Skip to content

Locations and reports

Radon Levels in Lee County, Mississippi

EPA puts Lee County in Zone 2, its middle radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Nearest county

    18.6%

    Franklin County, 49 miles

    Franklin
    18.6%

    Share at 4+ pCi/L, 210 tests, 2006 to 2015

  • Ground above low

    97.6%

    89.5 pts above MS

    Lee
    97.6%
    MS
    8.1%

    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 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

Read a result for Lee 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

Lee County, At a glance

Lee County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Lee County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

USGS geologic potential: Moderate 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. Franklin County, AL, 49 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.

How to read these figures

Lee County, Compared

Lee County radon figures, compared

Calculated by Radon411

No Mississippi county, Lee County included, has a radon test figure from CDC; over the 2006 to 2015 laboratory totals, the agency's counts name 2,669 counties in other states. Across every county in the country with a figure (2,669), 36.3% of reported tests reached that level; no Mississippi county contributes to that pool.

The nearest counties with a figure are Franklin County, AL (49 miles away) at 18.6%, Colbert County, AL (57 miles away) at 36.6% and McNairy County, TN (61 miles away) at 8.2%.

EPA's 1993 map puts Lee County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 98% of the county's land moderate radon potential.

The United States and the counties around Lee County, 2006 to 2015, laboratory
AreaTestsAt or above 4 pCi/LMedian
United States, pooled2,669 counties, pooled1,805,52836.3%Not pooled
The nearest counties to Lee County with 30 or more tests, in any state, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Franklin County, AL49 mi21018.6%1.4 pCi/L
Colbert County, AL57 mi97836.6%2.7 pCi/L
McNairy County, TN61 mi498.2%1.0 pCi/L
Lauderdale County, AL72 mi2,02827.1%2.1 pCi/L
Fayette County, TN75 mi8413.1%1.2 pCi/L
Chester County, TN78 mi390.0%0.9 pCi/L
Lawrence County, AL80 mi17514.9%1.7 pCi/L
Madison County, TN91 mi885.7%1.1 pCi/L

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

Lee County, Geology

The ground under Lee County

Predicted

Most of the ground under Lee County is one class on USGS's geologic map: 97.6% of its land is moderate radon potential, with 2.4% low. 97.6% of it lies in the area the map calls Pontotoc Ridge/Black Prairies, to which USGS gives a radon index of 9, in the moderate band (9 to 11).

USGS's geologic areas under Lee County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Pontotoc Ridge/Black PrairiesGlauconitic sand, clay, sandy limestone, micaceous chalk, and lime.Moderate997.6%
Tombigbee HillsClay, sand, sandstone, chalk, chalky marl, quartzose, chert gravels, and quartz sand.Low82.4%

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

Across Mississippi 0.1% of the land is rated high; none of Lee County's is. Of the 6 counties that border it, none has as large a share of moderate-potential ground; Prentiss County comes nearest at 74.5%.

Share of land by USGS radon potential: Lee County, the 6 counties bordering it and Mississippi
AreaEPA zoneLow potentialModerate potentialHigh potential
Lee CountyZone 22.4%97.6%None
Itawamba CountyZone 396.9%3.1%None
Pontotoc CountyZone 256.9%43.1%None
Monroe CountyZone 372.0%28.0%None
Chickasaw CountyZone 236.7%63.3%None
Union CountyZone 246.6%53.4%None
Prentiss CountyZone 325.5%74.5%None
Mississippi82 counties, pooled by land areaVaries91.8%8.0%0.1%

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

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, Mississippi yet. Of the 8 nearest counties with a figure, within 91 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 36.6%.

Which counties border Lee County?

Lee County borders 6 counties: Itawamba County, Pontotoc County, Monroe County, Chickasaw County, Union County and Prentiss County.

Products

Lee County, Products

Testing a home in Lee County

No CDC figure names Lee County; the nearest county with one, Franklin County, AL (49 miles away), reported 18.6% of its tests at or above 4 pCi/L over the 2006 to 2015 laboratory totals, the only reading nearby until a test of this home. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Lee County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Lee County homes, compared

Explore

Lee County, Bordering counties

Counties bordering Lee County

Calculated by Radon411

Lee County, Cities and towns

Cities and towns in Lee County

Lee County's population has barely moved since 2020: 83,731 residents on July 1, 2025 against 83,326 then, by the Census Bureau's estimates. That works out to 186 people per square mile of land. Its largest town, Tupelo, has 38,087 residents, 45.5% of the total.

From Tupelo to Sherman, CDC publishes no figure by town: each reads Lee County's.

The cities and towns in Lee County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Tupelo38,087+0.4%45.5%
Saltillo5,060+2.3%6.0%
Baldwynextends beyond Lee County3,104+1.2%Counted whole
Verona2,713−2.4%3.2%
Guntown2,616+1.0%3.1%
Nettletonextends beyond Lee County1,934−2.2%Counted whole
Shannon1,496+0.1%1.8%
Plantersville856−1.0%1.0%
Shermanextends beyond Lee County680+13.3%Counted whole

9 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 Lee County is counted whole, so it has no share.

Lee County, Homes

Homes in Lee County

Of Lee County's 37,507 homes, 72% are detached houses, against 69% across Mississippi; 11% are mobile homes. Half of its homes were built before 1987, close to Mississippi's 1986: 13% date from before 1960 and 28% from 2000 or later. 70% of occupied homes are lived in by their owner (Mississippi: 69%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Lee County, Mississippi, 2019 to 2023
HomesLee CountyMississippi
Housing units37,5071,332,811
Detached houses72%69%
In buildings of 5 or more10%9%
Mobile homes11%15%
Built before 196013%15%
Built since 200028%28%
Middle year built19871986
Owner-occupied70%69%

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