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Radon Levels in Oktibbeha County, Mississippi

EPA puts Oktibbeha 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, 79 miles

    Tuscaloosa
    10.1%

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

  • Ground above low

    49.2%

    41.0 pts above MS

    Oktibbeha
    49.2%
    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 Oktibbeha 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

Oktibbeha County, At a glance

Oktibbeha County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Oktibbeha 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 51% 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 Oktibbeha County. Tuscaloosa County, AL, 79 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.

How to read these figures

Oktibbeha County, Compared

Oktibbeha County radon figures, compared

Calculated by Radon411

No Mississippi county, Oktibbeha 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 Tuscaloosa County, AL (79 miles away) at 10.1%, Franklin County, AL (92 miles away) at 18.6% and Colbert County, AL (107 miles away) at 36.6%.

EPA's 1993 map puts Oktibbeha County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 51% of the county's land low radon potential.

The United States and the counties around Oktibbeha 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 Oktibbeha County with 30 or more tests, in any state, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Tuscaloosa County, AL79 mi6910.1%1.1 pCi/L
Franklin County, AL92 mi21018.6%1.4 pCi/L
Colbert County, AL107 mi97836.6%2.7 pCi/L
Jefferson County, AL115 mi90410.6%1.3 pCi/L
Lawrence County, AL118 mi17514.9%1.7 pCi/L
McNairy County, TN122 mi498.2%1.0 pCi/L
Lauderdale County, AL124 mi2,02827.1%2.1 pCi/L
Cullman County, AL126 mi1116.3%1.3 pCi/L

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

Oktibbeha County, Geology

The ground under Oktibbeha County

Predicted

USGS's geologic map splits Oktibbeha County: 50.8% of its land is low radon potential and 49.2% moderate. The map puts 50.8% of Oktibbeha County in the area it calls North Central Hills/Flatwoods and 49.2% in Pontotoc Ridge/Black Prairies. USGS gives the first a radon index of 8, in the low band (5 to 8), and the second 9, in the moderate band (9 to 11).

USGS's geologic areas under Oktibbeha County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
North Central Hills/FlatwoodsTertiary nonmarine to deltaic sediments ranging from sand to clay.Low850.8%
Pontotoc Ridge/Black PrairiesGlauconitic sand, clay, sandy limestone, micaceous chalk, and lime.Moderate949.2%

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

Oktibbeha County beside the ground around it

Across Mississippi 0.1% of the land is rated high; none of Oktibbeha County's is. Of the 6 counties that border it, 2 have more moderate-potential ground, Clay County the most at 83.2%.

Share of land by USGS radon potential: Oktibbeha County, the 6 counties bordering it and Mississippi
AreaEPA zoneLow potentialModerate potentialHigh potential
Oktibbeha CountyZone 350.8%49.2%None
Clay CountyZone 216.8%83.2%None
Choctaw CountyZone 3100%NoneNone
Noxubee CountyZone 221.4%78.6%None
Webster CountyZone 3100%NoneNone
Lowndes CountyZone 262.5%37.5%None
Winston CountyZone 399.9%0.1%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

Oktibbeha County, Questions

Questions about radon in Oktibbeha County

Are radon levels high in Oktibbeha County?

No CDC testing statistics are published here for Oktibbeha County, Mississippi yet. Of the 8 nearest counties with a figure, within 126 miles, the share of tests at or above 4 pCi/L runs from 6.3% to 36.6%.

Which counties border Oktibbeha County?

Oktibbeha County borders 6 counties: Clay County, Choctaw County, Noxubee County, Webster County, Lowndes County and Winston County.

Products

Oktibbeha County, Products

Testing a home in Oktibbeha County

No CDC figure names Oktibbeha County; the nearest county with one, Tuscaloosa County, AL (79 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 Oktibbeha County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Oktibbeha County homes, compared

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Oktibbeha County, Bordering counties

Counties bordering Oktibbeha County

Calculated by Radon411

Oktibbeha County, Cities and towns

Cities and towns in Oktibbeha County

Oktibbeha County's population has barely moved since 2020: 51,896 residents on July 1, 2025 against 51,697 then, by the Census Bureau's estimates. That works out to 113 people per square mile of land. Its largest town, Starkville, has 25,754 residents, 49.6% of the total.

From Starkville to Sturgis, CDC publishes no figure by town: each reads Oktibbeha County's.

The cities and towns in Oktibbeha County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Starkville25,754+0.2%49.6%
Mabenextends beyond Oktibbeha County773−0.3%Counted whole
Sturgis205−0.5%0.4%

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). A place that extends beyond Oktibbeha County is counted whole, so it has no share.

Oktibbeha County, Homes

Homes in Oktibbeha County

Fewer than six in ten of Oktibbeha County's 25,426 homes are detached houses (49%, against 69% across Mississippi); the rest are attached, in shared buildings or mobile. Half of its homes were built before 1992, close to Mississippi's 1986: 10% date from before 1960 and 36% from 2000 or later. Most occupied homes here are rented: owners live in 48% (Mississippi: 69%). A tenant can run a test; a fix is the landlord's to make.

Homes in Oktibbeha County, Mississippi, 2019 to 2023
HomesOktibbeha CountyMississippi
Housing units25,4261,332,811
Detached houses49%69%
In buildings of 5 or more23%9%
Mobile homes11%15%
Built before 196010%15%
Built since 200036%28%
Middle year built19921986
Owner-occupied48%69%

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