Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
Locations and reports
Radon Levels in Culberson County, Texas
EPA puts Culberson 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
0.0%
El Paso County, 104 miles
- El Paso
- 0.0%
- Texas
- 10.4%
Share at 4+ pCi/L, 55 tests, 2007 to 2016
Ground above low
100.0%
72.7 pts above Texas
- Culberson
- 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
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Culberson 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
Culberson County, At a glance
Culberson County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Culberson 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
No CDC test figures here
CDC has published no radon test figures for Culberson County. El Paso County, 104 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.
Culberson County, Compared
Culberson County radon figures, compared
Calculated by Radon411Culberson 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 El Paso County (104 miles away) at 0.0%, Midland County (149 miles away) at 1.0% and Lubbock County (217 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 Culberson 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.
Culberson County, Geology
The ground under Culberson County
PredictedUSGS's geologic map puts all of Culberson County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Western Mountains and Basins, to which USGS gives a radon index of 9, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Western Mountains and Basins | Precambrian igneous rocks, silicic volcanic rocks, and alluvium. | Moderate | 9 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Culberson County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Culberson County's is. Of the 5 counties that border it, 2 have more high-potential ground, Otero County, NM the most at 39.5%.
The map rates the ground, not the air in any home.
Local help
Culberson County, Local resources
Radon testing and mitigation in Culberson 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
Culberson County, Questions
Questions about radon in Culberson County
Are radon levels high in Culberson County?
No CDC testing statistics are published here for Culberson County, Texas yet. Of the 8 nearest counties with a figure, within 414 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 71.4%.
Which counties border Culberson County?
Culberson County borders 5 counties: Reeves County, TX, Jeff Davis County, TX, Hudspeth County, TX, Eddy County, NM and Otero County, NM.
Products
Culberson County, Products
Testing a home in Culberson County
No CDC figure names Culberson County; the nearest county with one, El Paso County (104 miles away), reported 0.0% 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 Culberson County; a long-term test tells the year-round average.
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
MonitorPYZYCKYH
RD17 plug-in radon detector with a rechargeable battery and color screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 6 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Culberson County, Bordering counties
Counties bordering Culberson County
Calculated by Radon411- Radon levels in Jeff Davis County, TXEPA zone 2
28.6%at or above 4 pCi/L
Median 1.1 pCi/L · 7 tests
- Radon levels in Otero County, NMEPA zone 2
13.6%at or above 4 pCi/L
Median 1.4 pCi/L · 22 tests
- Radon levels in Eddy County, NMEPA zone 2
5.9%at or above 4 pCi/L
Median 0.1 pCi/L · 17 tests
- Radon levels in Reeves County, TXEPA zone 2
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Hudspeth County, TXEPA zone 2
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Culberson County, Cities and towns
Cities and towns in Culberson County
The Census Bureau estimates 2,267 residents in Culberson County for July 1, 2025, 82 more than in 2020 (+3.8%). Spread over its land, that is 0.6 people to the square mile. Van Horn, its one incorporated place, has 2,020 residents, 89.1% of the total. CDC publishes no radon test count for Culberson County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).
Van Horn is the one incorporated place here; CDC publishes no figure by town, so it reads Culberson County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Van Horn | 2,020 | +4.8% | 89.1% |
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).
Culberson County, Homes
Homes in Culberson County
Culberson County is a place of houses on their own lots: 81% of its 959 homes are detached single-family houses, against 65% across Texas. The homes are older than Texas' as a whole: half were built before 1974 (1990 for Texas), and 16% date from before 1960. 74% 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 | Culberson County | Texas |
|---|---|---|
| Housing units | 959 | 11,890,808 |
| Detached houses | 81% | 65% |
| In buildings of 5 or more | 2% | 21% |
| Mobile homes | 16% | 7% |
| Built before 1960 | 16% | 13% |
| Built since 2000 | 8% | 37% |
| Middle year built | 1974 | 1990 |
| Owner-occupied | 74% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.