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Radon Levels in Yazoo County, Mississippi

EPA puts Yazoo 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, 148 miles

    Tangipahoa Parish
    0.0%

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

  • Ground above low

    None

    8.1 pts below MS

    Yazoo
    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 Yazoo 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

Yazoo County, At a glance

Yazoo County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Yazoo 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 Yazoo County. Tangipahoa Parish, LA, 148 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.

How to read these figures

Yazoo County, Compared

Yazoo County radon figures, compared

Calculated by Radon411

CDC publishes no radon test figure for Yazoo 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 Tangipahoa Parish, LA (148 miles away) at 0.0%, East Baton Rouge Parish, LA (160 miles away) at 0.0% and Shelby County, TN (168 miles away) at 7.0%.

EPA's 1993 map puts Yazoo 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 Yazoo 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 Yazoo County with 30 or more tests, in any state, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Tangipahoa Parish, LA148 mi430.0%0.1 pCi/L
East Baton Rouge Parish, LA160 mi480.0%0.6 pCi/L
Shelby County, TN168 mi3417.0%1.0 pCi/L
Tuscaloosa County, AL170 mi6910.1%1.1 pCi/L
Fayette County, TN176 mi8413.1%1.2 pCi/L
Pulaski County, AR176 mi976.2%1.0 pCi/L
Saline County, AR184 mi4731.9%2.1 pCi/L
Franklin County, AL186 mi21018.6%1.4 pCi/L

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

Yazoo County, Geology

The ground under Yazoo County

Predicted

USGS's geologic map puts all of Yazoo County's mapped land in one class: low radon potential. The map puts 48.4% of Yazoo County in the area it calls Loess Hills and 41.2% in Mississippi Alluvial Plain, with one smaller area beside them. USGS gives the first a radon index of 7 and the second 8, both in the low band (5 to 8).

USGS's geologic areas under Yazoo County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Loess HillsLoess.Low748.4%
Mississippi Alluvial PlainAlluvial sand, silt, gravel, and clay.Low841.2%
North Central Hills/FlatwoodsTertiary nonmarine to deltaic sediments ranging from sand to clay.Low810.4%

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

Yazoo County beside the ground around it

Across Mississippi 0.1% of the land is rated high; none of Yazoo County's is. None of the 8 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Yazoo County, the 8 counties bordering it and Mississippi
AreaEPA zoneLow potentialModerate potentialHigh potential
Yazoo CountyZone 3100%NoneNone
Madison CountyZone 3100%NoneNone
Humphreys CountyZone 3100%NoneNone
Sharkey CountyZone 3100%NoneNone
Hinds CountyZone 3100%NoneNone
Holmes CountyZone 3100%NoneNone
Warren CountyZone 3100%NoneNone
Issaquena CountyZone 3100%NoneNone
Attala 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

Yazoo County, Questions

Questions about radon in Yazoo County

Are radon levels high in Yazoo County?

No CDC testing statistics are published here for Yazoo County, Mississippi yet. Of the 8 nearest counties with a figure, within 186 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 31.9%.

Which counties border Yazoo County?

Yazoo County borders 8 counties: Madison County, Humphreys County, Sharkey County, Hinds County, Holmes County, Warren County, Issaquena County and Attala County.

Products

Yazoo County, Products

Testing a home in Yazoo County

No CDC figure names Yazoo County; the nearest county with one, Tangipahoa Parish, LA (148 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 Yazoo County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Yazoo County homes, compared

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Yazoo County, Bordering counties

Counties bordering Yazoo County

Calculated by Radon411

Yazoo County, Cities and towns

Cities and towns in Yazoo County

Yazoo County has been losing residents: from 26,671 in 2020 to 22,947 on July 1, 2025, a fall of 14.0% by the Census Bureau's estimates. That works out to 25 people per square mile of land. Its largest town, Yazoo City, has 9,867 residents, 43.0% of the total. Together its 4 incorporated places hold 45.0% of those residents; the other 55.0% live outside any of them.

From Yazoo City to Satartia, CDC publishes no figure by town: each reads Yazoo County's.

The cities and towns in Yazoo County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Yazoo City9,867−6.6%43.0%
Bentonia296−6.9%1.3%
Eden134+0.8%0.6%
Satartia38−7.3%0.2%

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).

Yazoo County, Homes

Homes in Yazoo County

Of Yazoo County's 10,473 homes, 64% are detached houses, against 69% across Mississippi; 21% are mobile homes. Half of its homes were built before 1979, close to Mississippi's 1986: 23% date from before 1960 and 22% from 2000 or later. 55% 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 Yazoo County, Mississippi, 2019 to 2023
HomesYazoo CountyMississippi
Housing units10,4731,332,811
Detached houses64%69%
In buildings of 5 or more9%9%
Mobile homes21%15%
Built before 196023%15%
Built since 200022%28%
Middle year built19791986
Owner-occupied55%69%

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