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
Radon Levels in Stonewall County, Texas
EPA puts Stonewall 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
57.8%
Lubbock County, 95 miles
- Lubbock
- 57.8%
- Texas
- 10.4%
Share at 4+ pCi/L, 128 tests, 2007 to 2016
Ground above low
None
27.3 pts below Texas
- Stonewall
- 0.0%
- 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 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Stonewall County
Starts at EPA's action level
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
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 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
Stonewall County, At a glance
Stonewall County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low 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 Stonewall County. Lubbock County, 95 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.
Stonewall County, Compared
Stonewall County radon figures, compared
Calculated by Radon411Stonewall County has no radon test figure of its own from CDC, whose counts over the 2007 to 2016 laboratory totals name 140 other Texas counties and leave it out. 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 Lubbock County (95 miles away) at 57.8%, Midland County (138 miles away) at 1.0% and Randall County (155 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 Stonewall 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.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Stonewall County, Geology
The ground under Stonewall County
PredictedUSGS's geologic map puts all of Stonewall County's mapped land in one class: low radon potential. All of it lies in the area the map calls Central Texas, to which USGS gives a radon index of 7, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Central Texas | Cretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite. | Low | 7 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Stonewall County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Stonewall County's is. Of the 7 counties that border it, 2 have more moderate-potential ground, Kent County the most at 58.1%.
The map rates the ground, not the air in any home.
Local help
Stonewall County, Local resources
Radon testing and mitigation in Stonewall County
- Texas Radon GroupTexas Radon Group, run by Texas Tech University, does not license radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Texas.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
The Texas Radon Group offers free radon test kits for Texas individuals who qualify.
- Compare kits
- Professionals in Texas7 professionals are listed in Texas.
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
Stonewall County, Questions
Questions about radon in Stonewall County
Are radon levels high in Stonewall County?
No CDC testing statistics are published here for Stonewall County, Texas yet. Of the 8 nearest counties with a figure, within 211 miles, the share of tests at or above 4 pCi/L runs from 1.0% to 71.4%.
Which counties border Stonewall County?
Stonewall County borders 7 counties: King County, Kent County, Haskell County, Fisher County, Jones County, Knox County and Dickens County.
Products
Stonewall County, Products
Testing a home in Stonewall County
No CDC figure names Stonewall County; the nearest county with one, Lubbock County (95 miles away), reported 57.8% 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 Stonewall County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Monitor
Corentium Home battery digital radon detector
- C-NRPP 2024/25: Approved
- Battery
- Screen
Method: Alpha spectrometry
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Stonewall County, Bordering counties
Counties bordering Stonewall County
Calculated by Radon411- Radon levels in Jones CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.7 pCi/L · 1 test
- Radon levels in King CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Kent CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Haskell CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Fisher CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Knox CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Dickens CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Stonewall County, Cities and towns
Cities and towns in Stonewall County
About 1,186 people live in Stonewall County by the Census Bureau's estimate for July 1, 2025, 58 fewer than in 2020 (−4.7%). Spread over its land, that is 1.3 people to the square mile. Aspermont, its one incorporated place, has 753 residents, 63.5% of the total. CDC publishes no radon test count for Stonewall County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).
Aspermont is the one incorporated place here; CDC publishes no figure by town, so it reads Stonewall County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Aspermont | 753 | −3.3% | 63.5% |
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).
Stonewall County, Homes
Homes in Stonewall County
Stonewall County is a place of houses on their own lots: 76% of its 733 homes are detached single-family houses, against 65% across Texas. The homes are older than Texas' as a whole: half were built before 1967 (1990 for Texas), and 35% date from before 1960. Owners live in 86% of the occupied homes (Texas: 63%), so for most households a test and a fix are their own to order.
| Homes | Stonewall County | Texas |
|---|---|---|
| Housing units | 733 | 11,890,808 |
| Detached houses | 76% | 65% |
| In buildings of 5 or more | 0% | 21% |
| Mobile homes | 18% | 7% |
| Built before 1960 | 35% | 13% |
| Built since 2000 | 10% | 37% |
| Middle year built | 1967 | 1990 |
| Owner-occupied | 86% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.