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 Milam County, Texas
EPA puts Milam 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
14.3%
Bell County
- Bell
- 14.3%
- Williamson
- 2.0%
2 of 6 neighbours have 30+ tests, 2007 to 2016
Nearest county
14.3%
Bell County, 34 miles
- Bell
- 14.3%
- Texas
- 10.4%
Share at 4+ pCi/L, 35 tests, 2007 to 2016
Ground above low
None
27.3 pts below Texas
- Milam
- 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 Milam 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
Milam County, At a glance
Milam 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 Milam County. Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Bell County reported the largest share at or above 4 pCi/L, 14.3%, and Williamson County the smallest, 2.0%.
Milam County, Compared
Milam County radon figures, compared
Calculated by Radon411CDC's county radon counts over the 2007 to 2016 laboratory totals cover 140 Texas counties, and Milam 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%.
Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Bell County reported the largest share at or above 4 pCi/L, 14.3%, and Williamson County the smallest, 2.0%. Farther out, Brazos County (41 miles away) at 0.0%, McLennan County (54 miles away) at 17.1% and Travis County (57 miles away) at 9.3% 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 Milam 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.
Milam County, Geology
The ground under Milam County
PredictedUSGS's geologic map puts all of Milam 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.
Milam County beside the ground around it
Across Texas 0.5% of the land is rated high; none of Milam County's is. Of the 6 counties that border it, 3 have more moderate-potential ground, Bell County the most at 17.8%.
The map rates the ground, not the air in any home.
Local help
Milam County, Local resources
Radon testing and mitigation in Milam 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
Milam County, Questions
Questions about radon in Milam County
Are radon levels high in Milam County?
No CDC testing statistics are published here for Milam County, Texas yet. Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Bell County reported the largest share at or above 4 pCi/L, 14.3%, and Williamson County the smallest, 2.0%.
Which counties border Milam County?
Milam County borders 6 counties: Burleson County, Falls County, Robertson County, Lee County, Bell County and Williamson County.
Products
Milam County, Products
Testing a home in Milam County
No CDC figure names Milam County; the nearest county with one, Bell County (34 miles away), reported 14.3% 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 Milam 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
Monitor
RadonEye RD200 plug-in continuous radon monitor
- C-NRPP 2024/25: Approved
- Plug-in
- Bluetooth
- Alarm
- Screen, app
Method: Ion chamber
First reading: Within 10 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Milam County, Bordering counties
Counties bordering Milam County
Calculated by Radon411- Radon levels in Bell CountyEPA zone 3
14.3%at or above 4 pCi/L
Median 1.1 pCi/L · 35 tests
- Radon levels in Williamson CountyEPA zone 3
2.0%at or above 4 pCi/L
Median 0.7 pCi/L · 98 tests
- Radon levels in Robertson CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.8 pCi/L · 7 tests
- Radon levels in Burleson CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Falls CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Lee CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Milam County, Cities and towns
Cities and towns in Milam County
Milam County is growing: the Census Bureau puts it at 26,258 residents on July 1, 2025, up 6.0% from 24,780 in 2020. That works out to 26 people per square mile of land. Its largest town, Rockdale, has 5,688 residents, 21.7% of the total. CDC publishes no radon test count for Milam County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).
From Rockdale to Buckholts, CDC publishes no figure by town: each reads Milam County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Rockdale | 5,688 | +7.4% | 21.7% |
| Cameron | 5,489 | +3.5% | 20.9% |
| Thorndaleextends beyond Milam County | 1,456 | +15.6% | Counted whole |
| Milano | 432 | +8.3% | 1.6% |
| Buckholts | 387 | +6.0% | 1.5% |
5 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 Milam County is counted whole, so it has no share.
Milam County, Homes
Homes in Milam County
Of Milam County's 11,581 homes, 75% are detached houses, against 65% across Texas; 18% are mobile homes. The homes are older than Texas' as a whole: half were built before 1981 (1990 for Texas), and 22% date from before 1960. Owners live in 77% of the occupied homes (Texas: 63%), so for most households a test and a fix are their own to order.
| Homes | Milam County | Texas |
|---|---|---|
| Housing units | 11,581 | 11,890,808 |
| Detached houses | 75% | 65% |
| In buildings of 5 or more | 3% | 21% |
| Mobile homes | 18% | 7% |
| Built before 1960 | 22% | 13% |
| Built since 2000 | 27% | 37% |
| Middle year built | 1981 | 1990 |
| Owner-occupied | 77% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.