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Radon Levels in Titus County, Texas

EPA puts Titus County in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2007 to 2016, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Nearest county

    9.1%

    Smith County, 61 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

    Titus
    0.0%
    Texas
    27.3%

    Share of land USGS rates moderate or high potential

  • Tests reported

    1

    Too few for a share

    Titus
    1
    Needed
    30

    2007 to 2016, 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 Titus 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

Titus County, At a glance

Titus County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Titus 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 Titus County, 2007 to 2016, laboratory

CDC holds 1 reported test for Titus County over the 2007 to 2016 laboratory totals, a result of 0.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Titus County beside the counties around it is how this page reads it.

What these figures count

Only 1 test was reported to CDC for Titus County over 2007 to 2016 (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: 2007 to 2016, laboratory. Measured data period: 2005 to 2016 (every CDC figure on file).

How to read these figures

Titus County, Compared

Titus County radon figures, compared

Calculated by Radon411

CDC's largest figure for Titus County rests on 1 test over the 2007 to 2016 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 100.0 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.

The nearest counties with a figure are Smith County (61 miles away) at 9.1%, Collin County (93 miles away) at 7.7% and Dallas County (110 miles away) at 8.7%. 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 Titus 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 Titus 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
Morris County, TXborders it30.0%0.9 pCi/L
The nearest Texas counties to Titus County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Smith County61 mi339.1%0.8 pCi/L
Collin County93 mi2847.7%1.0 pCi/L
Dallas County110 mi6998.7%1.0 pCi/L
Denton County125 mi1817.2%0.9 pCi/L
Tarrant County138 mi31210.6%0.9 pCi/L
McLennan County174 mi4117.1%1.0 pCi/L
Brazos County193 mi490.0%0.2 pCi/L
Montgomery County203 mi857.1%0.6 pCi/L
Titus County ten-year laboratory totals, against Texas' pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestTexas, pooledChange from the row before
2007 to 201610.0%0.1 pCi/L0.1 pCi/L10.4%Level
2006 to 201510.0%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.

Titus County, Geology

The ground under Titus County

Predicted

USGS's geologic map puts all of Titus 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 Titus 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.

Titus County beside the ground around it

Across Texas 0.5% of the land is rated high; none of Titus County's is. Of the 4 counties that border it, 1 has more moderate-potential ground, Red River County the most at 20.6%.

Share of land by USGS radon potential: Titus County, the 4 counties bordering it and Texas
AreaEPA zoneLow potentialModerate potentialHigh potential
Titus CountyZone 3100%NoneNone
Franklin CountyZone 3100%NoneNone
Morris CountyZone 3100%NoneNone
Camp CountyZone 3100%NoneNone
Red River CountyZone 379.4%20.6%None
Texas254 counties, pooled by land areaVaries72.4%26.8%0.5%

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

Local help

Titus County, Local resources

Radon testing and mitigation in Titus County

What it means

Titus County, Questions

Questions about radon in Titus County

Are radon levels high in Titus County?

Over the 2007 to 2016 laboratory totals, 0.0% of the radon tests reported to CDC for Titus County, Texas were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.1 pCi/L. 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 17.1%.

Which counties border Titus County?

Titus County borders 4 counties: Franklin County, Morris County, Camp County and Red River County.

Products

Titus County, Products

Testing a home in Titus County

No CDC figure names Titus County; the nearest county with one, Smith County (61 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 Titus County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Titus County homes, compared

Explore

Titus County, Bordering counties

Counties bordering Titus County

Calculated by Radon411

Titus County, Cities and towns

Cities and towns in Titus County

The Census Bureau estimates 31,563 residents in Titus County for July 1, 2025, 265 more than in 2020 (+0.8%). That works out to 78 people per square mile of land. Mount Pleasant alone is home to 16,225 of them, 51.4% of the total. Together its 4 incorporated places hold 54.5% of those residents; the other 45.5% live outside any of them. Reported testing is thin here: 1 test over 2007 to 2016, or under 0.1 for every 1,000 residents (2025 estimate), where Texas as a whole comes to 0.1.

From Mount Pleasant to Miller's Cove, CDC publishes no figure by town: each reads Titus County's.

The cities and towns in Titus County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Mount Pleasant16,225+0.7%51.4%
Talco485−1.8%1.5%
Winfield416+2.0%1.3%
Miller's Cove76+8.6%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).

Titus County, Homes

Homes in Titus County

Of Titus County's 12,110 homes, 69% are detached houses, against 65% across Texas; 15% are mobile homes. Half of its homes were built before 1985, close to Texas' 1990: 12% date from before 1960 and 23% from 2000 or later. 69% 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 Titus County, Texas, 2019 to 2023
HomesTitus CountyTexas
Housing units12,11011,890,808
Detached houses69%65%
In buildings of 5 or more11%21%
Mobile homes15%7%
Built before 196012%13%
Built since 200023%37%
Middle year built19851990
Owner-occupied69%63%

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