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Radon Levels in Leake County, Mississippi

EPA puts Leake 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

    10.1%

    Tuscaloosa County, 122 miles

    Tuscaloosa
    10.1%

    Share at 4+ pCi/L, 69 tests, 2006 to 2015

  • Ground above low

    None

    8.1 pts below MS

    Leake
    0.0%
    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 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 Leake 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

Leake County, At a glance

Leake County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Leake 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 Leake County. Tuscaloosa County, AL, 122 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.

How to read these figures

Leake County, Compared

Leake County radon figures, compared

Calculated by Radon411

CDC publishes no radon test figure for Leake County, and none for any other Mississippi county: its counts over the 2006 to 2015 laboratory totals cover 2,669 counties elsewhere in the country. 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 Tuscaloosa County, AL (122 miles away) at 10.1%, Franklin County, AL (151 miles away) at 18.6% and Tangipahoa Parish, LA (155 miles away) at 0.0%.

EPA's 1993 map puts Leake 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.

The United States and the counties around Leake 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 Leake County with 30 or more tests, in any state, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Tuscaloosa County, AL122 mi6910.1%1.1 pCi/L
Franklin County, AL151 mi21018.6%1.4 pCi/L
Tangipahoa Parish, LA155 mi430.0%0.1 pCi/L
Mobile County, AL156 mi454.4%0.2 pCi/L
Jefferson County, AL162 mi90410.6%1.3 pCi/L
Colbert County, AL167 mi97836.6%2.7 pCi/L
Fayette County, TN169 mi8413.1%1.2 pCi/L
Autauga County, AL169 mi3912.8%0.9 pCi/L

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

Leake County, Geology

The ground under Leake County

Predicted

USGS's geologic map puts all of Leake County's mapped land in one class: low radon potential. All of it lies in the area the map calls North Central Hills/Flatwoods, to which USGS gives a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under Leake County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
North Central Hills/FlatwoodsTertiary nonmarine to deltaic sediments ranging from sand to clay.Low8100%

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

Leake County beside the ground around it

Across Mississippi 0.1% of the land is rated high; none of Leake County's is. Of the 6 counties that border it, 1 has more moderate-potential ground, Winston County the most at 0.1%.

Share of land by USGS radon potential: Leake County, the 6 counties bordering it and Mississippi
AreaEPA zoneLow potentialModerate potentialHigh potential
Leake CountyZone 3100%NoneNone
Scott CountyZone 3100%NoneNone
Attala CountyZone 3100%NoneNone
Neshoba CountyZone 3100%NoneNone
Madison CountyZone 3100%NoneNone
Winston CountyZone 399.9%0.1%None
Newton CountyZone 3100%NoneNone
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

Leake County, Questions

Questions about radon in Leake County

Are radon levels high in Leake County?

No CDC testing statistics are published here for Leake County, Mississippi yet. Of the 8 nearest counties with a figure, within 169 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 36.6%.

Which counties border Leake County?

Leake County borders 6 counties: Scott County, Attala County, Neshoba County, Madison County, Winston County and Newton County.

Products

Leake County, Products

Testing a home in Leake County

No CDC figure names Leake County; the nearest county with one, Tuscaloosa County, AL (122 miles away), reported 10.1% 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. 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 Leake County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Leake County homes, compared

Explore

Leake County, Bordering counties

Counties bordering Leake County

Calculated by Radon411

Leake County, Cities and towns

Cities and towns in Leake County

The Census Bureau estimates 21,662 residents in Leake County for July 1, 2025, 413 more than in 2020 (+1.9%). That works out to 37 people per square mile of land. Its largest town, Carthage, has 4,864 residents, 22.5% of the total.

From Carthage to Lena, CDC publishes no figure by town: each reads Leake County's.

The cities and towns in Leake County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Carthage4,864−0.6%22.5%
Walnut Grove511+0.8%2.4%
Sebastopolextends beyond Leake County260−1.9%Counted whole
Lena158Level0.7%

4 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 Leake County is counted whole, so it has no share.

Leake County, Homes

Homes in Leake County

Of Leake County's 9,054 homes, 68% are detached houses, against 69% across Mississippi; 25% are mobile homes. Half of its homes were built before 1981, close to Mississippi's 1986: 15% date from before 1960 and 20% from 2000 or later. Owners live in 76% of the occupied homes (Mississippi: 69%), so for most households a test and a fix are their own to order.

Homes in Leake County, Mississippi, 2019 to 2023
HomesLeake CountyMississippi
Housing units9,0541,332,811
Detached houses68%69%
In buildings of 5 or more4%9%
Mobile homes25%15%
Built before 196015%15%
Built since 200020%28%
Middle year built19811986
Owner-occupied76%69%

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