Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Concho County, Texas
EPA puts Concho 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, 133 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
- Concho
- 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 Concho 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
Concho County, At a glance
Concho 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 Concho County. Midland County, 133 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.
Concho County, Compared
Concho County radon figures, compared
Calculated by Radon411Concho 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 (133 miles away) at 1.0%, Travis County (141 miles away) at 9.3% and Williamson County (142 miles away) at 2.0%. 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 Concho 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.
Concho County, Geology
The ground under Concho County
PredictedUSGS's geologic map puts all of Concho County's mapped land in one class: low radon potential. The map puts 52.3% of Concho County in the area it calls Central Texas and 47.7% in Southern High Plains and Plateaus. USGS gives both 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 | 52.3% |
| Southern High Plains and Plateaus | Paleozoic and Mesozoic sandstone, limestone, shale. | Low | 7 | 47.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Concho County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Concho County's is. Of the 6 counties that border it, 2 have more moderate-potential ground, McCulloch County the most at 21.5%.
The map rates the ground, not the air in any home.
Local help
Concho County, Local resources
Radon testing and mitigation in Concho 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
Concho County, Questions
Questions about radon in Concho County
Are radon levels high in Concho County?
No CDC testing statistics are published here for Concho County, Texas yet. Of the 8 nearest counties with a figure, within 194 miles, the share of tests at or above 4 pCi/L runs from 1.0% to 57.8%.
Which counties border Concho County?
Concho County borders 6 counties: McCulloch County, Menard County, Tom Green County, Runnels County, Coleman County and Schleicher County.
Products
Concho County, Products
Testing a home in Concho County
No CDC figure names Concho County; the nearest county with one, Midland County (133 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 Concho County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Monitor
Hello Radon C battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Concho County, Bordering counties
Counties bordering Concho County
Calculated by Radon411- Radon levels in Tom Green CountyEPA zone 3
33.3%at or above 4 pCi/L
Median 2.0 pCi/L · 6 tests
- Radon levels in Runnels CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.7 pCi/L · 1 test
- Radon levels in McCulloch 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 Coleman CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Schleicher CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Concho County, Cities and towns
Cities and towns in Concho County
Concho County is growing: the Census Bureau puts it at 3,607 residents on July 1, 2025, up 8.7% from 3,317 in 2020. Spread over its land, that is 3.7 people to the square mile. Eden alone is home to 2,248 of them, 62.3% of the total. Together its 2 incorporated places hold 69.9% of those residents; the other 30.1% live outside any of them. CDC publishes no radon test count for Concho County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).
From Eden to Paint Rock, CDC publishes no figure by town: each reads Concho County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Eden | 2,248 | +6.5% | 62.3% |
| Paint Rock | 272 | +12.9% | 7.5% |
2 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).
Concho County, Homes
Homes in Concho County
Concho County is a place of houses on their own lots: 79% of its 1,420 homes are detached single-family houses, against 65% across Texas. The homes are older than Texas' as a whole: half were built before 1972 (1990 for Texas), and 40% date from before 1960. Owners live in 78% of the occupied homes (Texas: 63%), so for most households a test and a fix are their own to order.
| Homes | Concho County | Texas |
|---|---|---|
| Housing units | 1,420 | 11,890,808 |
| Detached houses | 79% | 65% |
| In buildings of 5 or more | under 1% | 21% |
| Mobile homes | 20% | 7% |
| Built before 1960 | 40% | 13% |
| Built since 2000 | 16% | 37% |
| Middle year built | 1972 | 1990 |
| Owner-occupied | 78% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.