Skip to content
RADON411

Locations and reports

Radon Levels in Goliad County, Texas

EPA puts Goliad County in Zone 3, its lowest radon zone, and only 6 radon tests from it are 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

How to test this homeFind a certified tester

  • Nearest county

    0.0%

    Nueces County, 65 miles

    Nueces
    0.0%
    Texas
    10.4%

    Share at 4+ pCi/L, 45 tests, 2007 to 2016

  • Ground above low

    None

    27.3 pts below Texas

    Goliad
    0.0%
    Texas
    27.3%

    Share of land USGS rates moderate or high potential

  • Tests reported

    6

    Too few for a share

    Goliad
    6
    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 Goliad 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

Goliad County, At a glance

Goliad County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

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

CDC holds 6 reported tests for Goliad County over the 2007 to 2016 laboratory totals, with a median of 0.6 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Goliad County beside the counties around it is how this page reads it.

What these figures count

Only 6 tests were reported to CDC for Goliad 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

Goliad County, Compared

Goliad County radon figures, compared

Calculated by Radon411

CDC's largest figure for Goliad County rests on 6 tests over the 2007 to 2016 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 16.7 points and no rank or comparison is drawn from it. Results reached as high as 1.6 pCi/L, with a middle value of 0.6 pCi/L.

The nearest counties with a figure are Nueces County (65 miles away) at 0.0%, Bexar County (86 miles away) at 6.6% and Fort Bend County (117 miles away) at 3.4%. 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 Goliad 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 Goliad 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
Refugio County, TXborders it10.0%1.2 pCi/L
DeWitt County, TXborders it20.0%1.3 pCi/L
Victoria County, TXborders it50.0%0.6 pCi/L
The nearest Texas counties to Goliad County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Nueces County65 mi450.0%0.6 pCi/L
Bexar County86 mi1976.6%0.6 pCi/L
Fort Bend County117 mi1173.4%0.2 pCi/L
Travis County118 mi4089.3%0.8 pCi/L
Brazoria County125 mi326.3%0.3 pCi/L
Williamson County138 mi982.0%0.7 pCi/L
Harris County148 mi7753.1%0.2 pCi/L
Brazos County154 mi490.0%0.2 pCi/L
Goliad County ten-year laboratory totals, against Texas' pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestTexas, pooledChange from the row before
2007 to 201660.0%0.6 pCi/L1.6 pCi/L10.4%Level
2006 to 201560.0%0.6 pCi/L1.6 pCi/L11.0%Level
2005 to 201460.0%0.6 pCi/L1.6 pCi/L10.6%First on file

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

Goliad County, Geology

The ground under Goliad County

Predicted

USGS's geologic map puts all of Goliad County's mapped land in one class: low radon potential. All of it lies in the area the map calls Coastal Plain, to which USGS gives a radon index of 7, in the low band (5 to 8).

USGS's geologic areas under Goliad County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Coastal PlainCretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite.Low7100%

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

Goliad County beside the ground around it

Across Texas 0.5% of the land is rated high; none of Goliad County's is. None of the 5 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Goliad County, the 5 counties bordering it and Texas
AreaEPA zoneLow potentialModerate potentialHigh potential
Goliad CountyZone 3100%NoneNone
Bee CountyZone 3100%NoneNone
DeWitt CountyZone 3100%NoneNone
Refugio CountyZone 3100%NoneNone
Karnes CountyZone 3100%NoneNone
Victoria 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

Goliad County, Local resources

Radon testing and mitigation in Goliad 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

Goliad County, Questions

Questions about radon in Goliad County

Are radon levels high in Goliad County?

Over the 2007 to 2016 laboratory totals, 0.0% of the radon tests reported to CDC for Goliad County, Texas were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.6 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 9.3%.

Which counties border Goliad County?

Goliad County borders 5 counties: Bee County, DeWitt County, Refugio County, Karnes County and Victoria County.

Products

Goliad County, Products

Testing a home in Goliad County

No CDC figure names Goliad County; the nearest county with one, Nueces County (65 miles away), reported 0.0% 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 Goliad County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Goliad County homes, compared

Explore

Goliad County, Bordering counties

Counties bordering Goliad County

Calculated by Radon411

Goliad County, Cities and towns

Cities and towns in Goliad County

The Census Bureau estimates 7,208 residents in Goliad County for July 1, 2025, 187 more than in 2020 (+2.7%). Spread over its land, that is 8.5 people to the square mile. Goliad, its one incorporated place, has 1,708 residents, 23.7% of the total. Testing is reported here more often than across the state: CDC's 6 reported tests for 2007 to 2016 come to 0.8 for every 1,000 residents (2025 estimate), against 0.1 for Texas.

Goliad is the one incorporated place here; CDC publishes no figure by town, so it reads Goliad County's.

Goliad, Goliad County: residents on July 1, 2025
PlaceResidentsSince 2020Share of residents
Goliad1,708+5.2%23.7%

One incorporated place, 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).

Goliad County, Homes

Homes in Goliad County

Goliad County is a place of houses on their own lots: 78% of its 3,541 homes are detached single-family houses, against 65% across Texas. Half of its homes were built before 1986, close to Texas' 1990: 15% date from before 1960 and 27% from 2000 or later. Owners live in 83% of the occupied homes (Texas: 63%), so for most households a test and a fix are their own to order.

Homes in Goliad County, Texas, 2019 to 2023
HomesGoliad CountyTexas
Housing units3,54111,890,808
Detached houses78%65%
In buildings of 5 or more2%21%
Mobile homes16%7%
Built before 196015%13%
Built since 200027%37%
Middle year built19861990
Owner-occupied83%63%

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