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Radon Levels in Chickasaw County, Mississippi

EPA puts Chickasaw 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, 73 miles

    Franklin
    18.6%

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

  • Ground above low

    63.3%

    55.2 pts above MS

    Chickasaw
    63.3%
    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 Chickasaw 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

Chickasaw County, At a glance

Chickasaw County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Chickasaw 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 63% 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 Chickasaw County. Franklin County, AL, 73 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.

How to read these figures

Chickasaw County, Compared

Chickasaw County radon figures, compared

Calculated by Radon411

No Mississippi county, Chickasaw 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 (73 miles away) at 18.6%, Colbert County, AL (85 miles away) at 36.6% and McNairy County, TN (89 miles away) at 8.2%.

EPA's 1993 map puts Chickasaw County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 63% of the county's land moderate radon potential.

The United States and the counties around Chickasaw 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 Chickasaw County with 30 or more tests, in any state, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Franklin County, AL73 mi21018.6%1.4 pCi/L
Colbert County, AL85 mi97836.6%2.7 pCi/L
McNairy County, TN89 mi498.2%1.0 pCi/L
Fayette County, TN92 mi8413.1%1.2 pCi/L
Tuscaloosa County, AL93 mi6910.1%1.1 pCi/L
Lauderdale County, AL100 mi2,02827.1%2.1 pCi/L
Lawrence County, AL102 mi17514.9%1.7 pCi/L
Shelby County, TN102 mi3417.0%1.0 pCi/L

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

Chickasaw County, Geology

The ground under Chickasaw County

Predicted

USGS's geologic map splits Chickasaw County: 63.3% of its land is moderate radon potential and 36.7% low. The map puts 63.3% of Chickasaw County in the area it calls Pontotoc Ridge/Black Prairies and 36.7% in North Central Hills/Flatwoods. USGS gives the first a radon index of 9, in the moderate band (9 to 11), and the second 8, in the low band (5 to 8).

USGS's geologic areas under Chickasaw County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Pontotoc Ridge/Black PrairiesGlauconitic sand, clay, sandy limestone, micaceous chalk, and lime.Moderate963.3%
North Central Hills/FlatwoodsTertiary nonmarine to deltaic sediments ranging from sand to clay.Low836.7%

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

Chickasaw County beside the ground around it

Across Mississippi 0.1% of the land is rated high; none of Chickasaw County's is. Of the 6 counties that border it, 2 have more moderate-potential ground, Lee County the most at 97.6%.

Share of land by USGS radon potential: Chickasaw County, the 6 counties bordering it and Mississippi
AreaEPA zoneLow potentialModerate potentialHigh potential
Chickasaw CountyZone 236.7%63.3%None
Clay CountyZone 216.8%83.2%None
Calhoun CountyZone 3100%NoneNone
Pontotoc CountyZone 256.9%43.1%None
Lee CountyZone 22.4%97.6%None
Monroe CountyZone 372.0%28.0%None
Webster 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

Chickasaw County, Questions

Questions about radon in Chickasaw County

Are radon levels high in Chickasaw County?

No CDC testing statistics are published here for Chickasaw County, Mississippi yet. Of the 8 nearest counties with a figure, within 102 miles, the share of tests at or above 4 pCi/L runs from 7.0% to 36.6%.

Which counties border Chickasaw County?

Chickasaw County borders 6 counties: Clay County, Calhoun County, Pontotoc County, Lee County, Monroe County and Webster County.

Products

Chickasaw County, Products

Testing a home in Chickasaw County

No CDC figure names Chickasaw County; the nearest county with one, Franklin County, AL (73 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 Chickasaw County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Chickasaw County homes, compared

Explore

Chickasaw County, Bordering counties

Counties bordering Chickasaw County

Calculated by Radon411

Chickasaw County, Cities and towns

Cities and towns in Chickasaw County

About 16,730 people live in Chickasaw County by the Census Bureau's estimate for July 1, 2025, 351 fewer than in 2020 (−2.1%). That works out to 33 people per square mile of land. Its largest town, Houston, has 3,670 residents, 21.9% of the total. Together its 4 incorporated places hold 41.0% of those residents; the other 59.0% live outside any of them.

From Houston to Woodland, CDC publishes no figure by town: each reads Chickasaw County's.

The cities and towns in Chickasaw County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Houston3,670−3.2%21.9%
Okolona2,394−4.4%14.3%
New Houlka677−2.6%4.0%
Woodland117+5.4%0.7%

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).

Chickasaw County, Homes

Homes in Chickasaw County

Of Chickasaw County's 7,817 homes, 72% are detached houses, against 69% across Mississippi; 20% are mobile homes. The homes are older than Mississippi's as a whole: half were built before 1978 (1986 for Mississippi), and 16% date from before 1960. 67% 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 Chickasaw County, Mississippi, 2019 to 2023
HomesChickasaw CountyMississippi
Housing units7,8171,332,811
Detached houses72%69%
In buildings of 5 or more1%9%
Mobile homes20%15%
Built before 196016%15%
Built since 200018%28%
Middle year built19781986
Owner-occupied67%69%

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