
Short-term kit![]()
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
Locations and reports
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
Share at 4+ pCi/L, 70 tests, 2007 to 2016
Ground above low
100.0%
72.7 pts above Texas
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 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Roberts County
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
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
Predicted: EPA radon zone
Roberts County is a
USGS geologic potential: Moderate across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
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.
Roberts County, Compared
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.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Roberts County, Geology
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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Northern High Plains and Plateaus | Tertiary sandstone, siltstone, shale. | Moderate | 10 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
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%.
The map rates the ground, not the air in any home.
Local help
Roberts County, Local resources
The Texas Radon Group offers free radon test kits for Texas individuals who qualify.
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
Roberts County, Questions
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%.
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
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 monitors: 1 of 3
Explore
Roberts County, Bordering counties
100.0%at or above 4 pCi/L
Median 12.1 pCi/L · 2 tests
100.0%at or above 4 pCi/L
Median 7.3 pCi/L · 1 test
100.0%at or above 4 pCi/L
Median 36.2 pCi/L · 2 tests
20.0%at or above 4 pCi/L
Median 2.7 pCi/L · 5 tests
0.0%at or above 4 pCi/L
Median 1.9 pCi/L · 3 tests
0.0%at or above 4 pCi/L
Median 3.9 pCi/L · 1 test
0.0%at or above 4 pCi/L
Median 2.7 pCi/L · 3 tests
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Roberts County, Cities and towns
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.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Miami | 565 | +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
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 | Roberts County | Texas |
|---|---|---|
| Housing units | 392 | 11,890,808 |
| Detached houses | 88% | 65% |
| In buildings of 5 or more | 0% | 21% |
| Mobile homes | 11% | 7% |
| Built before 1960 | 45% | 13% |
| Built since 2000 | 8% | 37% |
| Middle year built | 1966 | 1990 |
| Owner-occupied | 85% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.