Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Lee County, Arkansas
EPA puts Lee 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, 87 miles
- Pulaski
- 6.8%
- Arkansas
- 22.7%
Share at 4+ pCi/L, 103 tests, 2007 to 2016
Ground above low
2.4%
18.9 pts below Arkansas
- Lee
- 2.4%
- 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
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Lee 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
Lee County, At a glance
Lee County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 98% 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 Lee County. Pulaski County, 87 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.
Lee County, Compared
Lee County radon figures, compared
Calculated by Radon411Lee County has no radon test figure of its own from CDC, whose counts over the 2007 to 2016 laboratory totals name 60 other Arkansas counties and leave it out. 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 (87 miles away) at 6.8%, Saline County (108 miles away) at 31.9% and Garland County (136 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 Lee County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 98% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Lee County, Geology
The ground under Lee County
PredictedMost of the ground under Lee County is one class on USGS's geologic map: 97.6% of its land is low radon potential, with 2.4% moderate. 97.6% 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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Mississippi Alluvial Plain | Alluvial sand, silt, gravel, and clay. | Low | 8 | 97.6% |
| Crowley's Ridge | Loess. | Moderate | 9 | 2.4% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Lee County beside the ground around it
Arkansas as a whole has more moderate-potential ground than Lee County: 21.3% of its land, against 2.4% here. Of the 5 counties that border it, 2 have more moderate-potential ground, St. Francis County the most at 10.3%.
The map rates the ground, not the air in any home.
Local help
Lee County, Local resources
Radon testing and mitigation in Lee 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
Lee County, Questions
Questions about radon in Lee County
Are radon levels high in Lee County?
No CDC testing statistics are published here for Lee County, Arkansas yet. Of the 5 nearest counties with a figure, within 223 miles, the share of tests at or above 4 pCi/L runs from 6.8% to 45.8%.
Which counties border Lee County?
Lee County borders 5 counties: St. Francis County, AR, Monroe County, AR, Phillips County, AR, Tunica County, MS and Crittenden County, AR.
Products
Lee County, Products
Testing a home in Lee County
No CDC figure names Lee County; the nearest county with one, Pulaski County (87 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 Lee County.
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
Wave Plus battery radon and air quality monitor
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- App only
Method: Alpha spectrometry
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Lee County, Bordering counties
Counties bordering Lee County
Calculated by Radon411- Radon levels in Monroe County, AREPA zone 3
50.0%at or above 4 pCi/L
Median 3.9 pCi/L · 2 tests
- Radon levels in Phillips County, AREPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 1 test
- Radon levels in Crittenden County, AREPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 1 test
- Radon levels in St. Francis County, AREPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Tunica County, MSEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Lee County, Cities and towns
Cities and towns in Lee County
Lee County has been losing residents: from 8,582 in 2020 to 8,029 on July 1, 2025, a fall of 6.4% by the Census Bureau's estimates. That works out to 13 people per square mile of land. Its largest town, Marianna, has 3,253 residents, 40.5% of the total. Together its 6 incorporated places hold 47.5% of those residents; the other 52.5% live outside any of them. CDC publishes no radon test count for Lee County; across Arkansas its counts for 2007 to 2016 come to 0.2 tests for every 1,000 residents (2025 estimate).
From Marianna to LaGrange, CDC publishes no figure by town: each reads Lee County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Marianna | 3,253 | −9.4% | 40.5% |
| Moro | 160 | −8.0% | 2.0% |
| Rondo | 148 | −7.5% | 1.8% |
| Haynes | 110 | −9.1% | 1.4% |
| Aubrey | 98 | −7.5% | 1.2% |
| LaGrange | 45 | −10.0% | 0.6% |
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).
Lee County, Homes
Homes in Lee County
Of Lee County's 3,707 homes, 73% are detached houses, against 70% across Arkansas; 9% are mobile homes. The homes are older than Arkansas' as a whole: half were built before 1971 (1987 for Arkansas), and 25% date from before 1960. 61% 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 | Lee County | Arkansas |
|---|---|---|
| Housing units | 3,707 | 1,382,664 |
| Detached houses | 73% | 70% |
| In buildings of 5 or more | 4% | 10% |
| Mobile homes | 9% | 11% |
| Built before 1960 | 25% | 14% |
| Built since 2000 | 10% | 28% |
| Middle year built | 1971 | 1987 |
| Owner-occupied | 61% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.