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Radon Levels in Arkansas County, Arkansas

EPA puts Arkansas County in Zone 3, its lowest radon zone, and only 1 radon test from it is 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, 63 miles

    Pulaski
    6.8%
    Arkansas
    22.7%

    Share at 4+ pCi/L, 103 tests, 2007 to 2016

  • Ground above low

    None

    21.3 pts below Arkansas

    Arkansas
    0.0%
    Arkansas
    21.3%

    Share of land USGS rates moderate or high potential

  • Tests reported

    1

    Too few for a share

    Arkansas
    1
    Needed
    30

    2008 to 2017, laboratory

  • 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 Arkansas 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

Arkansas County, At a glance

Arkansas County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Arkansas 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

Radon tests reported for Arkansas County, 2008 to 2017, laboratory

CDC holds 1 reported test for Arkansas County over the 2008 to 2017 laboratory totals, a result of 1.3 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Arkansas County beside the counties around it is how this page reads it.

What these figures count

Only 1 test was reported to CDC for Arkansas 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).

How to read these figures

Arkansas County, Compared

Arkansas County radon figures, compared

Calculated by Radon411

CDC's largest figure for Arkansas County rests on 1 test over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 100.0 points and no rank or comparison is drawn from it. Results reached as high as 1.3 pCi/L, with a middle value of 1.3 pCi/L.

The nearest counties with a figure are Pulaski County (63 miles away) at 6.8%, Saline County (78 miles away) at 31.9% and Garland County (103 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 Arkansas 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 Arkansas 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
Prairie County, ARborders it1100.0%4.5 pCi/L
Monroe County, ARborders it250.0%3.9 pCi/L
Lonoke County, ARborders it30.0%0.8 pCi/L
Jefferson County, ARborders it20.0%0.5 pCi/L
Phillips County, ARborders it10.0%0.1 pCi/L
The nearest Arkansas counties to Arkansas County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Pulaski County63 mi1036.8%0.9 pCi/L
Saline County78 mi4731.9%2.2 pCi/L
Garland County103 mi4845.8%2.9 pCi/L
Washington County199 mi5614.3%2.2 pCi/L
Benton County215 mi14531.0%1.8 pCi/L
Arkansas County ten-year laboratory totals, against Arkansas' pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestArkansas, pooledChange from the row before
2008 to 201710.0%1.3 pCi/L1.3 pCi/L23.2%Level
2007 to 201610.0%1.3 pCi/L1.3 pCi/L22.7%Level
2006 to 201510.0%1.3 pCi/L1.3 pCi/L22.5%Level
2005 to 201410.0%1.3 pCi/L1.3 pCi/L24.3%First on file

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

Arkansas County, Geology

The ground under Arkansas County

Predicted

USGS's geologic map puts all of Arkansas County's mapped land in one class: low radon potential. All of it lies in the area the map calls Mississippi Alluvial Plain, to which USGS gives a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under Arkansas County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Mississippi Alluvial PlainAlluvial sand, silt, gravel, and clay.Low8100%

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

Arkansas County beside the ground around it

Across Arkansas 21.3% of the land is rated moderate; none of Arkansas County's is. Of the 7 counties that border it, 1 has more moderate-potential ground, Phillips County the most at 3.2%.

Share of land by USGS radon potential: Arkansas County, the 7 counties bordering it and Arkansas
AreaEPA zoneLow potentialModerate potentialHigh potential
Arkansas CountyZone 3100%NoneNone
Lincoln CountyZone 3100%NoneNone
Monroe CountyZone 3100%NoneNone
Desha CountyZone 3100%NoneNone
Prairie CountyZone 3100%NoneNone
Jefferson CountyZone 3100%NoneNone
Phillips CountyZone 396.8%3.2%None
Lonoke 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

Arkansas County, Questions

Questions about radon in Arkansas County

Are radon levels high in Arkansas County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Arkansas County, Arkansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.3 pCi/L. Of the 5 nearest counties with a figure, within 215 miles, the share of tests at or above 4 pCi/L runs from 6.8% to 45.8%.

Which counties border Arkansas County?

Arkansas County borders 7 counties: Lincoln County, Monroe County, Desha County, Prairie County, Jefferson County, Phillips County and Lonoke County.

Products

Arkansas County, Products

Testing a home in Arkansas County

No CDC figure names Arkansas County; the nearest county with one, Pulaski County (63 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. 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 Arkansas County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Arkansas County homes, compared

Explore

Arkansas County, Bordering counties

Counties bordering Arkansas County

Calculated by Radon411

Arkansas County, Cities and towns

Cities and towns in Arkansas County

Arkansas County has been losing residents: from 17,106 in 2020 to 15,836 on July 1, 2025, a fall of 7.4% by the Census Bureau's estimates. That works out to 16 people per square mile of land. Its largest town, Stuttgart, has 7,525 residents, 47.5% of the total. Reported testing is thin here: 1 test over 2008 to 2017, or 0.1 for every 1,000 residents (2025 estimate), where Arkansas as a whole comes to 0.2.

From Stuttgart to St. Charles, CDC publishes no figure by town: each reads Arkansas County's.

The cities and towns in Arkansas County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Stuttgart7,525−8.7%47.5%
DeWitt2,791−8.1%17.6%
Gillett619+9.0%3.9%
Humphreyextends beyond Arkansas County430−6.9%Counted whole
Almyra237−7.4%1.5%
St. Charles191−6.8%1.2%

6 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 Arkansas County is counted whole, so it has no share.

Arkansas County, Homes

Homes in Arkansas County

Of Arkansas County's 8,697 homes, 74% are detached houses, against 70% across Arkansas; 14% are mobile homes. The homes are older than Arkansas' as a whole: half were built before 1976 (1987 for Arkansas), and 24% date from before 1960. 67% 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 Arkansas County, Arkansas, 2019 to 2023
HomesArkansas CountyArkansas
Housing units8,6971,382,664
Detached houses74%70%
In buildings of 5 or more7%10%
Mobile homes14%11%
Built before 196024%14%
Built since 200016%28%
Middle year built19761987
Owner-occupied67%66%

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