Short-term kit
PicoCan short-term charcoal canister radon test
- Lab fee included
Method: Charcoal
In home: 48 to 96 hours
Locations and reports
Radon Levels in Monroe County, Mississippi
EPA puts Monroe 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
18.6%
Franklin County, 53 miles
- Franklin
- 18.6%
Share at 4+ pCi/L, 210 tests, 2006 to 2015
Ground above low
28.0%
19.9 pts above MS
- Monroe
- 28.0%
- 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 Monroe 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
Monroe County, At a glance
Monroe County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 72% 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 Monroe County. Franklin County, AL, 53 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.
Monroe County, Compared
Monroe County radon figures, compared
Calculated by Radon411No Mississippi county, Monroe 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 Franklin County, AL (53 miles away) at 18.6%, Colbert County, AL (68 miles away) at 36.6% and Tuscaloosa County, AL (69 miles away) at 10.1%.
EPA's 1993 map puts Monroe County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 72% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Monroe County, Geology
The ground under Monroe County
PredictedUSGS's geologic map splits Monroe County: 72.0% of its land is low radon potential and 28.0% moderate. The map puts 72.0% of Monroe County in the area it calls Tombigbee Hills and 28.0% in Pontotoc Ridge/Black Prairies. USGS gives the first a radon index of 8, in the low band (5 to 8), and the second 9, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Tombigbee Hills | Clay, sand, sandstone, chalk, chalky marl, quartzose, chert gravels, and quartz sand. | Low | 8 | 72.0% |
| Pontotoc Ridge/Black Prairies | Glauconitic sand, clay, sandy limestone, micaceous chalk, and lime. | Moderate | 9 | 28.0% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Monroe County beside the ground around it
Across Mississippi 0.1% of the land is rated high; none of Monroe County's is. Of the 7 counties that border it, 6 have more moderate-potential ground, Marion County, AL the most at 99.8%.
The map rates the ground, not the air in any home.
Local help
Monroe County, Local resources
Radon testing and mitigation in Monroe 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
Monroe County, Questions
Questions about radon in Monroe County
Are radon levels high in Monroe County?
No CDC testing statistics are published here for Monroe County, Mississippi yet. Of the 8 nearest counties with a figure, within 94 miles, the share of tests at or above 4 pCi/L runs from 6.3% to 36.6%.
Which counties border Monroe County?
Monroe County borders 7 counties: Itawamba County, MS, Lamar County, AL, Lee County, MS, Clay County, MS, Chickasaw County, MS, Lowndes County, MS and Marion County, AL.
Products
Monroe County, Products
Testing a home in Monroe County
No CDC figure names Monroe County; the nearest county with one, Franklin County, AL (53 miles away), reported 18.6% 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 Monroe 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
MonitorAranet
Radon Plus battery digital radon monitor with an e-ink screen
- C-NRPP 2024/25: Approved
- Battery
- 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
Monroe County, Bordering counties
Counties bordering Monroe County
Calculated by Radon411- Radon levels in Lamar County, ALEPA zone 2
75.0%at or above 4 pCi/L
Median 7.5 pCi/L · 4 tests
- Radon levels in Marion County, ALEPA zone 2
7.1%at or above 4 pCi/L
Median 1.2 pCi/L · 28 tests
- Radon levels in Itawamba County, MSEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Lee County, MSEPA zone 2
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Clay County, MSEPA zone 2
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Chickasaw County, MSEPA zone 2
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Lowndes County, MSEPA zone 2
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Monroe County, Cities and towns
Cities and towns in Monroe County
About 33,318 people live in Monroe County by the Census Bureau's estimate for July 1, 2025, 818 fewer than in 2020 (−2.4%). That works out to 44 people per square mile of land. No town dominates: Amory, the largest, has 6,386 residents, 19.2% of the total.
From Amory to Gattman, CDC publishes no figure by town: each reads Monroe County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Amory | 6,386 | −4.1% | 19.2% |
| Aberdeen | 4,799 | −3.3% | 14.4% |
| Nettletonextends beyond Monroe County | 1,934 | −2.2% | Counted whole |
| Smithville | 502 | −1.6% | 1.5% |
| Hatley | 483 | −2.2% | 1.4% |
| Gattman | 85 | +7.6% | 0.3% |
6 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 Monroe County is counted whole, so it has no share.
Monroe County, Homes
Homes in Monroe County
Of Monroe County's 16,790 homes, 71% are detached houses, against 69% across Mississippi; 19% are mobile homes. Half of its homes were built before 1979, close to Mississippi's 1986: 20% date from before 1960 and 21% from 2000 or later. Owners live in 77% of the occupied homes (Mississippi: 69%), so for most households a test and a fix are their own to order.
| Homes | Monroe County | Mississippi |
|---|---|---|
| Housing units | 16,790 | 1,332,811 |
| Detached houses | 71% | 69% |
| In buildings of 5 or more | 2% | 9% |
| Mobile homes | 19% | 15% |
| Built before 1960 | 20% | 15% |
| Built since 2000 | 21% | 28% |
| Middle year built | 1979 | 1986 |
| Owner-occupied | 77% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.