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 Lincoln County, Kentucky
EPA puts Lincoln County in Zone 1, its highest radon zone, and 35.6% of its 135 reported radon tests (2008 to 2017, laboratory totals) were 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
35.6%
8.1 pts below KY
- Lincoln
- 35.6%
- Kentucky
- 43.7%
135 tests, 2008 to 2017
Median result
2.8pCi/L
Below action level
- Lincoln
- 2.8 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
135
29th of 69 by tests
- Lincoln
- 135
- 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
37 of 69
Middle half
- Lincoln
- 35.6%
- Meade
- 68.4%
By share, of 69 with 30+ tests
Read a result for Lincoln County
Starts at Lincoln County's median, 2.8 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.8 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. Lincoln County's median reported result, 2008 to 2017.
The data
Lincoln County, At a glance
Lincoln County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Lincoln 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 Lincoln County, 2008 to 2017, laboratory
Under 2 pCi/L: 36%2 to 4 pCi/L: 28%4 pCi/L and above: 36%
Of 135 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 49 | 36.3% |
| 2 to 4 pCi/L | 38 | 28.1% |
| 4 pCi/L and above | 48 | 35.6% |
What these figures count
These are the 135 tests reported to CDC for Lincoln 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).
Lincoln County, Compared
Lincoln County radon figures, compared
Calculated by Radon411In Lincoln County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (48 of 135) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 0.1 points lower. Across 120 Kentucky counties pooled together, 43.7% of tests reached that level, so Lincoln County runs 8.1 points below its state.
Of 4 neighbours with a figure, 3 reported a larger share at or above 4 pCi/L and 1 a smaller one; the spread is 32.6% (Casey County) to 59.5% (Pulaski County). By share, Lincoln County is 37th of 69 Kentucky counties with 30 or more tests for the same period.
Half the tests came in under 2.8 pCi/L and half over it; the single highest reached 74.1 pCi/L. Below the action level, 49 tests (36.3%) came in under 2 pCi/L, against 33.2% statewide, and 38 tests (28.1%) fell between 2 and 4, against 23.1% statewide.
Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 35.6% share point the same way here. USGS geology rates 77% of the county's land high radon potential. CDC also counts 6 tests taken after mitigation in Lincoln County for the same period: tests in homes where a fix was already in.
CDC's ten-year totals for Lincoln County went from 106 tests (2005 to 2014) to 135 (2008 to 2017), the share going from 30.2% to 35.6%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Lincoln County, Geology
The ground under Lincoln County
PredictedMost of the ground under Lincoln County is one class on USGS's geologic map: 76.7% of its land is high radon potential, with 23.3% moderate. The map puts 41.2% of Lincoln County in the area it calls New Albany-Chattanooga Shale and 35.6% in Eastern Pennyroyal, with 2 smaller areas beside them. USGS gives the first a radon index of 14 and the second 12, both in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| New Albany-Chattanooga Shale | Devonian/Mississippian Black shale. | High | 14 | 41.2% |
| Eastern Pennyroyal | Marine shale, sandstone and limestone. | High | 12 | 35.6% |
| Outer Bluegrass | Ordovician-Devonian limestone and shale. | Moderate | 11 | 18.5% |
| Mississippian Plateau | Mississippian marine limestones, dolomites, marine sandstones, siltstones, and shales. | Moderate | 11 | 4.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Lincoln County beside the ground around it
Lincoln County has more high-potential ground than Kentucky as a whole: 76.7% of its land against 18.2%. Of the 5 counties that border it, 1 has more high-potential ground, Casey County the most at 100%.
The map rates the ground, not the air in any home.
Local help
Lincoln County, Local resources
Radon testing and mitigation in Lincoln 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
Lincoln County, Questions
Questions about radon in Lincoln County
Are radon levels high in Lincoln County?
Over the 2008 to 2017 laboratory totals, 35.6% of the radon tests reported to CDC for Lincoln County, Kentucky were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.8 pCi/L. Of 69 Kentucky counties with 30 or more tests for the same period, 36 reported a higher share; pooled, the state comes to 43.7%.
Which counties border Lincoln County?
Lincoln County borders 5 counties: Garrard County, Boyle County, Casey County, Rockcastle County and Pulaski County.
Products
Lincoln County, Products
Testing a home in Lincoln County
In Lincoln County, 35.6% of 135 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 Lincoln 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
Monitor
Wave Plus battery radon and air quality monitor
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- App only
Method: Alpha spectrometry
Short-term kitempowerDX
Standard Radon Test short-term mail-in radon test kit
- Lab fee included
Method: Passive sampler
In home: 48 to 96 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Lincoln County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Lincoln County
Explore
Lincoln County, Bordering counties
Counties bordering Lincoln County
Calculated by Radon411- Radon levels in Pulaski CountyEPA zone 1
59.5%at or above 4 pCi/L
Median 5.1 pCi/L · 395 tests · 23.9 points above Lincoln County
- Radon levels in Boyle CountyEPA zone 1
53.9%at or above 4 pCi/L
Median 4.4 pCi/L · 492 tests · 18.3 points above Lincoln County
- Radon levels in Rockcastle CountyEPA zone 2
42.9%at or above 4 pCi/L
Median 3.0 pCi/L · 14 tests · 7.3 points above Lincoln County
- Radon levels in Garrard CountyEPA zone 2
39.6%at or above 4 pCi/L
Median 2.6 pCi/L · 164 tests · 4.0 points above Lincoln County
- Radon levels in Casey CountyEPA zone 1
32.6%at or above 4 pCi/L
Median 3.1 pCi/L · 43 tests · 3.0 points below Lincoln County
Lincoln County, Cities and towns
Cities and towns in Lincoln County
The Census Bureau estimates 25,353 residents in Lincoln County for July 1, 2025, 1,104 more than in 2020 (+4.6%). That works out to 76 people per square mile of land. No town dominates: Stanford, the largest, has 3,761 residents, 14.8% of the total. CDC's 135 reported tests for 2008 to 2017 work out to 5.3 per 1,000 residents (2025 estimate), close to Kentucky's 6.3.
From Stanford to Eubank, CDC publishes no figure by town: each reads Lincoln County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Stanford | 3,761 | +3.1% | 14.8% |
| Junction Cityextends beyond Lincoln County | 2,346 | +3.1% | Counted whole |
| Crab Orchard | 767 | +3.1% | 3.0% |
| Hustonville | 400 | +3.4% | 1.6% |
| Eubankextends beyond Lincoln County | 338 | +7.6% | Counted whole |
5 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). A place that extends beyond Lincoln County is counted whole, so it has no share.
Lincoln County, Homes
Homes in Lincoln County
Of Lincoln County's 10,869 homes, 74% are detached houses, against 68% across Kentucky; 21% are mobile homes. Half of its homes were built before 1985, close to Kentucky's 1982: 18% date from before 1960 and 26% from 2000 or later. Owners live in 78% of the occupied homes (Kentucky: 68%), so for most households a test and a fix are their own to order.
| Homes | Lincoln County | Kentucky |
|---|---|---|
| Housing units | 10,869 | 2,010,655 |
| Detached houses | 74% | 68% |
| In buildings of 5 or more | 2% | 12% |
| Mobile homes | 21% | 11% |
| Built before 1960 | 18% | 22% |
| Built since 2000 | 26% | 24% |
| Middle year built | 1985 | 1982 |
| Owner-occupied | 78% | 68% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.