
Short-term kit![]()
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
EPA puts Yalobusha 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
7.0%
Shelby County, 80 miles
Share at 4+ pCi/L, 341 tests, 2006 to 2015
Ground above low
None
8.1 pts below MS
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 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Yalobusha County
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
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
Yalobusha County, At a glance
Predicted: EPA radon zone
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
CDC has published no radon test figures for Yalobusha County. Shelby County, TN, 80 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.
Yalobusha County, Compared
No Mississippi county, Yalobusha 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 Shelby County, TN (80 miles away) at 7.0%, Fayette County, TN (82 miles away) at 13.1% and Tipton County, TN (101 miles away) at 5.6%.
EPA's 1993 map puts Yalobusha 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.
Yalobusha County, Geology
USGS's geologic map puts all of Yalobusha County's mapped land in one class: low radon potential. The map puts 87.6% of Yalobusha County in the area it calls North Central Hills/Flatwoods and 12.4% in Loess Hills. 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 |
|---|---|---|---|---|
| North Central Hills/Flatwoods | Tertiary nonmarine to deltaic sediments ranging from sand to clay. | Low | 8 | 87.6% |
| Loess Hills | Loess. | Low | 7 | 12.4% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Across Mississippi 0.1% of the land is rated high; none of Yalobusha 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
Yalobusha County, Local resources
What it means
Yalobusha County, Questions
No CDC testing statistics are published here for Yalobusha County, Mississippi yet. Of the 8 nearest counties with a figure, within 120 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 36.6%.
Yalobusha County borders 5 counties: Grenada County, Lafayette County, Calhoun County, Tallahatchie County and Panola County.
Products
Yalobusha County, Products
No CDC figure names Yalobusha County; the nearest county with one, Shelby County, TN (80 miles away), reported 7.0% 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 Yalobusha County.
Test kits and monitors: 1 of 3
Explore
Yalobusha County, Bordering counties
counties bordering Yalobusha County: 1 of 5
Yalobusha County, Cities and towns
About 12,375 people live in Yalobusha County by the Census Bureau's estimate for July 1, 2025, 69 fewer than in 2020 (−0.6%). That works out to 26 people per square mile of land. Its largest town, Water Valley, has 3,414 residents, 27.6% of the total. Together its 3 incorporated places hold 37.6% of those residents; the other 62.4% live outside any of them.
From Water Valley to Oakland, CDC publishes no figure by town: each reads Yalobusha County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Water Valley | 3,414 | +1.3% | 27.6% |
| Coffeeville | 778 | −2.4% | 6.3% |
| Oakland | 458 | −1.3% | 3.7% |
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).
Yalobusha County, Homes
Of Yalobusha County's 6,476 homes, 68% are detached houses, against 69% across Mississippi; 26% are mobile homes. Half of its homes were built before 1981, close to Mississippi's 1986: 18% date from before 1960 and 17% from 2000 or later. 70% 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 | Yalobusha County | Mississippi |
|---|---|---|
| Housing units | 6,476 | 1,332,811 |
| Detached houses | 68% | 69% |
| In buildings of 5 or more | 2% | 9% |
| Mobile homes | 26% | 15% |
| Built before 1960 | 18% | 15% |
| Built since 2000 | 17% | 28% |
| Middle year built | 1981 | 1986 |
| Owner-occupied | 70% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.