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 Madison Parish, Louisiana
EPA puts Madison Parish 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%
East Baton Rouge Parish, 126 miles
- East Baton Rouge Parish
- 0.0%
- Louisiana
- 2.8%
Share at 4+ pCi/L, 48 tests, 2006 to 2015
Ground above low
None
Level with Louisiana
- Madison Parish
- 0.0%
- Louisiana
- 0.0%
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 Madison Parish
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
Madison Parish, At a glance
Madison Parish 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 Madison Parish. East Baton Rouge Parish, 126 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.
Madison Parish, Compared
Madison Parish radon figures, compared
Calculated by Radon411No CDC figure names Madison Parish, in any year or ten-year total; over the 2006 to 2015 laboratory totals, the agency's counts reach 37 Louisiana counties without it. Pooled across 37 Louisiana counties, 2.8% of reported tests reached that level; across every county in the country with a figure, 36.3%.
The nearest counties with a figure are East Baton Rouge Parish (126 miles away) at 0.0%, Tangipahoa Parish (130 miles away) at 0.0% and Jefferson Parish (189 miles away) at 1.5%. Statewide for the same period, Jefferson Parish reported the highest share (1.5%) and Tangipahoa Parish the lowest (0.0%).
EPA's 1993 map puts Madison Parish 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.
Madison Parish, Geology
The ground under Madison Parish
PredictedUSGS's geologic map puts all of Madison Parish's mapped land in one class: low radon potential. 99.2% of it lies in the area the map calls Floodplain, to which USGS gives a radon index of 7, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Floodplain | Alluvium, marsh, silt, and clay. | Low | 7 | 99.2% |
| Mississippi Alluvial Plain | Alluvial sand, silt, gravel, and clay. | Low | 8 | 0.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Madison Parish beside the ground around it
Neither Madison Parish nor Louisiana as a whole has any land USGS rates above low potential. 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
Madison Parish, Local resources
Radon testing and mitigation in Madison Parish
- Louisiana's radon programLouisiana Department of Environmental QualityLouisiana's radon program answers questions about testing, mitigation and the rules in Louisiana.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 Louisiana directoryNo professionals are listed in Louisiana yet. The state program can point you to registered testers and mitigators.
What it means
Madison Parish, Questions
Questions about radon in Madison Parish
Are radon levels high in Madison Parish?
No CDC testing statistics are published here for Madison Parish, Louisiana yet. Of the 4 nearest counties with a figure, within 193 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 1.5%.
Which counties border Madison Parish?
Madison Parish borders 5 counties: Warren County, MS, East Carroll Parish, LA, Tensas Parish, LA, Richland Parish, LA and Franklin Parish, LA.
Products
Madison Parish, Products
Testing a home in Madison Parish
No CDC figure names Madison Parish; the nearest county with one, East Baton Rouge Parish (126 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 Madison Parish.
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
Madison Parish, Bordering counties
Counties bordering Madison Parish
Calculated by Radon411- Radon levels in Franklin Parish, LAEPA zone 3
100.0%at or above 4 pCi/L
Median 5.7 pCi/L · 1 test
- Radon levels in Richland Parish, LAEPA zone 3
0.0%at or above 4 pCi/L
Median 0.9 pCi/L · 1 test
- Radon levels in Warren County, MSEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in East Carroll Parish, LAEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Tensas Parish, LAEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Madison Parish, Cities and towns
Cities and towns in Madison Parish
Madison Parish has been losing residents: from 9,929 in 2020 to 8,844 on July 1, 2025, a fall of 10.9% by the Census Bureau's estimates. That works out to 14 people per square mile of land. Tallulah alone is home to 5,517 of them, 62.4% of the total. Together its 4 incorporated places hold 70.1% of those residents; the other 29.9% live outside any of them. CDC publishes no radon test count for Madison Parish; across Louisiana its counts for 2006 to 2015 come to 0.1 tests for every 1,000 residents (2025 estimate).
From Tallulah to Mound, CDC publishes no figure by town: each reads Madison Parish's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Tallulah | 5,517 | −11.8% | 62.4% |
| Richmond | 466 | −9.3% | 5.3% |
| Delta | 208 | −8.8% | 2.4% |
| Mound | 12 | −14.3% | 0.1% |
4 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).
Madison Parish, Homes
Homes in Madison Parish
Of Madison Parish's 4,388 homes, 70% are detached houses, against 65% across Louisiana; 14% are mobile homes. Half of its homes were built before 1976, close to Louisiana's 1982: 26% date from before 1960 and 19% from 2000 or later. 56% of occupied homes are lived in by their owner (Louisiana: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Madison Parish | Louisiana |
|---|---|---|
| Housing units | 4,388 | 2,094,002 |
| Detached houses | 70% | 65% |
| In buildings of 5 or more | 7% | 11% |
| Mobile homes | 14% | 13% |
| Built before 1960 | 26% | 19% |
| Built since 2000 | 19% | 27% |
| Middle year built | 1976 | 1982 |
| Owner-occupied | 56% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.