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 Texas County, Oklahoma
EPA puts Texas County in Zone 2, its middle radon zone, and only 6 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Nearest county
8.9%
Oklahoma County, 243 miles
- Oklahoma
- 8.9%
- Oklahoma
- 12.6%
Share at 4+ pCi/L, 135 tests, 2006 to 2015
Ground above low
100.0%
84.8 pts above Oklahoma
- Texas
- 100.0%
- Oklahoma
- 15.2%
Share of land USGS rates moderate or high potential
Tests reported
9
Too few for a share
- Texas
- 9
- Needed
- 30
2006 to 2015, laboratory
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 Texas 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
Texas County, At a glance
Texas County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Texas 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
Radon tests reported for Texas County, 2008 to 2017, laboratory
CDC holds 6 reported tests for Texas County over the 2008 to 2017 laboratory totals, with a median of 4.9 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Texas County beside the counties around it is how this page reads it.
What these figures count
Only 6 tests were reported to CDC for Texas County over 2008 to 2017 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Texas County, Compared
Texas County radon figures, compared
Calculated by Radon411CDC's largest figure for Texas County rests on 9 tests over the 2006 to 2015 laboratory totals, 6 of them at or above 4 pCi/L, so each test moves its share by 11.1 points and no rank or comparison is drawn from it. Results reached as high as 19.4 pCi/L, with a middle value of 5.2 pCi/L.
The nearest counties with a figure are Oklahoma County (243 miles away) at 8.9%, Washington County (310 miles away) at 11.3% and Tulsa County (312 miles away) at 6.0%. Pooled across 53 Oklahoma counties, 12.6% of reported tests reached that level; across every county in the country with a figure, 36.3%.
Statewide for the same period, Delaware County reported the highest share (44.7%) and Tulsa County the lowest (6.0%). EPA's 1993 map puts Texas 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.
Texas County, Geology
The ground under Texas County
PredictedUSGS's geologic map puts all of Texas County's mapped land in one class: moderate radon potential. The map puts 62.2% of Texas County in the area it calls Cimmaron River Valley and 37.4% in High Plains. USGS gives the first a radon index of 10 and the second 9, both in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Cimmaron River Valley | Tertiary and Quaternary sandstone, siltstone, shale, and alluvium overlain by eolian sand and loess. | Moderate | 10 | 62.2% |
| High Plains | Tertiary sandstone, siltstone, shale. | Moderate | 9 | 37.4% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Texas County beside the ground around it
Across Oklahoma 0.6% of the land is rated high; none of Texas County's is. Of the 8 counties that border it, 4 have more high-potential ground, Morton County, KS the most at 36.7%.
The map rates the ground, not the air in any home.
Local help
Texas County, Local resources
Radon testing and mitigation in Texas County
- Oklahoma's radon programDepartment of Environmental QualityOklahoma's radon program answers questions about testing, mitigation and the rules in Oklahoma.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- See the Oklahoma directoryNo professionals are listed in Oklahoma yet. The state program can point you to registered testers and mitigators.
What it means
Texas County, Questions
Questions about radon in Texas County
Are radon levels high in Texas County?
Over the 2008 to 2017 laboratory totals, 66.7% of the radon tests reported to CDC for Texas County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 4.9 pCi/L. Of the 5 nearest counties with a figure, within 373 miles, the share of tests at or above 4 pCi/L runs from 6.0% to 44.7%.
Which counties border Texas County?
Texas County borders 8 counties: Hansford County, TX, Sherman County, TX, Stevens County, KS, Morton County, KS, Ochiltree County, TX, Seward County, KS, Beaver County, OK and Cimarron County, OK.
Products
Texas County, Products
Testing a home in Texas County
No CDC figure names Texas County; the nearest county with one, Oklahoma County (243 miles away), reported 8.9% of its tests at or above 4 pCi/L over the 2006 to 2015 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 Texas County; a long-term test tells the year-round average.
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
MonitorAEGTEST
HOUND-3786 rechargeable radon monitor with a 3.5-inch color screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Ion chamber
First reading: Within 10 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Texas County, Bordering counties
Counties bordering Texas County
Calculated by Radon411- Radon levels in Ochiltree County, TXEPA zone 2
100.0%at or above 4 pCi/L
Median 8.7 pCi/L · 3 tests
- Radon levels in Cimarron County, OKEPA zone 2
100.0%at or above 4 pCi/L
Median 11.5 pCi/L · 1 test
- Radon levels in Sherman County, TXEPA zone 2
0.0%at or above 4 pCi/L
Median 1.3 pCi/L · 1 test
- Radon levels in Beaver County, OKEPA zone 2
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 1 test
- Radon levels in Hansford County, TXEPA zone 2
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Stevens County, KSEPA zone 2
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Morton County, KSEPA zone 2
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Seward County, KSEPA zone 2
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Texas County, Cities and towns
Cities and towns in Texas County
About 20,322 people live in Texas County by the Census Bureau's estimate for July 1, 2025, 969 fewer than in 2020 (−4.6%). Spread over its land, that is 10.0 people to the square mile. Guymon alone is home to 12,241 of them, 60.2% of the total. Together its 7 incorporated places hold 83.4% of those residents; the other 16.6% live outside any of them. Testing is reported here more often than across the state: CDC's 9 reported tests for 2006 to 2015 come to 0.4 for every 1,000 residents (2025 estimate), against 0.2 for Oklahoma.
From Guymon to Hardesty, CDC publishes no figure by town: each reads Texas County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Guymon | 12,241 | −5.2% | 60.2% |
| Hooker | 1,706 | −5.1% | 8.4% |
| Goodwell | 915 | −3.5% | 4.5% |
| Texhoma | 825 | −4.2% | 4.1% |
| Tyrone | 745 | +2.3% | 3.7% |
| Optima | 313 | −5.2% | 1.5% |
| Hardesty | 196 | −3.4% | 1.0% |
7 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).
Texas County, Homes
Homes in Texas County
Of Texas County's 8,462 homes, 68% are detached houses, against 73% across Oklahoma; 18% are mobile homes. Half of its homes were built before 1975, close to Oklahoma's 1980: 25% date from before 1960 and 14% from 2000 or later. 69% of occupied homes are lived in by their owner (Oklahoma: 66%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Texas County | Oklahoma |
|---|---|---|
| Housing units | 8,462 | 1,763,036 |
| Detached houses | 68% | 73% |
| In buildings of 5 or more | 8% | 12% |
| Mobile homes | 18% | 9% |
| Built before 1960 | 25% | 21% |
| Built since 2000 | 14% | 25% |
| Middle year built | 1975 | 1980 |
| Owner-occupied | 69% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.