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 Clay County, Mississippi
EPA puts Clay 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
Nearest county
18.6%
Franklin County, 76 miles
- Franklin
- 18.6%
Share at 4+ pCi/L, 210 tests, 2006 to 2015
Ground above low
83.2%
75.1 pts above MS
- Clay
- 83.2%
- MS
- 8.1%
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 Clay 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
Clay County, At a glance
Clay County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Clay County is a
USGS geologic potential: Moderate across 83% 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 Clay County. Franklin County, AL, 76 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.
Clay County, Compared
Clay County radon figures, compared
Calculated by Radon411Clay County is in a state CDC's county radon counts do not reach: no Mississippi county has a figure, while 2,669 counties elsewhere do over the 2006 to 2015 laboratory totals. Across every county in the country with a figure (2,669), 36.3% of reported tests reached that level; no Mississippi county contributes to that pool.
The nearest counties with a figure are Franklin County, AL (76 miles away) at 18.6%, Tuscaloosa County, AL (77 miles away) at 10.1% and Colbert County, AL (91 miles away) at 36.6%.
EPA's 1993 map puts Clay County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 83% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Clay County, Geology
The ground under Clay County
PredictedMost of the ground under Clay County is one class on USGS's geologic map: 83.2% of its land is moderate radon potential, with 16.8% low. The map puts 83.2% of Clay County in the area it calls Pontotoc Ridge/Black Prairies and 8.9% in Tombigbee Hills, with one smaller area beside them. USGS gives the first a radon index of 9, in the moderate band (9 to 11), and the second 8, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Pontotoc Ridge/Black Prairies | Glauconitic sand, clay, sandy limestone, micaceous chalk, and lime. | Moderate | 9 | 83.2% |
| Tombigbee Hills | Clay, sand, sandstone, chalk, chalky marl, quartzose, chert gravels, and quartz sand. | Low | 8 | 8.9% |
| North Central Hills/Flatwoods | Tertiary nonmarine to deltaic sediments ranging from sand to clay. | Low | 8 | 7.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Clay County beside the ground around it
Across Mississippi 0.1% of the land is rated high; none of Clay County's is. Of the 5 counties that border it, none has as large a share of moderate-potential ground; Chickasaw County comes nearest at 63.3%.
The map rates the ground, not the air in any home.
Local help
Clay County, Local resources
Radon testing and mitigation in Clay County
- Mississippi Radon ProgramMississippi Radon Program, run by Mississippi State Department of Health, answers questions about testing, mitigation and the rules in Mississippi.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- See the Mississippi directoryNo professionals are listed in Mississippi yet. The state program can point you to registered testers and mitigators.
What Mississippi's program says
- Phone
- 1-800-626-7739
What it means
Clay County, Questions
Questions about radon in Clay County
Are radon levels high in Clay County?
No CDC testing statistics are published here for Clay County, Mississippi yet. Of the 8 nearest counties with a figure, within 112 miles, the share of tests at or above 4 pCi/L runs from 8.2% to 36.6%.
Which counties border Clay County?
Clay County borders 5 counties: Oktibbeha County, Chickasaw County, Lowndes County, Monroe County and Webster County.
Products
Clay County, Products
Testing a home in Clay County
No CDC figure names Clay County; the nearest county with one, Franklin County, AL (76 miles away), reported 18.6% of its tests at or above 4 pCi/L over the 2006 to 2015 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 Clay County; a long-term test tells the year-round average.
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
Monitor
Wave Plus battery radon and air quality monitor
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- App only
Method: Alpha spectrometry
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Clay County, Bordering counties
Counties bordering Clay County
Calculated by Radon411counties bordering Clay County: 1 of 5
Clay County, Cities and towns
Cities and towns in Clay County
About 18,238 people live in Clay County by the Census Bureau's estimate for July 1, 2025, 382 fewer than in 2020 (−2.1%). That works out to 44 people per square mile of land. West Point, its one incorporated place, has 9,743 residents, 53.4% of the total.
West Point is the one incorporated place here; CDC publishes no figure by town, so it reads Clay County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| West Point | 9,743 | −3.4% | 53.4% |
One incorporated place, 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).
Clay County, Homes
Homes in Clay County
Of Clay County's 9,035 homes, 67% are detached houses, against 69% across Mississippi; 20% are mobile homes. Half of its homes were built before 1981, close to Mississippi's 1986: 19% date from before 1960 and 19% from 2000 or later. 71% of occupied homes are lived in by their owner (Mississippi: 69%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Clay County | Mississippi |
|---|---|---|
| Housing units | 9,035 | 1,332,811 |
| Detached houses | 67% | 69% |
| In buildings of 5 or more | 7% | 9% |
| Mobile homes | 20% | 15% |
| Built before 1960 | 19% | 15% |
| Built since 2000 | 19% | 28% |
| Middle year built | 1981 | 1986 |
| Owner-occupied | 71% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.