54%tests ≥ 4 pCi/L
492tests on record
4.4median pCi/L
Zone 1EPA zone (1993 prediction)

Test results in Boyle County

ResultShareEPA guidance
Below 2 pCi/L23%Below EPA's levels
2 to 4 pCi/L23%Consider fixing
4 pCi/L or more54%EPA recommends fixing

What the data shows

Where Boyle County sits among Kentucky's 120 counties with dataEach dot is a county's share of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017
0%20%40%60%

How Boyle County compares

Boyle County has the highest share of high results among its neighboursShare of tests at or above 4 pCi/L · Radon test results from laboratories, 2008–2017 · whisker: 95% range
Boyle County54%Marion County49%Garrard County40%Mercer County38%Lincoln County36%Casey County33%Washington County27%Kentucky 44%
Data table
AreaTests ≥ 4 pCi/LTests
Boyle County54%492
Marion County49%177
Garrard County40%164
Mercer County38%288
Lincoln County36%135
Casey County33%43
Washington County27%44
Kentucky (120 counties)44%28,793

Same source as Boyle County.

What it means for your home

More than half of all results in Boyle County were at or above 4 pCi/L, where the EPA recommends a fix. Only a test shows your own home's level.

Levels in pCi/L from the EPA. The WHO reference level is 100 Bq/m³, about 2.7 pCi/L.

Test your home

Start with a short-term test (2–90 days) and confirm a result of 4 pCi/L or more with a second test. EPA guide

Sponsored: we earn a commission on purchases through these links. We haven't tested Airthings monitors yet.

Prefer a digital monitor? See Airthings radon monitors, or enter code radonbycounty-10OFF at their discount store for 10% off.

Fixing high radon

No local job records yet. National range: $800–$2,500, average $1,200 (EPA, 2003). Cost guide →

About this data

Source: Radon test results from laboratories (CDC Environmental Public Health Tracking Network). Period: 2008–2017. Tests: 492. Read the methodology →

These are voluntary and real-estate tests, not a random sample of homes, so they describe tested homes rather than every home.

About this page

Published by Ray Roman, editor of Radon by County. Figures are loaded from the cited source and spot-checked against it. Editorial policy · About us