Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
Locations and reports
Radon Levels in Warren County, Mississippi
EPA puts Warren 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
0.0%
Tangipahoa Parish, 122 miles
- Tangipahoa Parish
- 0.0%
Share at 4+ pCi/L, 43 tests, 2006 to 2015
Ground above low
None
8.1 pts below MS
- Warren
- 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 Warren 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
Warren County, At a glance
Warren 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 Warren County. Tangipahoa Parish, LA, 122 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.
Warren County, Compared
Warren County radon figures, compared
Calculated by Radon411No Mississippi county, Warren 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 Tangipahoa Parish, LA (122 miles away) at 0.0%, East Baton Rouge Parish, LA (126 miles away) at 0.0% and Jefferson Parish, LA (182 miles away) at 1.5%.
EPA's 1993 map puts Warren 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.
Warren County, Geology
The ground under Warren County
PredictedUSGS's geologic map puts all of Warren County's mapped land in one class: low radon potential. The map puts 52.3% of Warren County in the area it calls Mississippi Alluvial Plain and 47.1% in Loess Hills, with one smaller area beside them. USGS gives the first a radon index of 8 and the second 7, both in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Mississippi Alluvial Plain | Alluvial sand, silt, gravel, and clay. | Low | 8 | 52.3% |
| Loess Hills | Loess. | Low | 7 | 47.1% |
| Floodplain | Alluvium, marsh, silt, and clay. | Low | 7 | 0.6% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Warren County beside the ground around it
Across Mississippi 0.1% of the land is rated high; none of Warren County's is. None of the 7 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Warren County, Local resources
Radon testing and mitigation in Warren 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
Warren County, Questions
Questions about radon in Warren County
Are radon levels high in Warren County?
No CDC testing statistics are published here for Warren County, Mississippi yet. Of the 8 nearest counties with a figure, within 203 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 45.5%.
Which counties border Warren County?
Warren County borders 7 counties: Hinds County, MS, Claiborne County, MS, Madison Parish, LA, Issaquena County, MS, Yazoo County, MS, Tensas Parish, LA and East Carroll Parish, LA.
Products
Warren County, Products
Testing a home in Warren County
No CDC figure names Warren County; the nearest county with one, Tangipahoa Parish, LA (122 miles away), reported 0.0% 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 Warren County.
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
View Plus radon and air quality monitor
- C-NRPP 2024/25: Approved
- Battery
- Wi-Fi, Bluetooth
- Screen, app
Method: Alpha spectrometry
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Warren County, Bordering counties
Counties bordering Warren County
Calculated by Radon411counties bordering Warren County: 1 of 7
Warren County, Cities and towns
Cities and towns in Warren County
Warren County has been losing residents: from 44,548 in 2020 to 41,759 on July 1, 2025, a fall of 6.3% by the Census Bureau's estimates. That works out to 71 people per square mile of land. Vicksburg, its one incorporated place, has 19,830 residents, 47.5% of the total.
Vicksburg is the one incorporated place here; CDC publishes no figure by town, so it reads Warren County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Vicksburg | 19,830 | −7.7% | 47.5% |
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).
Warren County, Homes
Homes in Warren County
Of Warren County's 21,542 homes, 63% are detached houses, against 69% across Mississippi; 18% are mobile homes. The homes are older than Mississippi's as a whole: half were built before 1977 (1986 for Mississippi), and 24% date from before 1960. 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 | Warren County | Mississippi |
|---|---|---|
| Housing units | 21,542 | 1,332,811 |
| Detached houses | 63% | 69% |
| In buildings of 5 or more | 12% | 9% |
| Mobile homes | 18% | 15% |
| Built before 1960 | 24% | 15% |
| Built since 2000 | 17% | 28% |
| Middle year built | 1977 | 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.