
Short-term kit![]()
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
EPA puts Titus County in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2007 to 2016, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Nearest county
9.1%
Smith County, 61 miles
Share at 4+ pCi/L, 33 tests, 2007 to 2016
Ground above low
None
27.3 pts below Texas
Share of land USGS rates moderate or high potential
Tests reported
1
Too few for a share
2007 to 2016, laboratory
EPA radon zone
Zone 3
Lower potential
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Titus County
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
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
Titus County, At a glance
Predicted: EPA radon zone
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
CDC holds 1 reported test for Titus County over the 2007 to 2016 laboratory totals, a result of 0.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Titus County beside the counties around it is how this page reads it.
Only 1 test was reported to CDC for Titus County over 2007 to 2016 (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: 2007 to 2016, laboratory. Measured data period: 2005 to 2016 (every CDC figure on file).
Titus County, Compared
CDC's largest figure for Titus County rests on 1 test over the 2007 to 2016 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 100.0 points and no rank or comparison is drawn from it. Results reached as high as 0.1 pCi/L, with a middle value of 0.1 pCi/L.
The nearest counties with a figure are Smith County (61 miles away) at 9.1%, Collin County (93 miles away) at 7.7% and Dallas County (110 miles away) at 8.7%. Pooled across 140 Texas counties, 10.4% of reported tests reached that level; across every county in the country with a figure, 35.8%.
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 Titus 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.
Titus County, Geology
USGS's geologic map puts all of Titus County's mapped land in one class: low radon potential. All of it lies in the area the map calls East Texas Province, to which USGS gives a radon index of 6, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| East Texas Province | Cretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite. | Low | 6 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Across Texas 0.5% of the land is rated high; none of Titus County's is. Of the 4 counties that border it, 1 has more moderate-potential ground, Red River County the most at 20.6%.
The map rates the ground, not the air in any home.
Local help
Titus County, Local resources
The Texas Radon Group offers free radon test kits for Texas individuals who qualify.
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
Titus County, Questions
Over the 2007 to 2016 laboratory totals, 0.0% of the radon tests reported to CDC for Titus County, Texas were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.1 pCi/L. Of the 8 nearest counties with a figure, within 203 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 17.1%.
Titus County borders 4 counties: Franklin County, Morris County, Camp County and Red River County.
Products
Titus County, Products
No CDC figure names Titus County; the nearest county with one, Smith County (61 miles away), reported 9.1% 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 Titus County.
Test kits and monitors: 1 of 3
Explore
Titus County, Bordering counties
0.0%at or above 4 pCi/L
Median 0.9 pCi/L · 3 tests
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Titus County, Cities and towns
The Census Bureau estimates 31,563 residents in Titus County for July 1, 2025, 265 more than in 2020 (+0.8%). That works out to 78 people per square mile of land. Mount Pleasant alone is home to 16,225 of them, 51.4% of the total. Together its 4 incorporated places hold 54.5% of those residents; the other 45.5% live outside any of them. Reported testing is thin here: 1 test over 2007 to 2016, or under 0.1 for every 1,000 residents (2025 estimate), where Texas as a whole comes to 0.1.
From Mount Pleasant to Miller's Cove, CDC publishes no figure by town: each reads Titus County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Mount Pleasant | 16,225 | +0.7% | 51.4% |
| Talco | 485 | −1.8% | 1.5% |
| Winfield | 416 | +2.0% | 1.3% |
| Miller's Cove | 76 | +8.6% | 0.2% |
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).
Titus County, Homes
Of Titus County's 12,110 homes, 69% are detached houses, against 65% across Texas; 15% are mobile homes. Half of its homes were built before 1985, close to Texas' 1990: 12% date from before 1960 and 23% from 2000 or later. 69% 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 | Titus County | Texas |
|---|---|---|
| Housing units | 12,110 | 11,890,808 |
| Detached houses | 69% | 65% |
| In buildings of 5 or more | 11% | 21% |
| Mobile homes | 15% | 7% |
| Built before 1960 | 12% | 13% |
| Built since 2000 | 23% | 37% |
| Middle year built | 1985 | 1990 |
| Owner-occupied | 69% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.