
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
EPA puts Mitchell 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
1.0%
Midland County, 72 miles
Share at 4+ pCi/L, 100 tests, 2007 to 2016
Ground above low
61.5%
34.3 pts above Texas
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 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Mitchell 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
Mitchell County, At a glance
Predicted: EPA radon zone
USGS geologic potential: Moderate across 62% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
CDC has published no radon test figures for Mitchell County. Midland County, 72 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.
Mitchell County, Compared
CDC's county radon counts over the 2007 to 2016 laboratory totals cover 140 Texas counties, and Mitchell 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 Midland County (72 miles away) at 1.0%, Lubbock County (104 miles away) at 57.8% and Randall County (192 miles away) at 71.4%. 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 Mitchell County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 62% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Mitchell County, Geology
USGS's geologic map splits Mitchell County: 61.5% of its land is moderate radon potential and 38.5% low. The map puts 61.5% of Mitchell County in the area it calls Northern High Plains and Plateaus and 38.5% in Central Texas. USGS gives the first a radon index of 10, in the moderate band (9 to 11), and the second 7, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Northern High Plains and Plateaus | Tertiary sandstone, siltstone, shale. | Moderate | 10 | 61.5% |
| Central Texas | Cretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite. | Low | 7 | 38.5% |
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 Mitchell County's is. Of the 7 counties that border it, 1 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
Mitchell 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
Mitchell County, Questions
No CDC testing statistics are published here for Mitchell County, Texas yet. Of the 8 nearest counties with a figure, within 227 miles, the share of tests at or above 4 pCi/L runs from 1.0% to 71.4%.
Mitchell County borders 7 counties: Sterling County, Howard County, Nolan County, Scurry County, Coke County, Borden County and Fisher County.
Products
Mitchell County, Products
No CDC figure names Mitchell County; the nearest county with one, Midland County (72 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 Mitchell County.
Test kits and monitors: 1 of 3
Explore
Mitchell County, Bordering counties
100.0%at or above 4 pCi/L
Median 11.1 pCi/L · 1 test
0.0%at or above 4 pCi/L
Median 0.5 pCi/L · 3 tests
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.
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Mitchell County, Cities and towns
About 8,947 people live in Mitchell County by the Census Bureau's estimate for July 1, 2025, 66 fewer than in 2020 (−0.7%). Spread over its land, that is 9.8 people to the square mile. Its largest town, Colorado City, has 3,884 residents, 43.4% of the total. Together its 3 incorporated places hold 51.3% of those residents; the other 48.7% live outside any of them. CDC publishes no radon test count for Mitchell County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).
From Colorado City to Westbrook, CDC publishes no figure by town: each reads Mitchell County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Colorado City | 3,884 | −2.8% | 43.4% |
| Loraine | 503 | −1.4% | 5.6% |
| Westbrook | 206 | +0.5% | 2.3% |
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).
Mitchell County, Homes
Mitchell County is a place of houses on their own lots: 79% of its 3,697 homes are detached single-family houses, against 65% across Texas. The homes are older than Texas' as a whole: half were built before 1958 (1990 for Texas), and 54% date from before 1960. Owners live in 80% of the occupied homes (Texas: 63%), so for most households a test and a fix are their own to order.
| Homes | Mitchell County | Texas |
|---|---|---|
| Housing units | 3,697 | 11,890,808 |
| Detached houses | 79% | 65% |
| In buildings of 5 or more | 2% | 21% |
| Mobile homes | 14% | 7% |
| Built before 1960 | 54% | 13% |
| Built since 2000 | 7% | 37% |
| Middle year built | 1958 | 1990 |
| Owner-occupied | 80% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.