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Radon Levels in Lincoln County, Arkansas

EPA puts Lincoln 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

    6.8%

    Pulaski County, 65 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

    Lincoln
    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 Lincoln 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

Lincoln County, At a glance

Lincoln County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Lincoln 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 Lincoln County. Pulaski County, 65 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.

How to read these figures

Lincoln County, Compared

Lincoln County radon figures, compared

Calculated by Radon411

No CDC figure names Lincoln County, in any year or ten-year total; over the 2007 to 2016 laboratory totals, the agency's counts reach 60 Arkansas counties without 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 Pulaski County (65 miles away) at 6.8%, Saline County (72 miles away) at 31.9% and Garland County (92 miles away) at 45.8%. 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 Lincoln 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 Lincoln 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
Cleveland County, ARborders it30.0%0.1 pCi/L
Drew County, ARborders it10.0%0.1 pCi/L
Jefferson County, ARborders it20.0%0.5 pCi/L
Arkansas County, ARborders it10.0%1.3 pCi/L
The nearest Arkansas counties to Lincoln County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Pulaski County65 mi1036.8%0.9 pCi/L
Saline County72 mi4731.9%2.2 pCi/L
Garland County92 mi4845.8%2.9 pCi/L
Washington County198 mi5614.3%2.2 pCi/L
Benton County218 mi14531.0%1.8 pCi/L

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

Lincoln County, Geology

The ground under Lincoln County

Predicted

USGS's geologic map puts all of Lincoln County's mapped land in one class: low radon potential. The map puts 63.3% of Lincoln County in the area it calls Mississippi Alluvial Plain and 36.7% in West Gulf Coastal Plain. USGS gives the first a radon index of 8 and the second 7, both in the low band (5 to 8).

USGS's geologic areas under Lincoln County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Mississippi Alluvial PlainAlluvial sand, silt, gravel, and clay.Low863.3%
West Gulf Coastal PlainGlauconitic, phosphatic, and carbonaceous sediments.Low736.7%

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

Lincoln County beside the ground around it

Across Arkansas 21.3% of the land is rated moderate; none of Lincoln County's is. None of the 5 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Lincoln County, the 5 counties bordering it and Arkansas
AreaEPA zoneLow potentialModerate potentialHigh potential
Lincoln CountyZone 3100%NoneNone
Drew CountyZone 3100%NoneNone
Desha CountyZone 3100%NoneNone
Arkansas CountyZone 3100%NoneNone
Cleveland CountyZone 3100%NoneNone
Jefferson 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

Lincoln County, Questions

Questions about radon in Lincoln County

Are radon levels high in Lincoln County?

No CDC testing statistics are published here for Lincoln County, Arkansas yet. Of the 5 nearest counties with a figure, within 218 miles, the share of tests at or above 4 pCi/L runs from 6.8% to 45.8%.

Which counties border Lincoln County?

Lincoln County borders 5 counties: Drew County, Desha County, Arkansas County, Cleveland County and Jefferson County.

Products

Lincoln County, Products

Testing a home in Lincoln County

No CDC figure names Lincoln County; the nearest county with one, Pulaski County (65 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 Lincoln County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Lincoln County homes, compared

Explore

Lincoln County, Bordering counties

Counties bordering Lincoln County

Calculated by Radon411

Lincoln County, Cities and towns

Cities and towns in Lincoln County

About 12,764 people live in Lincoln County by the Census Bureau's estimate for July 1, 2025, 129 fewer than in 2020 (−1.0%). That works out to 23 people per square mile of land. No town dominates: Star City, the largest, has 2,059 residents, 16.1% of the total. Together its 3 incorporated places hold 23.2% of those residents; the other 76.8% live outside any of them. CDC publishes no radon test count for Lincoln County; across Arkansas its counts for 2007 to 2016 come to 0.2 tests for every 1,000 residents (2025 estimate).

From Star City to Grady, CDC publishes no figure by town: each reads Lincoln County's.

The cities and towns in Lincoln County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Star City2,059−4.5%16.1%
Gould621−5.8%4.9%
Grady283−6.3%2.2%

3 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).

Lincoln County, Homes

Homes in Lincoln County

Of Lincoln County's 4,398 homes, 65% are detached houses, against 70% across Arkansas; 32% are mobile homes. Half of its homes were built before 1985, close to Arkansas' 1987: 18% date from before 1960 and 22% from 2000 or later. Owners live in 78% of the occupied homes (Arkansas: 66%), so for most households a test and a fix are their own to order.

Homes in Lincoln County, Arkansas, 2019 to 2023
HomesLincoln CountyArkansas
Housing units4,3981,382,664
Detached houses65%70%
In buildings of 5 or more1%10%
Mobile homes32%11%
Built before 196018%14%
Built since 200022%28%
Middle year built19851987
Owner-occupied78%66%

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