Short-term kit
Air Chek Short-Term radon test kit you hang, lab fee included
- Lab fee included
In home: 72 to 168 hours
Locations and reports
Radon Levels in Sutton County, Texas
EPA puts Sutton 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, 129 miles
- Midland
- 1.0%
- Texas
- 10.4%
Share at 4+ pCi/L, 100 tests, 2007 to 2016
Ground above low
None
27.3 pts below Texas
- Sutton
- 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 Sutton 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
Sutton County, At a glance
Sutton 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 Sutton County. Midland County, 129 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.
Sutton County, Compared
Sutton County radon figures, compared
Calculated by Radon411Sutton 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 Midland County (129 miles away) at 1.0%, Bexar County (141 miles away) at 6.6% and Travis County (165 miles away) at 9.3%. 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 Sutton 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.
Sutton County, Geology
The ground under Sutton County
PredictedUSGS's geologic map puts all of Sutton County's mapped land in one class: low radon potential. All of it lies in the area the map calls Southern High Plains and Plateaus, 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 |
|---|---|---|---|---|
| Southern High Plains and Plateaus | Paleozoic and Mesozoic sandstone, limestone, shale. | 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.
Sutton County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Sutton County's is. Of the 6 counties that border it, 3 have more moderate-potential ground, Val Verde County the most at 14.5%.
The map rates the ground, not the air in any home.
Local help
Sutton County, Local resources
Radon testing and mitigation in Sutton 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
Sutton County, Questions
Questions about radon in Sutton County
Are radon levels high in Sutton County?
No CDC testing statistics are published here for Sutton County, Texas yet. Of the 8 nearest counties with a figure, within 247 miles, the share of tests at or above 4 pCi/L runs from 1.0% to 57.8%.
Which counties border Sutton County?
Sutton County borders 6 counties: Schleicher County, Edwards County, Menard County, Kimble County, Crockett County and Val Verde County.
Products
Sutton County, Products
Testing a home in Sutton County
No CDC figure names Sutton County; the nearest county with one, Midland County (129 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 Sutton 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
RM-63Pro rechargeable radon monitor with a touchscreen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Sutton County, Bordering counties
Counties bordering Sutton County
Calculated by Radon411- Radon levels in Kimble CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 2.1 pCi/L · 1 test
- Radon levels in Schleicher CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Edwards CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Menard CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Crockett CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Val Verde CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Sutton County, Cities and towns
Cities and towns in Sutton County
About 3,203 people live in Sutton County by the Census Bureau's estimate for July 1, 2025, 158 fewer than in 2020 (−4.7%). Spread over its land, that is 2.2 people to the square mile. Sonora, its one incorporated place, has 2,373 residents, 74.1% of the total. CDC publishes no radon test count for Sutton County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).
Sonora is the one incorporated place here; CDC publishes no figure by town, so it reads Sutton County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Sonora | 2,373 | −4.5% | 74.1% |
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).
Sutton County, Homes
Homes in Sutton County
Of Sutton County's 1,740 homes, 73% are detached houses, against 65% across Texas; 16% are mobile homes. The homes are older than Texas' as a whole: half were built before 1974 (1990 for Texas), and 32% date from before 1960. 67% of occupied homes are lived in by their owner (Texas: 63%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Sutton County | Texas |
|---|---|---|
| Housing units | 1,740 | 11,890,808 |
| Detached houses | 73% | 65% |
| In buildings of 5 or more | 6% | 21% |
| Mobile homes | 16% | 7% |
| Built before 1960 | 32% | 13% |
| Built since 2000 | 10% | 37% |
| Middle year built | 1974 | 1990 |
| Owner-occupied | 67% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.