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Radon Levels in Roberts County, Texas

EPA puts Roberts County in Zone 2, its middle radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Nearest county

    20.0%

    Potter County, 68 miles

    Potter
    20.0%
    Texas
    10.4%

    Share at 4+ pCi/L, 70 tests, 2007 to 2016

  • Ground above low

    100.0%

    72.7 pts above Texas

    Roberts
    100.0%
    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 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

Read a result for Roberts 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

Roberts County, At a glance

Roberts County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Roberts County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

USGS geologic potential: Moderate across 100% 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 Roberts County. Potter County, 68 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.

How to read these figures

Roberts County, Compared

Roberts County radon figures, compared

Calculated by Radon411

No CDC figure names Roberts County, in any year or ten-year total; over the 2007 to 2016 laboratory totals, the agency's counts reach 140 Texas counties without 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 Potter County (68 miles away) at 20.0%, Randall County (86 miles away) at 71.4% and Lubbock County (164 miles away) at 57.8%. 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 Roberts County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.

Texas, the United States and the counties around Roberts 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
Lipscomb County, TXborders it1100.0%7.3 pCi/L
Carson County, TXborders it2100.0%36.2 pCi/L
Ochiltree County, TXborders it2100.0%12.1 pCi/L
Hutchinson County, TXborders it520.0%2.7 pCi/L
Gray County, TXborders it30.0%1.9 pCi/L
Hemphill County, TXborders it10.0%3.9 pCi/L
Wheeler County, TXborders it30.0%2.7 pCi/L
The nearest Texas counties to Roberts County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Potter County68 mi7020.0%1.1 pCi/L
Randall County86 mi8471.4%6.2 pCi/L
Lubbock County164 mi12857.8%4.8 pCi/L
Denton County278 mi1817.2%0.9 pCi/L
Midland County282 mi1001.0%0.7 pCi/L
Tarrant County292 mi31210.6%0.9 pCi/L
Collin County303 mi2847.7%1.0 pCi/L
Dallas County313 mi6998.7%1.0 pCi/L

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

Roberts County, Geology

The ground under Roberts County

Predicted

USGS's geologic map puts all of Roberts County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Northern High Plains and Plateaus, to which USGS gives a radon index of 10, in the moderate band (9 to 11).

USGS's geologic areas under Roberts County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Northern High Plains and PlateausTertiary sandstone, siltstone, shale.Moderate10100%

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

Roberts County beside the ground around it

Across Texas 0.5% of the land is rated high; none of Roberts County's is. Of the 8 counties that border it, none has as large a share of moderate-potential ground; Carson County comes nearest at 100%.

Share of land by USGS radon potential: Roberts County, the 8 counties bordering it and Texas
AreaEPA zoneLow potentialModerate potentialHigh potential
Roberts CountyZone 2None100%None
Ochiltree CountyZone 2None100%None
Gray CountyZone 27.0%93.0%None
Hutchinson CountyZone 2None100%None
Hemphill CountyZone 2None100%None
Hansford CountyZone 2None100%None
Lipscomb CountyZone 2None100%None
Carson CountyZone 2None100%None
Wheeler CountyZone 352.6%47.4%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

Roberts County, Local resources

Radon testing and mitigation in Roberts County

What it means

Roberts County, Questions

Questions about radon in Roberts County

Are radon levels high in Roberts County?

No CDC testing statistics are published here for Roberts County, Texas yet. Of the 8 nearest counties with a figure, within 313 miles, the share of tests at or above 4 pCi/L runs from 1.0% to 71.4%.

Which counties border Roberts County?

Roberts County borders 8 counties: Ochiltree County, Gray County, Hutchinson County, Hemphill County, Hansford County, Lipscomb County, Carson County and Wheeler County.

Products

Roberts County, Products

Testing a home in Roberts County

No CDC figure names Roberts County; the nearest county with one, Potter County (68 miles away), reported 20.0% 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. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Roberts County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Roberts County homes, compared

Explore

Roberts County, Bordering counties

Counties bordering Roberts County

Calculated by Radon411

Roberts County, Cities and towns

Cities and towns in Roberts County

Roberts County is growing: the Census Bureau puts it at 867 residents on July 1, 2025, up 5.2% from 824 in 2020. Spread over its land, that is 0.9 people to the square mile. Miami, its one incorporated place, has 565 residents, 65.2% of the total. CDC publishes no radon test count for Roberts County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).

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

Miami, Roberts County: residents on July 1, 2025
PlaceResidentsSince 2020Share of residents
Miami565+5.2%65.2%

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).

Roberts County, Homes

Homes in Roberts County

Roberts County is a place of houses on their own lots: 88% of its 392 homes are detached single-family houses, against 65% across Texas. The homes are older than Texas' as a whole: half were built before 1966 (1990 for Texas), and 45% date from before 1960. Owners live in 85% of the occupied homes (Texas: 63%), so for most households a test and a fix are their own to order.

Homes in Roberts County, Texas, 2019 to 2023
HomesRoberts CountyTexas
Housing units39211,890,808
Detached houses88%65%
In buildings of 5 or more0%21%
Mobile homes11%7%
Built before 196045%13%
Built since 20008%37%
Middle year built19661990
Owner-occupied85%63%

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