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Radon Levels in Angelina County, Texas

EPA puts Angelina County in Zone 3, its lowest radon zone, and only 3 radon tests from it are 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

How to test this homeFind a certified tester

  • Nearest county

    7.1%

    Montgomery County, 84 miles

    Montgomery
    7.1%
    Texas
    10.4%

    Share at 4+ pCi/L, 85 tests, 2007 to 2016

  • Ground above low

    None

    27.3 pts below Texas

    Angelina
    0.0%
    Texas
    27.3%

    Share of land USGS rates moderate or high potential

  • Tests reported

    3

    Too few for a share

    Angelina
    3
    Needed
    30

    2008 to 2017, 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 Angelina 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

Angelina County, At a glance

Angelina County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Angelina 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 Angelina County, 2008 to 2017, laboratory

CDC holds 3 reported tests for Angelina County over the 2008 to 2017 laboratory totals, with a median of 0.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Angelina County beside the counties around it is how this page reads it.

What these figures count

Only 3 tests were reported to CDC for Angelina 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

Angelina County, Compared

Angelina County radon figures, compared

Calculated by Radon411

CDC's largest figure for Angelina County rests on 3 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 33.3 points and no rank or comparison is drawn from it. Results reached as high as 1.0 pCi/L, with a middle value of 0.1 pCi/L.

The nearest counties with a figure are Montgomery County (84 miles away) at 7.1%, Smith County (86 miles away) at 9.1% and Harris County (107 miles away) at 3.1%. 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 Angelina 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 Angelina 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
Polk County, TXborders it1100.0%25.5 pCi/L
Jasper County, TXborders it20.0%0.1 pCi/L
Nacogdoches County, TXborders it60.0%1.0 pCi/L
Cherokee County, TXborders it10.0%0.1 pCi/L
The nearest Texas counties to Angelina County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Montgomery County84 mi857.1%0.6 pCi/L
Smith County86 mi339.1%0.8 pCi/L
Harris County107 mi7753.1%0.2 pCi/L
Brazos County108 mi490.0%0.2 pCi/L
Galveston County130 mi830.0%0.2 pCi/L
Fort Bend County138 mi1173.4%0.2 pCi/L
Brazoria County151 mi326.3%0.3 pCi/L
McLennan County154 mi4117.1%1.0 pCi/L
Angelina County ten-year laboratory totals, against Texas' pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestTexas, pooledChange from the row before
2008 to 201730.0%0.1 pCi/L1.0 pCi/L10.2%Level
2007 to 201630.0%0.1 pCi/L1.0 pCi/L10.4%Level
2006 to 201530.0%0.1 pCi/L1.0 pCi/L11.0%Level
2005 to 201430.0%0.1 pCi/L1.0 pCi/L10.6%First on file

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

Angelina County, Geology

The ground under Angelina County

Predicted

USGS's geologic map puts all of Angelina 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 Angelina 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.

Angelina County beside the ground around it

Across Texas 0.5% of the land is rated high; none of Angelina County's is. None of the 8 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Angelina County, the 8 counties bordering it and Texas
AreaEPA zoneLow potentialModerate potentialHigh potential
Angelina CountyZone 3100%NoneNone
Nacogdoches CountyZone 3100%NoneNone
San Augustine CountyZone 3100%NoneNone
Trinity CountyZone 3100%NoneNone
Polk CountyZone 3100%NoneNone
Tyler CountyZone 3100%NoneNone
Cherokee CountyZone 3100%NoneNone
Houston CountyZone 3100%NoneNone
Jasper 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

Angelina County, Local resources

Radon testing and mitigation in Angelina County

What Texas's program says
Licensing of radon professionals
There are no radon certification requirements for the State of Texas at this time, but the National Radon Proficiency Program lists radon testers and mitigators within Texas that have passed a rigorous national certification program.

What it means

Angelina County, Questions

Questions about radon in Angelina County

Are radon levels high in Angelina County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Angelina 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 154 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 17.1%.

Which counties border Angelina County?

Angelina County borders 8 counties: Nacogdoches County, San Augustine County, Trinity County, Polk County, Tyler County, Cherokee County, Houston County and Jasper County.

Products

Angelina County, Products

Testing a home in Angelina County

No CDC figure names Angelina County; the nearest county with one, Montgomery County (84 miles away), reported 7.1% 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 Angelina County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Angelina County homes, compared

Explore

Angelina County, Bordering counties

Counties bordering Angelina County

Calculated by Radon411

Angelina County, Cities and towns

Cities and towns in Angelina County

The Census Bureau estimates 88,154 residents in Angelina County for July 1, 2025, 1,658 more than in 2020 (+1.9%). That works out to 110 people per square mile of land. Its largest town, Lufkin, has 34,350 residents, 39.0% of the total. Together its 6 incorporated places hold 54.8% of those residents; the other 45.2% live outside any of them. Reported testing is thin here: 3 tests over 2008 to 2017, or under 0.1 for every 1,000 residents (2025 estimate), where Texas as a whole comes to 0.1.

From Lufkin to Zavalla, CDC publishes no figure by town: each reads Angelina County's.

The cities and towns in Angelina County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Lufkin34,350+0.7%39.0%
Hudson5,328+8.5%6.0%
Diboll5,125+5.2%5.8%
Huntington2,157+3.6%2.4%
Burke704+1.9%0.8%
Zavalla625+3.6%0.7%

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).

Angelina County, Homes

Homes in Angelina County

Of Angelina County's 36,798 homes, 66% are detached houses, against 65% across Texas; 19% are mobile homes. Half of its homes were built before 1985, close to Texas' 1990: 15% date from before 1960 and 27% from 2000 or later. 64% 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 Angelina County, Texas, 2019 to 2023
HomesAngelina CountyTexas
Housing units36,79811,890,808
Detached houses66%65%
In buildings of 5 or more10%21%
Mobile homes19%7%
Built before 196015%13%
Built since 200027%37%
Middle year built19851990
Owner-occupied64%63%

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