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Radon Levels in Issaquena County, Mississippi

EPA puts Issaquena 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

    0.0%

    Tangipahoa Parish, 150 miles

    Tangipahoa Parish
    0.0%

    Share at 4+ pCi/L, 43 tests, 2006 to 2015

  • Ground above low

    None

    8.1 pts below MS

    Issaquena
    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 Issaquena 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

Issaquena County, At a glance

Issaquena County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Issaquena 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 Issaquena County. Tangipahoa Parish, LA, 150 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.

How to read these figures

Issaquena County, Compared

Issaquena County radon figures, compared

Calculated by Radon411

No Mississippi county, Issaquena 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 Tangipahoa Parish, LA (150 miles away) at 0.0%, East Baton Rouge Parish, LA (152 miles away) at 0.0% and Pulaski County, AR (159 miles away) at 6.2%.

EPA's 1993 map puts Issaquena 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 Issaquena 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 Issaquena County with 30 or more tests, in any state, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Tangipahoa Parish, LA150 mi430.0%0.1 pCi/L
East Baton Rouge Parish, LA152 mi480.0%0.6 pCi/L
Pulaski County, AR159 mi976.2%1.0 pCi/L
Saline County, AR163 mi4731.9%2.1 pCi/L
Garland County, AR178 mi4445.5%2.9 pCi/L
Shelby County, TN180 mi3417.0%1.0 pCi/L
Fayette County, TN192 mi8413.1%1.2 pCi/L
Tipton County, TN203 mi715.6%1.1 pCi/L

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

Issaquena County, Geology

The ground under Issaquena County

Predicted

USGS's geologic map puts all of Issaquena County's mapped land in one class: low radon potential. 99.0% 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).

USGS's geologic areas under Issaquena County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Mississippi Alluvial PlainAlluvial sand, silt, gravel, and clay.Low899.0%
FloodplainAlluvium, marsh, silt, and clay.Low71.0%

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

Issaquena County beside the ground around it

Across Mississippi 0.1% of the land is rated high; none of Issaquena County's is. None of the 6 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Issaquena County, the 6 counties bordering it and Mississippi
AreaEPA zoneLow potentialModerate potentialHigh potential
Issaquena CountyZone 3100%NoneNone
East Carroll Parish, LAZone 3100%NoneNone
Sharkey CountyZone 3100%NoneNone
Warren CountyZone 3100%NoneNone
Yazoo CountyZone 3100%NoneNone
Washington CountyZone 3100%NoneNone
Chicot County, ARZone 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

Issaquena County, Questions

Questions about radon in Issaquena County

Are radon levels high in Issaquena County?

No CDC testing statistics are published here for Issaquena County, Mississippi yet. Of the 8 nearest counties with a figure, within 203 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 45.5%.

Which counties border Issaquena County?

Issaquena County borders 6 counties: East Carroll Parish, LA, Sharkey County, MS, Warren County, MS, Yazoo County, MS, Washington County, MS and Chicot County, AR.

Products

Issaquena County, Products

Testing a home in Issaquena County

No CDC figure names Issaquena County; the nearest county with one, Tangipahoa Parish, LA (150 miles away), reported 0.0% 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 Issaquena County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Issaquena County homes, compared

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Issaquena County, Bordering counties

Counties bordering Issaquena County

Calculated by Radon411

Issaquena County, Cities and towns

Cities and towns in Issaquena County

About 1,263 people live in Issaquena County by the Census Bureau's estimate for July 1, 2025, 63 fewer than in 2020 (−4.8%). Spread over its land, that is 3.1 people to the square mile. Mayersville, its one incorporated place, has 453 residents, 35.9% of the total.

Mayersville is the one incorporated place here; CDC publishes no figure by town, so it reads Issaquena County's.

Mayersville, Issaquena County: residents on July 1, 2025
PlaceResidentsSince 2020Share of residents
Mayersville453+5.3%35.9%

One incorporated place, 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).

Issaquena County, Homes

Homes in Issaquena County

Of Issaquena County's 438 homes, 57% are detached houses, against 69% across Mississippi; 21% are mobile homes. Half of its homes were built before 1987, close to Mississippi's 1986: 11% date from before 1960 and 18% from 2000 or later. 63% 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 Issaquena County, Mississippi, 2019 to 2023
HomesIssaquena CountyMississippi
Housing units4381,332,811
Detached houses57%69%
In buildings of 5 or more8%9%
Mobile homes21%15%
Built before 196011%15%
Built since 200018%28%
Middle year built19871986
Owner-occupied63%69%

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