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Radon Levels in Newton County, Mississippi

EPA puts Newton 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

How to test this homeFind a certified tester

  • Nearest county

    10.1%

    Tuscaloosa County, 111 miles

    Tuscaloosa
    10.1%

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

  • Ground above low

    None

    8.1 pts below MS

    Newton
    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 Newton 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.

Interpret this readingWhat a fix costs

The data

Newton County, At a glance

Newton County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Newton 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 Newton County. Tuscaloosa County, AL, 111 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.

How to read these figures

Newton County, Compared

Newton County radon figures, compared

Calculated by Radon411

No Mississippi county, Newton 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 (111 miles away) at 10.1%, Mobile County, AL (123 miles away) at 4.4% and Tangipahoa Parish, LA (144 miles away) at 0.0%.

EPA's 1993 map puts Newton 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 Newton 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 Newton County with 30 or more tests, in any state, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Tuscaloosa County, AL111 mi6910.1%1.1 pCi/L
Mobile County, AL123 mi454.4%0.2 pCi/L
Tangipahoa Parish, LA144 mi430.0%0.1 pCi/L
Autauga County, AL145 mi3912.8%0.9 pCi/L
Jefferson County, AL152 mi90410.6%1.3 pCi/L
Shelby County, AL155 mi43610.3%1.3 pCi/L
Escambia County, FL158 mi510.0%0.7 pCi/L
Franklin County, AL159 mi21018.6%1.4 pCi/L

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

Newton County, Geology

The ground under Newton County

Predicted

USGS's geologic map puts all of Newton County's mapped land in one class: low radon potential. The map puts 91.7% of Newton County in the area it calls North Central Hills/Flatwoods and 8.3% in Jackson Prairies. USGS gives both a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under Newton County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
North Central Hills/FlatwoodsTertiary nonmarine to deltaic sediments ranging from sand to clay.Low891.7%
Jackson PrairiesSand, marl, clay, and limestone.Low88.3%

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

Newton County beside the ground around it

Across Mississippi 0.1% of the land is rated high; none of Newton County's is. Of the 8 counties that border it, 1 has more moderate-potential ground, Kemper County the most at 13.3%.

Share of land by USGS radon potential: Newton County, the 8 counties bordering it and Mississippi
AreaEPA zoneLow potentialModerate potentialHigh potential
Newton CountyZone 3100%NoneNone
Jasper CountyZone 3100%NoneNone
Neshoba CountyZone 3100%NoneNone
Scott CountyZone 3100%NoneNone
Lauderdale CountyZone 3100%NoneNone
Clarke CountyZone 3100%NoneNone
Leake CountyZone 3100%NoneNone
Smith CountyZone 3100%NoneNone
Kemper CountyZone 386.7%13.3%None
Mississippi82 counties, pooled by land areaVaries91.8%8.0%0.1%

The map rates the ground, not the air in any home.

Local help

Newton County, Local resources

Radon testing and mitigation in Newton County

What Mississippi's program says
Phone
1-800-626-7739

What it means

Newton County, Questions

Questions about radon in Newton County

Are radon levels high in Newton County?

No CDC testing statistics are published here for Newton County, Mississippi yet. Of the 8 nearest counties with a figure, within 159 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 18.6%.

Which counties border Newton County?

Newton County borders 8 counties: Jasper County, Neshoba County, Scott County, Lauderdale County, Clarke County, Leake County, Smith County and Kemper County.

Products

Newton County, Products

Testing a home in Newton County

No CDC figure names Newton County; the nearest county with one, Tuscaloosa County, AL (111 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 Newton County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Newton County homes, compared

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Newton County, Bordering counties

Counties bordering Newton County

Calculated by Radon411

Newton County, Cities and towns

Cities and towns in Newton County

About 20,960 people live in Newton County by the Census Bureau's estimate for July 1, 2025, 290 fewer than in 2020 (−1.4%). That works out to 36 people per square mile of land. No town dominates: Newton, the largest, has 3,040 residents, 14.5% of the total.

From Newton to Chunky, CDC publishes no figure by town: each reads Newton County's.

The cities and towns in Newton County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Newton3,040−4.6%14.5%
Unionextends beyond Newton County2,007−1.6%Counted whole
Decatur1,878−3.1%9.0%
Lakeextends beyond Newton County470−0.6%Counted whole
Hickory406−0.7%1.9%
Chunky268−0.7%1.3%

6 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 Newton County is counted whole, so it has no share.

Newton County, Homes

Homes in Newton County

Of Newton County's 9,145 homes, 69% are detached houses, against 69% across Mississippi; 25% are mobile homes. Half of its homes were built before 1984, close to Mississippi's 1986: 16% date from before 1960 and 30% from 2000 or later. Owners live in 79% of the occupied homes (Mississippi: 69%), so for most households a test and a fix are their own to order.

Homes in Newton County, Mississippi, 2019 to 2023
HomesNewton CountyMississippi
Housing units9,1451,332,811
Detached houses69%69%
In buildings of 5 or more1%9%
Mobile homes25%15%
Built before 196016%15%
Built since 200030%28%
Middle year built19841986
Owner-occupied79%69%

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