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Radon Levels in Crittenden County, Arkansas

EPA puts Crittenden 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

  • Highest bordering

    7.0%

    Shelby County

    Shelby
    7.0%
    Tipton
    4.5%

    2 of 9 neighbours have 30+ tests, 2007 to 2016

  • Nearest county

    6.8%

    Pulaski County, 118 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

    Crittenden
    0.0%
    Arkansas
    21.3%

    Share of land USGS rates moderate or high potential

  • Tests reported

    1

    Too few for a share

    Crittenden
    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 Crittenden 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

Crittenden County, At a glance

Crittenden County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Crittenden 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 Crittenden County, 2008 to 2017, laboratory

CDC holds 1 reported test for Crittenden County over the 2008 to 2017 laboratory totals, a result of 0.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Crittenden County beside the counties around it is how this page reads it.

What these figures count

Only 1 test was reported to CDC for Crittenden 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

Crittenden County, Compared

Crittenden County radon figures, compared

Calculated by Radon411

CDC's largest figure for Crittenden 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 0.1 pCi/L, with a middle value of 0.1 pCi/L.

Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Shelby County, TN reported the largest share at or above 4 pCi/L, 7.0%, and Tipton County, TN the smallest, 4.5%. Farther out, Pulaski County (118 miles away) at 6.8%, Saline County (140 miles away) at 31.9% and Garland County (167 miles away) at 45.8% 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 Crittenden 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 Crittenden 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
Mississippi County, ARborders it560.0%9.5 pCi/L
Shelby County, TNborders it3447.0%1.0 pCi/L
Tipton County, TNborders it894.5%1.0 pCi/L
The nearest Arkansas counties to Crittenden County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Pulaski County118 mi1036.8%0.9 pCi/L
Saline County140 mi4731.9%2.2 pCi/L
Garland County167 mi4845.8%2.9 pCi/L
Washington County226 mi5614.3%2.2 pCi/L
Benton County235 mi14531.0%1.8 pCi/L
Crittenden County ten-year laboratory totals, against Arkansas' pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestArkansas, pooledChange from the row before
2008 to 201710.0%0.1 pCi/L0.1 pCi/L23.2%Level
2007 to 201610.0%0.1 pCi/L0.1 pCi/L22.7%Level
2006 to 201510.0%0.1 pCi/L0.1 pCi/L22.5%Level
2005 to 201410.0%0.1 pCi/L0.1 pCi/L24.3%First on file

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

Crittenden County, Geology

The ground under Crittenden County

Predicted

USGS's geologic map puts all of Crittenden County's mapped land in one class: low radon potential. 99.4% 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 Crittenden County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Mississippi Alluvial PlainAlluvial sand, silt, gravel, and clay.Low899.4%
Mississippi Alluvial PlainAlluvial sand, silt, gravel, and clay.Low70.6%

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

Crittenden County beside the ground around it

Across Arkansas 21.3% of the land is rated moderate; none of Crittenden County's is. Of the 9 counties that border it, 4 have more moderate-potential ground, Cross County the most at 17.7%.

Share of land by USGS radon potential: Crittenden County, the 9 counties bordering it and Arkansas
AreaEPA zoneLow potentialModerate potentialHigh potential
Crittenden CountyZone 3100%NoneNone
Shelby County, TNZone 3100%NoneNone
DeSoto County, MSZone 3100%NoneNone
St. Francis CountyZone 389.7%10.3%None
Cross CountyZone 382.3%17.7%None
Tunica County, MSZone 3100%NoneNone
Tipton County, TNZone 3100%NoneNone
Poinsett CountyZone 392.4%7.6%None
Mississippi CountyZone 3100%NoneNone
Lee CountyZone 397.6%2.4%None
Arkansas75 counties, pooled by land areaVaries78.7%21.3%None

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

What it means

Crittenden County, Questions

Questions about radon in Crittenden County

Are radon levels high in Crittenden County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Crittenden County, Arkansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.1 pCi/L. Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Shelby County, TN reported the largest share at or above 4 pCi/L, 7.0%, and Tipton County, TN the smallest, 4.5%.

Which counties border Crittenden County?

Crittenden County borders 9 counties: Shelby County, TN, DeSoto County, MS, St. Francis County, AR, Cross County, AR, Tunica County, MS, Tipton County, TN, Poinsett County, AR, Mississippi County, AR and Lee County, AR.

Products

Crittenden County, Products

Testing a home in Crittenden County

No CDC figure names Crittenden County; the nearest county with one, Pulaski County (118 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 Crittenden County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Crittenden County homes, compared

Explore

Crittenden County, Bordering counties

Counties bordering Crittenden County

Calculated by Radon411

Crittenden County, Cities and towns

Cities and towns in Crittenden County

About 46,210 people live in Crittenden County by the Census Bureau's estimate for July 1, 2025, 1,866 fewer than in 2020 (−3.9%). That works out to 75 people per square mile of land. West Memphis alone is home to 23,336 of them, 50.5% of the total. Reported testing is thin here: 1 test over 2008 to 2017, or under 0.1 for every 1,000 residents (2025 estimate), where Arkansas as a whole comes to 0.2.

From West Memphis to Jericho, CDC publishes no figure by town: each reads Crittenden County's.

The 12 largest cities and towns in Crittenden County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
West Memphis23,336−4.6%50.5%
Marion13,378−2.8%29.0%
Earle1,721−5.8%3.7%
Turrell488−5.8%1.1%
Crawfordsville443−3.5%1.0%
Clarkedale326−4.1%0.7%
Horseshoe Lake251−3.8%0.5%
Edmondson240−4.4%0.5%
Gilmore172Level0.4%
Sunset161−5.8%0.3%
Anthonyville126−4.5%0.3%
Jennetteextends beyond Crittenden County113−4.2%Counted whole
  • Jericho

13 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. “(part)” marks a place that extends into another county. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025). A place that extends beyond Crittenden County is counted whole, so it has no share.

Crittenden County, Homes

Homes in Crittenden County

Of Crittenden County's 21,367 homes, 71% are detached houses, against 70% across Arkansas; 16% are in buildings of five or more homes. Half of its homes were built before 1983, close to Arkansas' 1987: 14% date from before 1960 and 24% from 2000 or later. 57% 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 Crittenden County, Arkansas, 2019 to 2023
HomesCrittenden CountyArkansas
Housing units21,3671,382,664
Detached houses71%70%
In buildings of 5 or more16%10%
Mobile homes6%11%
Built before 196014%14%
Built since 200024%28%
Middle year built19831987
Owner-occupied57%66%

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