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Radon Levels in Cherokee County, Texas

EPA puts Cherokee County in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Highest bordering

    9.1%

    Smith County

    Smith
    9.1%

    1 of 7 neighbours have 30+ tests, 2007 to 2016

  • Nearest county

    9.1%

    Smith County, 38 miles

    Smith
    9.1%
    Texas
    10.4%

    Share at 4+ pCi/L, 33 tests, 2007 to 2016

  • Ground above low

    None

    27.3 pts below Texas

    Cherokee
    0.0%
    Texas
    27.3%

    Share of land USGS rates moderate or high potential

  • Tests reported

    2

    Too few for a share

    Cherokee
    2
    Needed
    30

    2006 to 2015, laboratory

  • 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 Cherokee 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

Cherokee County, At a glance

Cherokee County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Cherokee 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

Radon tests reported for Cherokee County, 2008 to 2017, laboratory

CDC holds 1 reported test for Cherokee County over the 2008 to 2017 laboratory totals, a result of 0.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Cherokee County beside the counties around it is how this page reads it.

What these figures count

Only 1 test was reported to CDC for Cherokee County over 2008 to 2017 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.

Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).

How to read these figures

Cherokee County, Compared

Cherokee County radon figures, compared

Calculated by Radon411

CDC's largest figure for Cherokee County rests on 2 tests over the 2006 to 2015 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 50.0 points and no rank or comparison is drawn from it. Results reached as high as 0.1 pCi/L, with a middle value of 0.1 pCi/L.

Smith County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 9.1% of its tests at or above 4 pCi/L. Farther out, Brazos County (105 miles away) at 0.0%, Montgomery County (108 miles away) at 7.1% and Dallas County (114 miles away) at 8.7% have figures too. Pooled across 140 Texas counties, 10.4% of reported tests reached that level; across every county in the country with a figure, 35.8%.

Statewide for the same period, Randall County reported the highest share (71.4%) and Nueces County the lowest (0.0%). EPA's 1993 map puts Cherokee 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.

Texas, the United States and the counties around Cherokee County, 2007 to 2016, laboratory
AreaTestsAt or above 4 pCi/LMedian
Texas, pooled140 counties, pooled4,54810.4%Not pooled
United States, pooled2,666 counties, pooled1,939,02535.8%Not pooled
Randall Countyhighest in the state8471.4%6.2 pCi/L
Nueces Countylowest in the state450.0%0.6 pCi/L
Smith County, TXborders it339.1%0.8 pCi/L
Nacogdoches County, TXborders it60.0%1.0 pCi/L
Rusk County, TXborders it20.0%0.4 pCi/L
Angelina County, TXborders it30.0%0.1 pCi/L
Henderson County, TXborders it10.0%0.8 pCi/L
The nearest Texas counties to Cherokee County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Smith County38 mi339.1%0.8 pCi/L
Brazos County105 mi490.0%0.2 pCi/L
Montgomery County108 mi857.1%0.6 pCi/L
Dallas County114 mi6998.7%1.0 pCi/L
McLennan County122 mi4117.1%1.0 pCi/L
Collin County124 mi2847.7%1.0 pCi/L
Harris County137 mi7753.1%0.2 pCi/L
Tarrant County140 mi31210.6%0.9 pCi/L
Cherokee County ten-year laboratory totals, against Texas' pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestTexas, pooledChange from the row before
2008 to 201710.0%0.1 pCi/L0.1 pCi/L10.2%Level
2007 to 201610.0%0.1 pCi/L0.1 pCi/L10.4%Level
2006 to 201520.0%0.1 pCi/L0.1 pCi/L11.0%Level
2005 to 201410.0%0.1 pCi/L0.1 pCi/L10.6%First on file

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

Cherokee County, Geology

The ground under Cherokee County

Predicted

USGS's geologic map puts all of Cherokee County's mapped land in one class: low radon potential. All of it lies in the area the map calls East Texas Province, to which USGS gives a radon index of 6, in the low band (5 to 8).

USGS's geologic areas under Cherokee County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
East Texas ProvinceCretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite.Low6100%

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

Cherokee County beside the ground around it

Across Texas 0.5% of the land is rated high; none of Cherokee County's is. None of the 7 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Cherokee County, the 7 counties bordering it and Texas
AreaEPA zoneLow potentialModerate potentialHigh potential
Cherokee CountyZone 3100%NoneNone
Anderson CountyZone 3100%NoneNone
Rusk CountyZone 3100%NoneNone
Nacogdoches CountyZone 3100%NoneNone
Houston CountyZone 3100%NoneNone
Smith CountyZone 3100%NoneNone
Angelina CountyZone 3100%NoneNone
Henderson CountyZone 3100%NoneNone
Texas254 counties, pooled by land areaVaries72.4%26.8%0.5%

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

Local help

Cherokee County, Local resources

Radon testing and mitigation in Cherokee County

What it means

Cherokee County, Questions

Questions about radon in Cherokee County

Are radon levels high in Cherokee County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Cherokee County, Texas were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.1 pCi/L. Smith County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 9.1% of its tests at or above 4 pCi/L.

Which counties border Cherokee County?

Cherokee County borders 7 counties: Anderson County, Rusk County, Nacogdoches County, Houston County, Smith County, Angelina County and Henderson County.

Products

Cherokee County, Products

Testing a home in Cherokee County

No CDC figure names Cherokee County; the nearest county with one, Smith County (38 miles away), reported 9.1% of its tests at or above 4 pCi/L over the 2007 to 2016 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 Cherokee County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Cherokee County homes, compared

Explore

Cherokee County, Bordering counties

Counties bordering Cherokee County

Calculated by Radon411

Cherokee County, Cities and towns

Cities and towns in Cherokee County

Cherokee County is growing: the Census Bureau puts it at 53,337 residents on July 1, 2025, up 5.4% from 50,619 in 2020. That works out to 51 people per square mile of land. Its largest town, Jacksonville, has 14,658 residents, 27.5% of the total. Reported testing is thin here: 2 tests over 2006 to 2015, or under 0.1 for every 1,000 residents (2025 estimate), where Texas as a whole comes to 0.1.

From Jacksonville to Cuney, CDC publishes no figure by town: each reads Cherokee County's.

The cities and towns in Cherokee County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Jacksonville14,658+4.5%27.5%
Rusk5,568+3.0%10.4%
Bullardextends beyond Cherokee County5,301+37.8%Counted whole
Troupextends beyond Cherokee County2,188+8.8%Counted whole
Alto1,063+3.6%2.0%
New Summerfield915+9.7%1.7%
Wells893+4.2%1.7%
Reklawextends beyond Cherokee County349+4.2%Counted whole
Gallatin344+6.8%0.6%
Cuney119+5.3%0.2%

10 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 Cherokee County is counted whole, so it has no share.

Cherokee County, Homes

Homes in Cherokee County

Of Cherokee County's 20,964 homes, 72% are detached houses, against 65% across Texas; 19% are mobile homes. Half of its homes were built before 1987, close to Texas' 1990: 19% date from before 1960 and 30% from 2000 or later. 73% of occupied homes are lived in by their owner (Texas: 63%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Cherokee County, Texas, 2019 to 2023
HomesCherokee CountyTexas
Housing units20,96411,890,808
Detached houses72%65%
In buildings of 5 or more4%21%
Mobile homes19%7%
Built before 196019%13%
Built since 200030%37%
Middle year built19871990
Owner-occupied73%63%

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