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 Sunflower County, Mississippi
EPA puts Sunflower 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, 116 miles
- Shelby
- 7.0%
Share at 4+ pCi/L, 341 tests, 2006 to 2015
Ground above low
None
8.1 pts below MS
- Sunflower
- 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 Sunflower 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
Sunflower County, At a glance
Sunflower 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 Sunflower County. Shelby County, TN, 116 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.
Sunflower County, Compared
Sunflower County radon figures, compared
Calculated by Radon411No Mississippi county, Sunflower 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 (116 miles away) at 7.0%, Pulaski County, AR (127 miles away) at 6.2% and Fayette County, TN (129 miles away) at 13.1%.
EPA's 1993 map puts Sunflower 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.
Sunflower County, Geology
The ground under Sunflower County
PredictedUSGS's geologic map puts all of Sunflower County's mapped land in one class: low radon potential. All of it lies in the area the map calls Mississippi Alluvial Plain, to which USGS gives 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 |
|---|---|---|---|---|
| Mississippi Alluvial Plain | Alluvial sand, silt, gravel, and clay. | Low | 8 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Sunflower County beside the ground around it
Across Mississippi 0.1% of the land is rated high; none of Sunflower County's is. None of the 6 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Sunflower County, Local resources
Radon testing and mitigation in Sunflower 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
Sunflower County, Questions
Questions about radon in Sunflower County
Are radon levels high in Sunflower County?
No CDC testing statistics are published here for Sunflower County, Mississippi yet. Of the 8 nearest counties with a figure, within 168 miles, the share of tests at or above 4 pCi/L runs from 5.6% to 45.5%.
Which counties border Sunflower County?
Sunflower County borders 6 counties: Leflore County, Bolivar County, Tallahatchie County, Washington County, Coahoma County and Humphreys County.
Products
Sunflower County, Products
Testing a home in Sunflower County
No CDC figure names Sunflower County; the nearest county with one, Shelby County, TN (116 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 Sunflower 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
Sunflower County, Bordering counties
Counties bordering Sunflower County
Calculated by Radon411counties bordering Sunflower County: 1 of 6
Sunflower County, Cities and towns
Cities and towns in Sunflower County
Sunflower County has been losing residents: from 25,695 in 2020 to 22,893 on July 1, 2025, a fall of 10.9% by the Census Bureau's estimates. That works out to 33 people per square mile of land. Its largest town, Indianola, has 8,637 residents, 37.7% of the total.
From Indianola to Doddsville, CDC publishes no figure by town: each reads Sunflower County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Indianola | 8,637 | −8.4% | 37.7% |
| Ruleville | 2,278 | −13.6% | 10.0% |
| Moorhead | 1,754 | −9.2% | 7.7% |
| Drew | 1,658 | −9.6% | 7.2% |
| Shawextends beyond Sunflower County | 1,337 | −8.0% | Counted whole |
| Sunflower | 874 | −9.1% | 3.8% |
| Inverness | 805 | −6.5% | 3.5% |
| Doddsville | 85 | −6.6% | 0.4% |
8 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 Sunflower County is counted whole, so it has no share.
Sunflower County, Homes
Homes in Sunflower County
Of Sunflower County's 9,415 homes, 74% are detached houses, against 69% across Mississippi; 12% are in buildings of five or more homes. The homes are older than Mississippi's as a whole: half were built before 1976 (1986 for Mississippi), and 22% date from before 1960. 56% 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 | Sunflower County | Mississippi |
|---|---|---|
| Housing units | 9,415 | 1,332,811 |
| Detached houses | 74% | 69% |
| In buildings of 5 or more | 12% | 9% |
| Mobile homes | 5% | 15% |
| Built before 1960 | 22% | 15% |
| Built since 2000 | 11% | 28% |
| Middle year built | 1976 | 1986 |
| Owner-occupied | 56% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.