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
Locations and reports
Radon Levels in Woodford County, Kentucky
EPA puts Woodford County in Zone 1, its highest radon zone, and high results are common there: 57.9% of the 342 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
57.9%
14.2 pts above KY
- Woodford
- 57.9%
- Kentucky
- 43.7%
342 tests, 2008 to 2017
Median result
4.9pCi/L
Action level reached
- Woodford
- 4.9 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
342
17th of 69 by tests
- Woodford
- 342
- 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
7 of 69
Top quarter
- Woodford
- 57.9%
- Meade
- 68.4%
By share, of 69 with 30+ tests
Read a result for Woodford County
Starts at Woodford County's median, 4.9 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.9 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. Woodford County's median reported result, 2008 to 2017.
The data
Woodford County, At a glance
Woodford County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Woodford County in
USGS geologic potential: High across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Woodford County, 2008 to 2017, laboratory
Under 2 pCi/L: 25%2 to 4 pCi/L: 17%4 pCi/L and above: 58%
Of 342 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 87 | 25.4% |
| 2 to 4 pCi/L | 57 | 16.7% |
| 4 pCi/L and above | 198 | 57.9% |
What these figures count
These are the 342 tests reported to CDC for Woodford 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).
Woodford County, Compared
Woodford County radon figures, compared
Calculated by Radon411More than half: 57.9% of the 342 radon tests reported to CDC for Woodford County over the 2008 to 2017 laboratory totals read at least 4 pCi/L. That places it 7th of 69 Kentucky counties with 30 or more tests for the same period. That is 14.2 points above the 43.7% pooled from 120 Kentucky counties.
The median result, 4.9 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 183.6 pCi/L. The rest split 25.4% under 2 pCi/L and 16.7% from 2 to 4 (Kentucky: 33.2% and 23.1%). Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 57.9% share point the same way here.
No bordering county with a figure for the same period reported a higher share; the closest is Jessamine County at 55.5%, the lowest Anderson County at 25.2%. Statewide for the same period, Meade County reported the highest share (68.4%) and Hopkins County the lowest (9.5%).
CDC's ten-year totals for Woodford County went from 227 tests (2005 to 2014) to 342 (2008 to 2017), the share going from 59.9% to 57.9%.
Nationally, every county with a figure for the same period pools to 35.7%; Woodford County sits 22.2 points above it. CDC also counts 52 tests taken after mitigation in Woodford County for the same period: tests in homes where a fix was already in.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Woodford County, Geology
The ground under Woodford County
PredictedUSGS's geologic map puts all of Woodford County's mapped land in one class: high radon potential. All of it lies in the area the map calls Inner Bluegrass, to which USGS gives a radon index of 13, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Inner Bluegrass | Ordovician limestones, dolomites and shales. | High | 13 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Woodford County beside the ground around it
Woodford County has more high-potential ground than Kentucky as a whole: 100% of its land against 18.2%. Of the 6 counties that border it, none has as large a share of high-potential ground; Jessamine County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Woodford County, Local resources
Radon testing and mitigation in Woodford 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
Woodford County, Questions
Questions about radon in Woodford County
Are radon levels high in Woodford County?
Over the 2008 to 2017 laboratory totals, 57.9% of the radon tests reported to CDC for Woodford County, Kentucky were at or above 4 pCi/L, and the median reported pre-mitigation result was 4.9 pCi/L. Of 69 Kentucky counties with 30 or more tests for the same period, 6 reported a higher share; pooled, the state comes to 43.7%.
Which counties border Woodford County?
Woodford County borders 6 counties: Anderson County, Jessamine County, Mercer County, Fayette County, Franklin County and Scott County.
Products
Woodford County, Products
Testing a home in Woodford County
In Woodford County, 57.9% of 342 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 Woodford 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
MonitorAranet
Radon Plus battery digital radon monitor with an e-ink screen
- C-NRPP 2024/25: Approved
- Battery
- Bluetooth
- Alarm
- Screen, app
Method: Ion chamber
First reading: Within 10 minutes
Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Woodford County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Woodford County
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Woodford County, Bordering counties
Counties bordering Woodford County
Calculated by Radon411- Radon levels in Jessamine CountyEPA zone 1
55.5%at or above 4 pCi/L
Median 4.7 pCi/L · 789 tests · 2.4 points below Woodford County
- Radon levels in Fayette CountyEPA zone 1
54.5%at or above 4 pCi/L
Median 4.5 pCi/L · 5,263 tests · 3.4 points below Woodford County
- Radon levels in Scott CountyEPA zone 1
46.9%at or above 4 pCi/L
Median 3.6 pCi/L · 875 tests · 11.0 points below Woodford County
- Radon levels in Franklin CountyEPA zone 1
43.1%at or above 4 pCi/L
Median 3.3 pCi/L · 810 tests · 14.8 points below Woodford County
- Radon levels in Mercer CountyEPA zone 1
38.2%at or above 4 pCi/L
Median 2.7 pCi/L · 288 tests · 19.7 points below Woodford County
- Radon levels in Anderson CountyEPA zone 2
25.2%at or above 4 pCi/L
Median 2.2 pCi/L · 226 tests · 32.7 points below Woodford County
Woodford County, Cities and towns
Cities and towns in Woodford County
The Census Bureau estimates 27,883 residents in Woodford County for July 1, 2025, 983 more than in 2020 (+3.7%). That works out to 147 people per square mile of land. Its largest town, Versailles, has 10,734 residents, 38.5% of the total. Together its 2 incorporated places hold 44.9% of those residents; the other 55.1% live outside any of them. Testing is reported here more often than across the state: CDC's 342 reported tests for 2008 to 2017 come to 12.3 for every 1,000 residents (2025 estimate), against 6.3 for Kentucky.
From Versailles to Midway, CDC publishes no figure by town: each reads Woodford County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Versailles | 10,734 | +3.6% | 38.5% |
| Midway | 1,787 | +3.1% | 6.4% |
2 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).
Woodford County, Homes
Homes in Woodford County
Woodford County is a place of houses on their own lots: 82% of its 11,587 homes are detached single-family houses, against 68% across Kentucky. Half of its homes were built before 1984, close to Kentucky's 1982: 21% date from before 1960 and 20% from 2000 or later. 72% of occupied homes are lived in by their owner (Kentucky: 68%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Woodford County | Kentucky |
|---|---|---|
| Housing units | 11,587 | 2,010,655 |
| Detached houses | 82% | 68% |
| In buildings of 5 or more | 4% | 12% |
| Mobile homes | 2% | 11% |
| Built before 1960 | 21% | 22% |
| Built since 2000 | 20% | 24% |
| Middle year built | 1984 | 1982 |
| Owner-occupied | 72% | 68% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.