Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
Locations and reports
Radon Levels in Hancock County, Mississippi
EPA puts Hancock 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, 57 miles
- Tangipahoa Parish
- 0.0%
Share at 4+ pCi/L, 43 tests, 2006 to 2015
Ground above low
None
8.1 pts below MS
- Hancock
- 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 Hancock 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
Hancock County, At a glance
Hancock 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 Hancock County. Tangipahoa Parish, LA, 57 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.
Hancock County, Compared
Hancock County radon figures, compared
Calculated by Radon411Hancock County is in a state CDC's county radon counts do not reach: no Mississippi county has a figure, while 2,669 counties elsewhere do over the 2006 to 2015 laboratory totals. 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 (57 miles away) at 0.0%, Jefferson Parish, LA (58 miles away) at 1.5% and Mobile County, AL (81 miles away) at 4.4%.
EPA's 1993 map puts Hancock 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.
Hancock County, Geology
The ground under Hancock County
PredictedUSGS's geologic map puts all of Hancock County's mapped land in one class: low radon potential. The map puts 57.8% of Hancock County in the area it calls Coastal Pine Meadows and 41.5% in Pine Hills. USGS gives both a radon index of 6, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Coastal Pine Meadows | Alluvial deltas consisting of gravel, sand and clay. | Low | 6 | 57.8% |
| Pine Hills | Sand, sandstone, bentonitic clay, quartzite, gravel, tuff, and siltstone. | Low | 6 | 41.5% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Hancock County beside the ground around it
Across Mississippi 0.1% of the land is rated high; none of Hancock County's is. None of the 4 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Hancock County, Local resources
Radon testing and mitigation in Hancock 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
Hancock County, Questions
Questions about radon in Hancock County
Are radon levels high in Hancock County?
No CDC testing statistics are published here for Hancock County, Mississippi yet. Of the 8 nearest counties with a figure, within 229 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 12.8%.
Which counties border Hancock County?
Hancock County borders 4 counties: Pearl River County, MS, Harrison County, MS, St. Tammany Parish, LA and Stone County, MS.
Products
Hancock County, Products
Testing a home in Hancock County
No CDC figure names Hancock County; the nearest county with one, Tangipahoa Parish, LA (57 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 Hancock 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
Corentium Home battery digital radon detector
- C-NRPP 2024/25: Approved
- Battery
- Screen
Method: Alpha spectrometry
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Hancock County, Bordering counties
Counties bordering Hancock County
Calculated by Radon411- Radon levels in St. Tammany Parish, LAEPA zone 3
10.5%at or above 4 pCi/L
Median 0.2 pCi/L · 19 tests
- Radon levels in Pearl River County, MSEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Harrison County, MSEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Stone County, MSEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Hancock County, Cities and towns
Cities and towns in Hancock County
The Census Bureau estimates 46,873 residents in Hancock County for July 1, 2025, 752 more than in 2020 (+1.6%). That works out to 99 people per square mile of land. Its largest town, Bay St. Louis, has 10,634 residents, 22.7% of the total. Together its 3 incorporated places hold 57.9% of those residents; the other 42.1% live outside any of them.
From Bay St. Louis to Waveland, CDC publishes no figure by town: each reads Hancock County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Bay St. Louis | 10,634 | +12.7% | 22.7% |
| Diamondhead | 9,441 | −0.7% | 20.1% |
| Waveland | 7,042 | −2.1% | 15.0% |
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).
Hancock County, Homes
Homes in Hancock County
Hancock County is a place of houses on their own lots: 78% of its 23,277 homes are detached single-family houses, against 69% across Mississippi. Much of Hancock County is recent building: 45% of its homes have gone up since 2000 and the middle year built is 1997, against 1986 for Mississippi. Owners live in 79% of the occupied homes (Mississippi: 69%), so for most households a test and a fix are their own to order.
| Homes | Hancock County | Mississippi |
|---|---|---|
| Housing units | 23,277 | 1,332,811 |
| Detached houses | 78% | 69% |
| In buildings of 5 or more | 6% | 9% |
| Mobile homes | 11% | 15% |
| Built before 1960 | 7% | 15% |
| Built since 2000 | 45% | 28% |
| Middle year built | 1997 | 1986 |
| Owner-occupied | 79% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.