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
Radon Levels in Martin County, Texas
EPA puts Martin 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
Highest bordering
1.0%
Midland County
- Midland
- 1.0%
1 of 7 neighbours have 30+ tests, 2007 to 2016
Nearest county
1.0%
Midland County, 30 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
- Martin
- 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 Martin 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
Martin County, At a glance
Martin 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 Martin County. Midland County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 1.0% of its tests at or above 4 pCi/L.
Martin County, Compared
Martin County radon figures, compared
Calculated by Radon411Martin 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%.
Midland County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 1.0% of its tests at or above 4 pCi/L. Farther out, Lubbock County (90 miles away) at 57.8%, Randall County (183 miles away) at 71.4% and Potter County (213 miles away) at 20.0% have figures too. 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 Martin 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.
Martin County, Geology
The ground under Martin County
PredictedUSGS's geologic map puts all of Martin County's mapped land in one class: low radon potential. All of it lies in the area the map calls Southern High Plains and Plateaus, 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 |
|---|---|---|---|---|
| Southern High Plains and Plateaus | Paleozoic and Mesozoic sandstone, limestone, shale. | Low | 7 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Martin County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Martin County's is. Every one of the 7 counties that border it has more moderate-potential ground, Borden County the most at 99.0%.
The map rates the ground, not the air in any home.
Local help
Martin County, Local resources
Radon testing and mitigation in Martin 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
Martin County, Questions
Questions about radon in Martin County
Are radon levels high in Martin County?
No CDC testing statistics are published here for Martin County, Texas yet. Midland County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 1.0% of its tests at or above 4 pCi/L.
Which counties border Martin County?
Martin County borders 7 counties: Dawson County, Howard County, Midland County, Glasscock County, Andrews County, Borden County and Gaines County.
Products
Martin County, Products
Testing a home in Martin County
No CDC figure names Martin County; the nearest county with one, Midland County (30 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 Martin County.
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
MonitorForensics Detectors
FD-65-RADON rechargeable radon detector with a 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
Martin County, Bordering counties
Counties bordering Martin County
Calculated by Radon411- Radon levels in Dawson CountyEPA zone 3
25.0%at or above 4 pCi/L
Median 3.0 pCi/L · 4 tests
- Radon levels in Midland CountyEPA zone 3
1.0%at or above 4 pCi/L
Median 0.7 pCi/L · 100 tests
- Radon levels in Howard CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.5 pCi/L · 3 tests
- Radon levels in Glasscock CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Andrews CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Borden CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Gaines CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Martin County, Cities and towns
Cities and towns in Martin County
Martin County's population has barely moved since 2020: 5,284 residents on July 1, 2025 against 5,259 then, by the Census Bureau's estimates. Spread over its land, that is 5.8 people to the square mile. Midland, the largest place on its list (147,615 residents in all), extends beyond Martin County, so no share of the total is worked out for it. CDC publishes no radon test count for Martin County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).
From Midland to Ackerly, CDC publishes no figure by town: each reads Martin County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Midlandextends beyond Martin County | 147,615 | +10.8% | Counted whole |
| Stanton | 2,694 | +1.2% | 51.0% |
| Ackerlyextends beyond Martin County | 269 | +1.5% | Counted whole |
3 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). A place that extends beyond Martin County is counted whole, so it has no share.
Martin County, Homes
Homes in Martin County
Of Martin County's 2,207 homes, 72% are detached houses, against 65% across Texas; 19% are mobile homes. The homes are older than Texas' as a whole: half were built before 1973 (1990 for Texas), and 24% date from before 1960. 67% 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 | Martin County | Texas |
|---|---|---|
| Housing units | 2,207 | 11,890,808 |
| Detached houses | 72% | 65% |
| In buildings of 5 or more | 0% | 21% |
| Mobile homes | 19% | 7% |
| Built before 1960 | 24% | 13% |
| Built since 2000 | 16% | 37% |
| Middle year built | 1973 | 1990 |
| Owner-occupied | 67% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.