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Radon Levels in Mitchell County, Texas

EPA puts Mitchell 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

  • Nearest county

    1.0%

    Midland County, 72 miles

    Midland
    1.0%
    Texas
    10.4%

    Share at 4+ pCi/L, 100 tests, 2007 to 2016

  • Ground above low

    61.5%

    34.3 pts above Texas

    Mitchell
    61.5%
    Texas
    27.3%

    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 Mitchell 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

Mitchell County, At a glance

Mitchell County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Mitchell 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: Moderate across 62% 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 Mitchell County. Midland County, 72 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.

How to read these figures

Mitchell County, Compared

Mitchell County radon figures, compared

Calculated by Radon411

CDC's county radon counts over the 2007 to 2016 laboratory totals cover 140 Texas counties, and Mitchell County is not among them: no year's figure and no ten-year laboratory total names it. Pooled across 140 Texas counties, 10.4% of reported tests reached that level; across every county in the country with a figure, 35.8%.

The nearest counties with a figure are Midland County (72 miles away) at 1.0%, Lubbock County (104 miles away) at 57.8% and Randall County (192 miles away) at 71.4%. 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 Mitchell County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 62% of the county's land moderate radon potential.

Texas, the United States and the counties around Mitchell 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
Scurry County, TXborders it1100.0%11.1 pCi/L
Nolan County, TXborders it30.0%0.9 pCi/L
Howard County, TXborders it30.0%0.5 pCi/L
The nearest Texas counties to Mitchell County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Midland County72 mi1001.0%0.7 pCi/L
Lubbock County104 mi12857.8%4.8 pCi/L
Randall County192 mi8471.4%6.2 pCi/L
Tarrant County214 mi31210.6%0.9 pCi/L
Potter County221 mi7020.0%1.1 pCi/L
Bell County221 mi3514.3%1.1 pCi/L
McLennan County225 mi4117.1%1.0 pCi/L
Williamson County227 mi982.0%0.7 pCi/L

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

Mitchell County, Geology

The ground under Mitchell County

Predicted

USGS's geologic map splits Mitchell County: 61.5% of its land is moderate radon potential and 38.5% low. The map puts 61.5% of Mitchell County in the area it calls Northern High Plains and Plateaus and 38.5% in Central Texas. USGS gives the first a radon index of 10, in the moderate band (9 to 11), and the second 7, in the low band (5 to 8).

USGS's geologic areas under Mitchell County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Northern High Plains and PlateausTertiary sandstone, siltstone, shale.Moderate1061.5%
Central TexasCretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite.Low738.5%

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

Mitchell County beside the ground around it

Across Texas 0.5% of the land is rated high; none of Mitchell County's is. Of the 7 counties that border it, 1 has more moderate-potential ground, Borden County the most at 99.0%.

Share of land by USGS radon potential: Mitchell County, the 7 counties bordering it and Texas
AreaEPA zoneLow potentialModerate potentialHigh potential
Mitchell CountyZone 338.5%61.5%None
Sterling CountyZone 351.5%48.5%None
Howard CountyZone 355.9%44.1%None
Nolan CountyZone 3100%NoneNone
Scurry CountyZone 363.3%36.7%None
Coke CountyZone 3100%NoneNone
Borden CountyZone 31.0%99.0%None
Fisher 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

Mitchell County, Local resources

Radon testing and mitigation in Mitchell County

What it means

Mitchell County, Questions

Questions about radon in Mitchell County

Are radon levels high in Mitchell County?

No CDC testing statistics are published here for Mitchell County, Texas yet. Of the 8 nearest counties with a figure, within 227 miles, the share of tests at or above 4 pCi/L runs from 1.0% to 71.4%.

Which counties border Mitchell County?

Mitchell County borders 7 counties: Sterling County, Howard County, Nolan County, Scurry County, Coke County, Borden County and Fisher County.

Products

Mitchell County, Products

Testing a home in Mitchell County

No CDC figure names Mitchell County; the nearest county with one, Midland County (72 miles away), reported 1.0% 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 Mitchell County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Mitchell County homes, compared

Explore

Mitchell County, Bordering counties

Counties bordering Mitchell County

Calculated by Radon411

Mitchell County, Cities and towns

Cities and towns in Mitchell County

About 8,947 people live in Mitchell County by the Census Bureau's estimate for July 1, 2025, 66 fewer than in 2020 (−0.7%). Spread over its land, that is 9.8 people to the square mile. Its largest town, Colorado City, has 3,884 residents, 43.4% of the total. Together its 3 incorporated places hold 51.3% of those residents; the other 48.7% live outside any of them. CDC publishes no radon test count for Mitchell County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).

From Colorado City to Westbrook, CDC publishes no figure by town: each reads Mitchell County's.

The cities and towns in Mitchell County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Colorado City3,884−2.8%43.4%
Loraine503−1.4%5.6%
Westbrook206+0.5%2.3%

3 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).

Mitchell County, Homes

Homes in Mitchell County

Mitchell County is a place of houses on their own lots: 79% of its 3,697 homes are detached single-family houses, against 65% across Texas. The homes are older than Texas' as a whole: half were built before 1958 (1990 for Texas), and 54% date from before 1960. Owners live in 80% of the occupied homes (Texas: 63%), so for most households a test and a fix are their own to order.

Homes in Mitchell County, Texas, 2019 to 2023
HomesMitchell CountyTexas
Housing units3,69711,890,808
Detached houses79%65%
In buildings of 5 or more2%21%
Mobile homes14%7%
Built before 196054%13%
Built since 20007%37%
Middle year built19581990
Owner-occupied80%63%

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