Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
Locations and reports
Radon Levels in Sharp County, Arkansas
EPA puts Sharp County in Zone 2, its middle radon zone, and only 5 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
Nearest county
6.8%
Pulaski County, 107 miles
- Pulaski
- 6.8%
- Arkansas
- 22.7%
Share at 4+ pCi/L, 103 tests, 2007 to 2016
Ground above low
100.0%
78.7 pts above Arkansas
- Sharp
- 100.0%
- Arkansas
- 21.3%
Share of land USGS rates moderate or high potential
Tests reported
9
Too few for a share
- Sharp
- 9
- 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 Sharp 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
Sharp County, At a glance
Sharp County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Sharp County is a
USGS geologic potential: Moderate across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Sharp County, 2008 to 2017, laboratory
CDC holds 5 reported tests for Sharp County over the 2008 to 2017 laboratory totals, with a median of 1.8 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Sharp County beside the counties around it is how this page reads it.
What these figures count
Only 5 tests were reported to CDC for Sharp 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).
Sharp County, Compared
Sharp County radon figures, compared
Calculated by Radon411CDC's largest figure for Sharp County rests on 9 tests over the 2007 to 2016 laboratory totals, 4 of them at or above 4 pCi/L, so each test moves its share by 11.1 points and no rank or comparison is drawn from it. Results reached as high as 8.4 pCi/L, with a middle value of 2.9 pCi/L.
The nearest counties with a figure are Pulaski County (107 miles away) at 6.8%, Saline County (124 miles away) at 31.9% and Garland County (144 miles away) at 45.8%. 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 Sharp County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Sharp County, Geology
The ground under Sharp County
PredictedUSGS's geologic map puts all of Sharp County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Salem Plateau, to which USGS gives 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 |
|---|---|---|---|---|
| Salem Plateau | Ordovician dolomite. | Moderate | 9 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Sharp County beside the ground around it
Sharp County has more moderate-potential ground than Arkansas as a whole: 100% of its land against 21.3%. Of the 6 counties that border it, none has as large a share of moderate-potential ground; Izard County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Sharp County, Local resources
Radon testing and mitigation in Sharp 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
Sharp County, Questions
Questions about radon in Sharp County
Are radon levels high in Sharp County?
Over the 2008 to 2017 laboratory totals, 20.0% of the radon tests reported to CDC for Sharp County, Arkansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.8 pCi/L. Of the 5 nearest counties with a figure, within 156 miles, the share of tests at or above 4 pCi/L runs from 6.8% to 45.8%.
Which counties border Sharp County?
Sharp County borders 6 counties: Fulton County, AR, Izard County, AR, Lawrence County, AR, Randolph County, AR, Independence County, AR and Oregon County, MO.
Products
Sharp County, Products
Testing a home in Sharp County
No CDC figure names Sharp County; the nearest county with one, Pulaski County (107 miles away), reported 6.8% 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 Sharp County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Monitor
View Plus radon and air quality monitor
- C-NRPP 2024/25: Approved
- Battery
- Wi-Fi, Bluetooth
- Screen, app
Method: Alpha spectrometry
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Sharp County, Bordering counties
Counties bordering Sharp County
Calculated by Radon411- Radon levels in Randolph County, AREPA zone 2
100.0%at or above 4 pCi/L
Median 4.9 pCi/L · 1 test
- Radon levels in Fulton County, AREPA zone 2
66.7%at or above 4 pCi/L
Median 9.6 pCi/L · 3 tests
- Radon levels in Oregon County, MOEPA zone 2
50.0%at or above 4 pCi/L
Median 4.8 pCi/L · 2 tests
- Radon levels in Independence County, AREPA zone 2
26.7%at or above 4 pCi/L
Median 2.4 pCi/L · 15 tests
- Radon levels in Izard County, AREPA zone 2
0.0%at or above 4 pCi/L
Median 1.1 pCi/L · 3 tests
- Radon levels in Lawrence County, AREPA zone 3
0.0%at or above 4 pCi/L
Median 1.9 pCi/L · 1 test
Sharp County, Cities and towns
Cities and towns in Sharp County
The Census Bureau estimates 18,122 residents in Sharp County for July 1, 2025, 809 more than in 2020 (+4.7%). That works out to 30 people per square mile of land. Cherokee Village, the largest place on its list (4,981 residents in all), extends beyond Sharp County, so no share of the total is worked out for it. Testing is reported here more often than across the state: CDC's 9 reported tests for 2007 to 2016 come to 0.5 for every 1,000 residents (2025 estimate), against 0.2 for Arkansas.
From Cherokee Village to Williford, CDC publishes no figure by town: each reads Sharp County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Cherokee Villageextends beyond Sharp County | 4,981 | +4.1% | Counted whole |
| Horseshoe Bendextends beyond Sharp County | 2,623 | +7.4% | Counted whole |
| Cave Cityextends beyond Sharp County | 1,987 | +3.4% | Counted whole |
| Ash Flatextends beyond Sharp County | 1,156 | +2.8% | Counted whole |
| Highland | 1,060 | +7.8% | 5.8% |
| Hardyextends beyond Sharp County | 780 | +4.0% | Counted whole |
| Evening Shade | 433 | +3.1% | 2.4% |
| Sidney | 203 | +4.6% | 1.1% |
| Williford | 85 | +6.3% | 0.5% |
9 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 Sharp County is counted whole, so it has no share.
Sharp County, Homes
Homes in Sharp County
Sharp County is a place of houses on their own lots: 82% of its 9,515 homes are detached single-family houses, against 70% across Arkansas. The homes are older than Arkansas' as a whole: half were built before 1978 (1987 for Arkansas), and 7% date from before 1960. Owners live in 80% of the occupied homes (Arkansas: 66%), so for most households a test and a fix are their own to order.
| Homes | Sharp County | Arkansas |
|---|---|---|
| Housing units | 9,515 | 1,382,664 |
| Detached houses | 82% | 70% |
| In buildings of 5 or more | 2% | 10% |
| Mobile homes | 12% | 11% |
| Built before 1960 | 7% | 14% |
| Built since 2000 | 14% | 28% |
| Middle year built | 1978 | 1987 |
| Owner-occupied | 80% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.