Short-term kitempowerDX
Standard Radon Test short-term mail-in radon test kit
- Lab fee included
Method: Passive sampler
In home: 48 to 96 hours
Locations and reports
Radon Levels in Tyler County, Texas
EPA puts Tyler 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
7.1%
Montgomery County, 75 miles
- Montgomery
- 7.1%
- Texas
- 10.4%
Share at 4+ pCi/L, 85 tests, 2007 to 2016
Ground above low
None
27.3 pts below Texas
- Tyler
- 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 Tyler 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
Tyler County, At a glance
Tyler 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 Tyler County. Montgomery County, 75 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.
Tyler County, Compared
Tyler County radon figures, compared
Calculated by Radon411CDC's county radon counts over the 2007 to 2016 laboratory totals cover 140 Texas counties, and Tyler County is not among them: no year's figure and no ten-year laboratory total names it. 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 Montgomery County (75 miles away) at 7.1%, Harris County (87 miles away) at 3.1% and Galveston County (101 miles away) at 0.0%. 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 Tyler 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.
Tyler County, Geology
The ground under Tyler County
PredictedUSGS's geologic map puts all of Tyler County's mapped land in one class: low radon potential. 95.7% of it lies in the area the map calls Coastal Plain, 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 |
|---|---|---|---|---|
| Coastal Plain | Cretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite. | Low | 7 | 95.7% |
| East Texas Province | Cretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite. | Low | 6 | 4.3% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Tyler County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Tyler County's is. None of the 4 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Tyler County, Local resources
Radon testing and mitigation in Tyler 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
Tyler County, Questions
Questions about radon in Tyler County
Are radon levels high in Tyler County?
No CDC testing statistics are published here for Tyler County, Texas yet. Of the 8 nearest counties with a figure, within 176 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 17.1%.
Which counties border Tyler County?
Tyler County borders 4 counties: Jasper County, Polk County, Hardin County and Angelina County.
Products
Tyler County, Products
Testing a home in Tyler County
No CDC figure names Tyler County; the nearest county with one, Montgomery County (75 miles away), reported 7.1% 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 Tyler 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
MonitorKidde
Radon Detector (RAB) battery digital radon detector with an alarm
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 12 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Tyler County, Bordering counties
Counties bordering Tyler County
Calculated by Radon411- Radon levels in Polk CountyEPA zone 3
100.0%at or above 4 pCi/L
Median 25.5 pCi/L · 1 test
- Radon levels in Jasper CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 2 tests
- Radon levels in Hardin CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.7 pCi/L · 7 tests
- Radon levels in Angelina CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 3 tests
Tyler County, Cities and towns
Cities and towns in Tyler County
The Census Bureau estimates 20,443 residents in Tyler County for July 1, 2025, 619 more than in 2020 (+3.1%). That works out to 22 people per square mile of land. No town dominates: Woodville, the largest, has 2,339 residents, 11.4% of the total. Together its 4 incorporated places hold 22.2% of those residents; the other 77.8% live outside any of them. CDC publishes no radon test count for Tyler County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).
From Woodville to Chester, CDC publishes no figure by town: each reads Tyler County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Woodville | 2,339 | +0.2% | 11.4% |
| Ivanhoe | 1,376 | +3.5% | 6.7% |
| Colmesneil | 549 | +2.0% | 2.7% |
| Chester | 269 | −0.7% | 1.3% |
4 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).
Tyler County, Homes
Homes in Tyler County
Of Tyler County's 9,499 homes, 73% are detached houses, against 65% across Texas; 20% are mobile homes. Half of its homes were built before 1985, close to Texas' 1990: 12% date from before 1960 and 25% from 2000 or later. Owners live in 79% of the occupied homes (Texas: 63%), so for most households a test and a fix are their own to order.
| Homes | Tyler County | Texas |
|---|---|---|
| Housing units | 9,499 | 11,890,808 |
| Detached houses | 73% | 65% |
| In buildings of 5 or more | 3% | 21% |
| Mobile homes | 20% | 7% |
| Built before 1960 | 12% | 13% |
| Built since 2000 | 25% | 37% |
| Middle year built | 1985 | 1990 |
| Owner-occupied | 79% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.