on USGS's geologic map: 77.4% of its land is high radon potential, with 22.6% moderate. The map puts 75.7% of Metcalfe County in the area it calls Eastern Pennyroyal and 22.6% in Mississippian Plateau, with one smaller area beside them. USGS gives the first a radon index of 12, in the high band (12 to 17), and the second 11, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Eastern Pennyroyal | Marine shale, sandstone and limestone. | High | 12 | 75.7% |
| Mississippian Plateau | Mississippian marine limestones, dolomites, marine sandstones, siltstones, and shales. | Moderate | 11 | 22.6% |
| Nashville Basin | Mississippian Limestone. | High | 14 | 1.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Metcalfe County beside the ground around it
Metcalfe County has more high-potential ground than Kentucky as a whole: 77.4% of its land against 18.2%. Of the 6 counties that border it, 3 have more high-potential ground, Adair County the most at 100%.
The map rates the ground, not the air in any home.
Local help
Metcalfe County, Local resources
Radon testing and mitigation in Metcalfe 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
Metcalfe County, Questions
Questions about radon in Metcalfe County
Are radon levels high in Metcalfe County?
Over the 2008 to 2017 laboratory totals, 45.5% of the radon tests reported to CDC for Metcalfe County, Kentucky were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.5 pCi/L. Of 69 Kentucky counties with 30 or more tests for the same period, 22 reported a higher share; pooled, the state comes to 43.7%.
Which counties border Metcalfe County?
Metcalfe County borders 6 counties: Cumberland County, Monroe County, Barren County, Green County, Adair County and Hart County.
Products
Metcalfe County, Products
Testing a home in Metcalfe County
In Metcalfe County, 45.5% of 33 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 43.7% pooled across Kentucky. In Zone 1 the year-round level in Metcalfe County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.
Test kits and monitors3
See every kit and monitor
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
Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Metcalfe County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Metcalfe County
Explore
Metcalfe County, Bordering counties
Counties bordering Metcalfe County
Calculated by Radon411- Radon levels in Hart CountyEPA zone 1
65.5%at or above 4 pCi/L
Median 8.0 pCi/L · 84 tests · 20.0 points above Metcalfe County
- Radon levels in Cumberland CountyEPA zone 1
55.6%at or above 4 pCi/L
Median 4.6 pCi/L · 18 tests · 10.1 points above Metcalfe County
- Radon levels in Monroe CountyEPA zone 1
52.9%at or above 4 pCi/L
Median 4.6 pCi/L · 87 tests · 7.4 points above Metcalfe County
- Radon levels in Barren CountyEPA zone 1
51.6%at or above 4 pCi/L
Median 4.0 pCi/L · 186 tests · 6.1 points above Metcalfe County
- Radon levels in Adair CountyEPA zone 1
43.4%at or above 4 pCi/L
Median 3.8 pCi/L · 53 tests · 2.1 points below Metcalfe County
- Radon levels in Green CountyEPA zone 1
32.3%at or above 4 pCi/L
Median 2.5 pCi/L · 31 tests · 13.2 points below Metcalfe County
Metcalfe County, Cities and towns
Cities and towns in Metcalfe County
The Census Bureau estimates 10,583 residents in Metcalfe County for July 1, 2025, 297 more than in 2020 (+2.9%). That works out to 37 people per square mile of land. Edmonton, its one incorporated place, has 1,713 residents, 16.2% of the total. Reported testing is thin here: 33 tests over 2008 to 2017, or 3.1 for every 1,000 residents (2025 estimate), where Kentucky as a whole comes to 6.3.
Edmonton is the one incorporated place here; CDC publishes no figure by town, so it reads Metcalfe County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Edmonton | 1,713 | +1.9% | 16.2% |
One incorporated place, 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).
Metcalfe County, Homes
Homes in Metcalfe County
Of Metcalfe County's 4,719 homes, 66% are detached houses, against 68% across Kentucky; 28% are mobile homes. Half of its homes were built before 1986, close to Kentucky's 1982: 15% date from before 1960 and 24% from 2000 or later. Owners live in 75% of the occupied homes (Kentucky: 68%), so for most households a test and a fix are their own to order.
| Homes | Metcalfe County | Kentucky |
|---|---|---|
| Housing units | 4,719 | 2,010,655 |
| Detached houses | 66% | 68% |
| In buildings of 5 or more | 3% | 12% |
| Mobile homes | 28% | 11% |
| Built before 1960 | 15% | 22% |
| Built since 2000 | 24% | 24% |
| Middle year built | 1986 | 1982 |
| Owner-occupied | 75% | 68% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.