Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
Locations and reports
Radon Levels in Crosby County, Texas
EPA puts Crosby County in Zone 2, its middle radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
57.8%
Lubbock County
- Lubbock
- 57.8%
1 of 8 neighbours have 30+ tests, 2007 to 2016
Nearest county
57.8%
Lubbock County, 30 miles
- Lubbock
- 57.8%
- Texas
- 10.4%
Share at 4+ pCi/L, 128 tests, 2007 to 2016
Ground above low
100.0%
72.7 pts above Texas
- Crosby
- 100.0%
- 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 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Crosby 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
Crosby County, At a glance
Crosby County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Crosby 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
No CDC test figures here
CDC has published no radon test figures for Crosby County. Lubbock County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 57.8% of its tests at or above 4 pCi/L.
Crosby County, Compared
Crosby County radon figures, compared
Calculated by Radon411Crosby 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%.
Lubbock County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 57.8% of its tests at or above 4 pCi/L. Farther out, Randall County (99 miles away) at 71.4%, Midland County (128 miles away) at 1.0% and Potter County (128 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 Crosby 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.
Crosby County, Geology
The ground under Crosby County
PredictedUSGS's geologic map puts all of Crosby County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Northern High Plains and Plateaus, to which USGS gives a radon index of 10, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Northern High Plains and Plateaus | Tertiary sandstone, siltstone, shale. | Moderate | 10 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Crosby County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Crosby County's is. Of the 8 counties that border it, none has as large a share of moderate-potential ground; Garza County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Crosby County, Local resources
Radon testing and mitigation in Crosby 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
Crosby County, Questions
Questions about radon in Crosby County
Are radon levels high in Crosby County?
No CDC testing statistics are published here for Crosby County, Texas yet. Lubbock County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 57.8% of its tests at or above 4 pCi/L.
Which counties border Crosby County?
Crosby County borders 8 counties: Garza County, Lubbock County, Dickens County, Floyd County, Kent County, Lynn County, Motley County and Hale County.
Products
Crosby County, Products
Testing a home in Crosby County
No CDC figure names Crosby County; the nearest county with one, Lubbock County (30 miles away), reported 57.8% 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. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Crosby 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
MonitorSafetySiren
Pro4 plug-in radon detector with a display and alarm
- C-NRPP 2024/25: Not included
- Plug-in
- Alarm
- Screen
First reading: Within 48 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Crosby County, Bordering counties
Counties bordering Crosby County
Calculated by Radon411- Radon levels in Hale CountyEPA zone 2
83.3%at or above 4 pCi/L
Median 7.8 pCi/L · 12 tests
- Radon levels in Lubbock CountyEPA zone 2
57.8%at or above 4 pCi/L
Median 4.8 pCi/L · 128 tests
- Radon levels in Garza CountyEPA zone 2
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Dickens CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Floyd CountyEPA zone 2
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Kent CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Lynn CountyEPA zone 2
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Motley CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Crosby County, Cities and towns
Cities and towns in Crosby County
About 4,852 people live in Crosby County by the Census Bureau's estimate for July 1, 2025, 244 fewer than in 2020 (−4.8%). Spread over its land, that is 5.4 people to the square mile. Its largest town, Ralls, has 1,556 residents, 32.1% of the total. Together its 3 incorporated places hold 79.8% of those residents; the other 20.2% live outside any of them. CDC publishes no radon test count for Crosby County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).
From Ralls to Lorenzo, CDC publishes no figure by town: each reads Crosby County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Ralls | 1,556 | −5.6% | 32.1% |
| Crosbyton | 1,407 | −4.7% | 29.0% |
| Lorenzo | 910 | −5.2% | 18.8% |
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).
Crosby County, Homes
Homes in Crosby County
Crosby County is a place of houses on their own lots: 80% of its 2,668 homes are detached single-family houses, against 65% across Texas. The homes are older than Texas' as a whole: half were built before 1965 (1990 for Texas), and 39% date from before 1960. 72% 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 | Crosby County | Texas |
|---|---|---|
| Housing units | 2,668 | 11,890,808 |
| Detached houses | 80% | 65% |
| In buildings of 5 or more | 1% | 21% |
| Mobile homes | 9% | 7% |
| Built before 1960 | 39% | 13% |
| Built since 2000 | 7% | 37% |
| Middle year built | 1965 | 1990 |
| Owner-occupied | 72% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.