Short-term kitempowerDX
Standard Radon Test short-term mail-in radon test kit
- Lab fee included
Method: Passive sampler
In home: 48 to 96 hours
Locations and reports
Radon Levels in Mississippi County, Arkansas
EPA puts Mississippi County in Zone 3, its lowest radon zone, and only 4 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
7.0%
Shelby County
- Shelby
- 7.0%
- Tipton
- 4.5%
2 of 9 neighbours have 30+ tests, 2007 to 2016
Nearest county
6.8%
Pulaski County, 145 miles
- Pulaski
- 6.8%
- Arkansas
- 22.7%
Share at 4+ pCi/L, 103 tests, 2007 to 2016
Ground above low
None
21.3 pts below Arkansas
- Mississippi
- 0.0%
- Arkansas
- 21.3%
Share of land USGS rates moderate or high potential
Tests reported
5
Too few for a share
- Mississippi
- 5
- Needed
- 30
2007 to 2016, laboratory
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 Mississippi 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
Mississippi County, At a glance
Mississippi 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
Radon tests reported for Mississippi County, 2008 to 2017, laboratory
CDC holds 4 reported tests for Mississippi County over the 2008 to 2017 laboratory totals, with a median of 9.8 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Mississippi County beside the counties around it is how this page reads it.
What these figures count
Only 4 tests were reported to CDC for Mississippi County over 2008 to 2017 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Mississippi County, Compared
Mississippi County radon figures, compared
Calculated by Radon411CDC's largest figure for Mississippi County rests on 5 tests over the 2007 to 2016 laboratory totals, 3 of them at or above 4 pCi/L, so each test moves its share by 20.0 points and no rank or comparison is drawn from it. Results reached as high as 11.2 pCi/L, with a middle value of 9.5 pCi/L.
Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Shelby County, TN reported the largest share at or above 4 pCi/L, 7.0%, and Tipton County, TN the smallest, 4.5%. Farther out, Pulaski County (145 miles away) at 6.8%, Saline County (167 miles away) at 31.9% and Garland County (193 miles away) at 45.8% have figures too. Pooled across 60 Arkansas counties, 22.7% of reported tests reached that level; across every county in the country with a figure, 35.8%.
Statewide for the same period, Garland County reported the highest share (45.8%) and Pulaski County the lowest (6.8%). EPA's 1993 map puts Mississippi 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.
Mississippi County, Geology
The ground under Mississippi County
PredictedUSGS's geologic map puts all of Mississippi 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 | 99.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Mississippi County beside the ground around it
Across Arkansas 21.3% of the land is rated moderate; none of Mississippi County's is. Of the 9 counties that border it, 2 have more moderate-potential ground, Craighead County the most at 23.4%.
The map rates the ground, not the air in any home.
Local help
Mississippi County, Local resources
Radon testing and mitigation in Mississippi County
- Arkansas's radon programArkansas Department of HealthArkansas's radon program answers questions about testing, mitigation and the rules in Arkansas.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 Arkansas directoryNo professionals are listed in Arkansas yet. The state program can point you to registered testers and mitigators.
What Arkansas's program says
- Phone
- 501-661-2621
- ADH.EPI.Radon@arkansas.gov
What it means
Mississippi County, Questions
Questions about radon in Mississippi County
Are radon levels high in Mississippi County?
Over the 2008 to 2017 laboratory totals, 75.0% of the radon tests reported to CDC for Mississippi County, Arkansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 9.8 pCi/L. Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Shelby County, TN reported the largest share at or above 4 pCi/L, 7.0%, and Tipton County, TN the smallest, 4.5%.
Which counties border Mississippi County?
Mississippi County borders 9 counties: Tipton County, TN, Lauderdale County, TN, Craighead County, AR, Poinsett County, AR, Shelby County, TN, Pemiscot County, MO, Crittenden County, AR, Dunklin County, MO and Dyer County, TN.
Products
Mississippi County, Products
Testing a home in Mississippi County
No CDC figure names Mississippi County; the nearest county with one, Pulaski County (145 miles away), reported 6.8% of its tests at or above 4 pCi/L over the 2007 to 2016 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 Mississippi 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
MonitorAEGTEST
HOUND-1011 rechargeable radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 6 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Mississippi County, Bordering counties
Counties bordering Mississippi County
Calculated by Radon411- Radon levels in Lauderdale County, TNEPA zone 3
12.5%at or above 4 pCi/L
Median 2.0 pCi/L · 8 tests
- Radon levels in Craighead County, AREPA zone 3
10.0%at or above 4 pCi/L
Median 0.9 pCi/L · 20 tests
- Radon levels in Dunklin County, MOEPA zone 3
7.1%at or above 4 pCi/L
Median 1.3 pCi/L · 14 tests
- Radon levels in Shelby County, TNEPA zone 3
7.0%at or above 4 pCi/L
Median 1.0 pCi/L · 344 tests
- Radon levels in Tipton County, TNEPA zone 3
4.5%at or above 4 pCi/L
Median 1.0 pCi/L · 89 tests
- Radon levels in Pemiscot County, MOEPA zone 3
0.0%at or above 4 pCi/L
Median 0.8 pCi/L · 5 tests
- Radon levels in Crittenden County, AREPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 1 test
- Radon levels in Dyer County, TNEPA zone 3
0.0%at or above 4 pCi/L
Median 1.4 pCi/L · 23 tests
- Radon levels in Poinsett County, AREPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Mississippi County, Cities and towns
Cities and towns in Mississippi County
Mississippi County has been losing residents: from 40,535 in 2020 to 37,828 on July 1, 2025, a fall of 6.7% by the Census Bureau's estimates. That works out to 42 people per square mile of land. Its largest town, Blytheville, has 12,227 residents, 32.3% of the total. Together its 17 incorporated places hold 81.5% of those residents; the other 18.5% live outside any of them. Reported testing is thin here: 5 tests over 2007 to 2016, or 0.1 for every 1,000 residents (2025 estimate), where Arkansas as a whole comes to 0.2.
From Blytheville to Victoria, CDC publishes no figure by town: each reads Mississippi County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Blytheville | 12,227 | −8.4% | 32.3% |
| Osceola | 6,450 | −7.2% | 17.1% |
| Manila | 3,773 | +2.4% | 10.0% |
| Gosnell | 2,663 | −8.1% | 7.0% |
| Leachville | 1,883 | −7.5% | 5.0% |
| Luxora | 855 | −8.5% | 2.3% |
| Wilson | 702 | −8.2% | 1.9% |
| Keiser | 693 | −7.7% | 1.8% |
| Joiner | 465 | −6.6% | 1.2% |
| Dyess | 318 | −5.9% | 0.8% |
| Etowah | 237 | −5.2% | 0.6% |
| Dell | 181 | −6.7% | 0.5% |
- Burdette
- Bassett
- Marie
- Birdsong
- Victoria
17 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).
Mississippi County, Homes
Homes in Mississippi County
Of Mississippi County's 19,126 homes, 69% are detached houses, against 70% across Arkansas; 7% are mobile homes. The homes are older than Arkansas' as a whole: half were built before 1978 (1987 for Arkansas), and 18% date from before 1960. 59% of occupied homes are lived in by their owner (Arkansas: 66%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Mississippi County | Arkansas |
|---|---|---|
| Housing units | 19,126 | 1,382,664 |
| Detached houses | 69% | 70% |
| In buildings of 5 or more | 6% | 10% |
| Mobile homes | 7% | 11% |
| Built before 1960 | 18% | 14% |
| Built since 2000 | 15% | 28% |
| Middle year built | 1978 | 1987 |
| Owner-occupied | 59% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.