Short-term kit
PicoCan short-term charcoal canister radon test
- Lab fee included
Method: Charcoal
In home: 48 to 96 hours
Locations and reports
Radon Levels in Boone County, Arkansas
EPA puts Boone County in Zone 2, its middle radon zone, and only 22 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
34.7%
Taney County
- Taney
- 34.7%
1 of 5 neighbours have 30+ tests, 2007 to 2016
Nearest county
31.0%
Benton County, 65 miles
- Benton
- 31.0%
- Arkansas
- 22.7%
Share at 4+ pCi/L, 145 tests, 2007 to 2016
Ground above low
94.8%
73.5 pts above Arkansas
- Boone
- 94.8%
- Arkansas
- 21.3%
Share of land USGS rates moderate or high potential
Tests reported
23
Too few for a share
- Boone
- 23
- 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 Boone 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
Boone County, At a glance
Boone County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Boone County is a
USGS geologic potential: Moderate across 95% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Boone County, 2008 to 2017, laboratory
CDC holds 22 reported tests for Boone County over the 2008 to 2017 laboratory totals, with a median of 2.8 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Boone County beside the counties around it is how this page reads it.
What these figures count
Only 22 tests were reported to CDC for Boone 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).
Boone County, Compared
Boone County radon figures, compared
Calculated by Radon411CDC's largest figure for Boone County rests on 23 tests over the 2007 to 2016 laboratory totals, 8 of them at or above 4 pCi/L, so each test moves its share by 4.3 points and no rank or comparison is drawn from it. Results reached as high as 21.4 pCi/L, with a middle value of 3.3 pCi/L.
Taney County, MO, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 34.7% of its tests at or above 4 pCi/L. Farther out, Benton County (65 miles away) at 31.0%, Washington County (67 miles away) at 14.3% and Pulaski County (115 miles away) at 6.8% have figures too. Pooled across 60 Arkansas counties, 22.7% of reported tests reached that level; across every county in the country with a figure, 35.8%.
Statewide for the same period, Garland County reported the highest share (45.8%) and Pulaski County the lowest (6.8%). EPA's 1993 map puts Boone County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 95% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Boone County, Geology
The ground under Boone County
PredictedMost of the ground under Boone County is one class on USGS's geologic map: 94.8% of its land is moderate radon potential, with 5.2% low. The map puts 53.1% of Boone County in the area it calls Springfield Plateau and 41.5% in Salem Plateau, with one smaller area beside them. USGS gives both 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 |
|---|---|---|---|---|
| Springfield Plateau | Mississippian limestone, shale, and sandstone. | Moderate | 9 | 53.1% |
| Salem Plateau | Ordovician dolomite. | Moderate | 9 | 41.5% |
| Boston Mountains | Mississippian and Pennsylvanian sandstones and shales. | Low | 8 | 5.2% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Boone County beside the ground around it
Boone County has more moderate-potential ground than Arkansas as a whole: 94.8% of its land against 21.3%. Of the 5 counties that border it, 3 have more moderate-potential ground, Marion County the most at 100%.
The map rates the ground, not the air in any home.
Local help
Boone County, Local resources
Radon testing and mitigation in Boone County
- Arkansas's radon programArkansas Department of HealthArkansas's radon program answers questions about testing, mitigation and the rules in Arkansas.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
- See the Arkansas directoryNo professionals are listed in Arkansas yet. The state program can point you to registered testers and mitigators.
What Arkansas's program says
- Phone
- 501-661-2621
- ADH.EPI.Radon@arkansas.gov
What it means
Boone County, Questions
Questions about radon in Boone County
Are radon levels high in Boone County?
Over the 2008 to 2017 laboratory totals, 31.8% of the radon tests reported to CDC for Boone County, Arkansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.8 pCi/L. Taney County, MO, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 34.7% of its tests at or above 4 pCi/L.
Which counties border Boone County?
Boone County borders 5 counties: Marion County, AR, Taney County, MO, Carroll County, AR, Newton County, AR and Searcy County, AR.
Products
Boone County, Products
Testing a home in Boone County
No CDC figure names Boone County; the nearest county with one, Benton County (65 miles away), reported 31.0% of its tests at or above 4 pCi/L over the 2007 to 2016 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 Boone 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
RM-65 rechargeable radon detector with a color screen and alarm
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 6 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Boone County, Bordering counties
Counties bordering Boone County
Calculated by Radon411- Radon levels in Searcy County, AREPA zone 2
50.0%at or above 4 pCi/L
Median 3.5 pCi/L · 4 tests
- Radon levels in Taney County, MOEPA zone 2
34.7%at or above 4 pCi/L
Median 2.8 pCi/L · 144 tests
- Radon levels in Carroll County, AREPA zone 2
31.6%at or above 4 pCi/L
Median 2.0 pCi/L · 19 tests
- Radon levels in Marion County, AREPA zone 2
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 1 test
- Radon levels in Newton County, AREPA zone 3
0.0%at or above 4 pCi/L
Median 3.0 pCi/L · 1 test
Boone County, Cities and towns
Cities and towns in Boone County
The Census Bureau estimates 38,628 residents in Boone County for July 1, 2025, 1,242 more than in 2020 (+3.3%). That works out to 66 people per square mile of land. Its largest town, Harrison, has 13,802 residents, 35.7% of the total. Testing is reported here more often than across the state: CDC's 23 reported tests for 2007 to 2016 come to 0.6 for every 1,000 residents (2025 estimate), against 0.2 for Arkansas.
From Harrison to South Lead Hill, CDC publishes no figure by town: each reads Boone County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Harrison | 13,802 | +5.7% | 35.7% |
| Diamond City | 861 | +12.5% | 2.2% |
| Bergman | 422 | +1.0% | 1.1% |
| Bellefonte | 420 | +0.5% | 1.1% |
| Alpenaextends beyond Boone County | 388 | +2.4% | Counted whole |
| Lead Hill | 272 | +1.9% | 0.7% |
| Valley Springs | 180 | +1.1% | 0.5% |
| Omaha | 132 | +2.3% | 0.3% |
| Everton | 105 | +2.9% | 0.3% |
| Zinc | 87 | +3.6% | 0.2% |
| South Lead Hill | 81 | +3.8% | 0.2% |
11 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 Boone County is counted whole, so it has no share.
Boone County, Homes
Homes in Boone County
Boone County is a place of houses on their own lots: 77% of its 17,395 homes are detached single-family houses, against 70% across Arkansas. Half of its homes were built before 1984, close to Arkansas' 1987: 14% date from before 1960 and 22% from 2000 or later. 70% of occupied homes are lived in by their owner (Arkansas: 66%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Boone County | Arkansas |
|---|---|---|
| Housing units | 17,395 | 1,382,664 |
| Detached houses | 77% | 70% |
| In buildings of 5 or more | 7% | 10% |
| Mobile homes | 9% | 11% |
| Built before 1960 | 14% | 14% |
| Built since 2000 | 22% | 28% |
| Middle year built | 1984 | 1987 |
| Owner-occupied | 70% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.