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Radon Levels in Scott County, Arkansas

EPA puts Scott County in Zone 3, its lowest radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Nearest county

    45.8%

    Garland County, 56 miles

    Garland
    45.8%
    Arkansas
    22.7%

    Share at 4+ pCi/L, 48 tests, 2007 to 2016

  • Ground above low

    None

    21.3 pts below Arkansas

    Scott
    0.0%
    Arkansas
    21.3%

    Share of land USGS rates moderate or high potential

  • Tests reported

    0

    None published

    A home here needs its own test

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

Read a result for Scott County

Starts at EPA's action level

4.0pCi/L

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

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 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

Scott County, At a glance

Scott County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Scott County as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

USGS geologic potential: Low across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

No CDC test figures here

CDC has published no radon test figures for Scott County. Garland County, 56 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.

How to read these figures

Scott County, Compared

Scott County radon figures, compared

Calculated by Radon411

CDC's county radon counts over the 2007 to 2016 laboratory totals cover 60 Arkansas counties, and Scott County is not among them: no year's figure and no ten-year laboratory total names it. Pooled across 60 Arkansas counties, 22.7% of reported tests reached that level; across every county in the country with a figure, 35.8%.

The nearest counties with a figure are Garland County (56 miles away) at 45.8%, Washington County (78 miles away) at 14.3% and Saline County (80 miles away) at 31.9%. 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 Scott County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.

Arkansas, the United States and the counties around Scott County, 2007 to 2016, laboratory
AreaTestsAt or above 4 pCi/LMedian
Arkansas, pooled60 counties, pooled68722.7%Not pooled
United States, pooled2,666 counties, pooled1,939,02535.8%Not pooled
Garland Countyhighest in the state4845.8%2.9 pCi/L
Pulaski Countylowest in the state1036.8%0.9 pCi/L
Logan County, ARborders it520.0%2.1 pCi/L
Sebastian County, ARborders it293.4%0.1 pCi/L
Montgomery County, ARborders it10.0%0.6 pCi/L
Polk County, ARborders it10.0%2.2 pCi/L
Yell County, ARborders it20.0%0.5 pCi/L
Le Flore County, OKborders it90.0%0.8 pCi/L
The nearest Arkansas counties to Scott County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Garland County56 mi4845.8%2.9 pCi/L
Washington County78 mi5614.3%2.2 pCi/L
Saline County80 mi4731.9%2.2 pCi/L
Pulaski County100 mi1036.8%0.9 pCi/L
Benton County102 mi14531.0%1.8 pCi/L

Pooled shares: Radon411's sum of CDC's county counts for one period.

Scott County, Geology

The ground under Scott County

Predicted

USGS's geologic map puts all of Scott County's mapped land in one class: low radon potential. The map puts 85.7% of Scott County in the area it calls Athens Plateau/Fourche Mountains and 14.2% in Arkansas Valley. USGS gives both a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under Scott County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Athens Plateau/Fourche MountainsMississippian and Pennsylvanian sandstones and shales.Low885.7%
Arkansas ValleyMississippian and Pennsylvanian sandstones and shales.Low814.2%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Scott County beside the ground around it

Across Arkansas 21.3% of the land is rated moderate; none of Scott County's is. Of the 6 counties that border it, 2 have more moderate-potential ground, Montgomery County the most at 72.4%.

Share of land by USGS radon potential: Scott County, the 6 counties bordering it and Arkansas
AreaEPA zoneLow potentialModerate potentialHigh potential
Scott CountyZone 3100%NoneNone
Sebastian CountyZone 3100%NoneNone
Polk CountyZone 374.6%25.4%None
Montgomery CountyZone 227.6%72.4%None
Logan CountyZone 3100%NoneNone
Le Flore County, OKZone 3100%NoneNone
Yell CountyZone 3100%NoneNone
Arkansas75 counties, pooled by land areaVaries78.7%21.3%None

The map rates the ground, not the air in any home.

What it means

Scott County, Questions

Questions about radon in Scott County

Are radon levels high in Scott County?

No CDC testing statistics are published here for Scott County, Arkansas yet. Of the 5 nearest counties with a figure, within 102 miles, the share of tests at or above 4 pCi/L runs from 6.8% to 45.8%.

Which counties border Scott County?

Scott County borders 6 counties: Sebastian County, AR, Polk County, AR, Montgomery County, AR, Logan County, AR, Le Flore County, OK and Yell County, AR.

Products

Scott County, Products

Testing a home in Scott County

No CDC figure names Scott County; the nearest county with one, Garland County (56 miles away), reported 45.8% 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. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Scott County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Scott County homes, compared

Explore

Scott County, Bordering counties

Counties bordering Scott County

Calculated by Radon411

Scott County, Cities and towns

Cities and towns in Scott County

The Census Bureau estimates 9,965 residents in Scott County for July 1, 2025, 137 more than in 2020 (+1.4%). That works out to 11 people per square mile of land. Its largest town, Waldron, has 3,387 residents, 34.0% of the total. CDC publishes no radon test count for Scott County; across Arkansas its counts for 2007 to 2016 come to 0.2 tests for every 1,000 residents (2025 estimate).

From Waldron to Mansfield, CDC publishes no figure by town: each reads Scott County's.

The cities and towns in Scott County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Waldron3,387+0.2%34.0%
Mansfieldextends beyond Scott County1,066+1.8%Counted whole

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). A place that extends beyond Scott County is counted whole, so it has no share.

Scott County, Homes

Homes in Scott County

Of Scott County's 4,873 homes, 74% are detached houses, against 70% across Arkansas; 17% are mobile homes. The homes are older than Arkansas' as a whole: half were built before 1979 (1987 for Arkansas), and 20% date from before 1960. 74% 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 in Scott County, Arkansas, 2019 to 2023
HomesScott CountyArkansas
Housing units4,8731,382,664
Detached houses74%70%
In buildings of 5 or more3%10%
Mobile homes17%11%
Built before 196020%14%
Built since 200020%28%
Middle year built19791987
Owner-occupied74%66%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.