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 Clarke County, Mississippi
EPA puts Clarke 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
4.4%
Mobile County, 91 miles
- Mobile
- 4.4%
Share at 4+ pCi/L, 45 tests, 2006 to 2015
Ground above low
None
8.1 pts below MS
- Clarke
- 0.0%
- 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 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Clarke 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
Clarke County, At a glance
Clarke 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 Clarke County. Mobile County, AL, 91 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.
Clarke County, Compared
Clarke County radon figures, compared
Calculated by Radon411No Mississippi county, Clarke County included, has a radon test figure from CDC; over the 2006 to 2015 laboratory totals, the agency's counts name 2,669 counties in other states. 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 Mobile County, AL (91 miles away) at 4.4%, Tuscaloosa County, AL (110 miles away) at 10.1% and Escambia County, FL (123 miles away) at 0.0%.
EPA's 1993 map puts Clarke 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.
Clarke County, Geology
The ground under Clarke County
PredictedUSGS's geologic map puts all of Clarke County's mapped land in one class: low radon potential. The map puts 73.5% of Clarke County in the area it calls North Central Hills/Flatwoods and 26.5% in Jackson Prairies. USGS gives both a radon index of 8, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| North Central Hills/Flatwoods | Tertiary nonmarine to deltaic sediments ranging from sand to clay. | Low | 8 | 73.5% |
| Jackson Prairies | Sand, marl, clay, and limestone. | Low | 8 | 26.5% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Clarke County beside the ground around it
Across Mississippi 0.1% of the land is rated high; none of Clarke County's is. None of the 5 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Clarke County, Local resources
Radon testing and mitigation in Clarke 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
Clarke County, Questions
Questions about radon in Clarke County
Are radon levels high in Clarke County?
No CDC testing statistics are published here for Clarke County, Mississippi yet. Of the 8 nearest counties with a figure, within 146 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 12.8%.
Which counties border Clarke County?
Clarke County borders 5 counties: Choctaw County, AL, Lauderdale County, MS, Jasper County, MS, Newton County, MS and Wayne County, MS.
Products
Clarke County, Products
Testing a home in Clarke County
No CDC figure names Clarke County; the nearest county with one, Mobile County, AL (91 miles away), reported 4.4% 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. 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 Clarke 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
Clarke County, Bordering counties
Counties bordering Clarke County
Calculated by Radon411counties bordering Clarke County: 1 of 5
Clarke County, Cities and towns
Cities and towns in Clarke County
About 15,102 people live in Clarke County by the Census Bureau's estimate for July 1, 2025, 443 fewer than in 2020 (−2.8%). That works out to 22 people per square mile of land. No town dominates: Quitman, the largest, has 1,925 residents, 12.7% of the total. Together its 5 incorporated places hold 25.3% of those residents; the other 74.7% live outside any of them.
From Quitman to Pachuta, CDC publishes no figure by town: each reads Clarke County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Quitman | 1,925 | −6.1% | 12.7% |
| Stonewall | 833 | −4.9% | 5.5% |
| Enterprise | 475 | −4.8% | 3.1% |
| Shubuta | 395 | −2.5% | 2.6% |
| Pachuta | 195 | −4.9% | 1.3% |
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).
Clarke County, Homes
Homes in Clarke County
Of Clarke County's 7,635 homes, 69% are detached houses, against 69% across Mississippi; 27% are mobile homes. Half of its homes were built before 1985, close to Mississippi's 1986: 13% date from before 1960 and 24% from 2000 or later. Owners live in 84% of the occupied homes (Mississippi: 69%), so for most households a test and a fix are their own to order.
| Homes | Clarke County | Mississippi |
|---|---|---|
| Housing units | 7,635 | 1,332,811 |
| Detached houses | 69% | 69% |
| In buildings of 5 or more | 1% | 9% |
| Mobile homes | 27% | 15% |
| Built before 1960 | 13% | 15% |
| Built since 2000 | 24% | 28% |
| Middle year built | 1985 | 1986 |
| Owner-occupied | 84% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.