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 Franklin Parish, Louisiana
EPA puts Franklin Parish in Zone 3, its lowest radon zone, and only 6 radon tests from it are on file with CDC (2017). 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, 115 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
- Franklin Parish
- 0.0%
- Louisiana
- 0.0%
Share of land USGS rates moderate or high potential
Tests reported
6
Too few for a share
- Franklin Parish
- 6
- Needed
- 30
2017
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 Franklin 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
Franklin Parish, At a glance
Franklin 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
Radon tests reported for Franklin Parish, 2017
CDC holds 6 reported tests for Franklin Parish in 2017, with a median of 2.4 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Franklin Parish beside the counties around it is how this page reads it.
What these figures count
Only 6 tests were reported to CDC for Franklin Parish over 2017, and tests are often run on homes being sold or already suspected of a problem: so few describe neither the parish nor this house.
Measured: CDC tracking data. Figure above: 2017. Measured data period: 2006 to 2017 (every CDC figure on file).
Franklin Parish, Compared
Franklin Parish radon figures, compared
Calculated by Radon411CDC's largest figure for Franklin Parish rests on 6 tests in 2017, 0 of them at or above 4 pCi/L, so each test moves its share by 16.7 points and no rank or comparison is drawn from it. Results reached as high as 3.0 pCi/L, with a middle value of 2.4 pCi/L.
The nearest counties with a figure are East Baton Rouge Parish (115 miles away) at 0.0%, Tangipahoa Parish (128 miles away) at 0.0% and Calcasieu Parish (165 miles away) at 0.0%. Pooled across 37 Louisiana counties, 2.8% of reported tests reached that level; across every county in the country with a figure, 36.3%.
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 Franklin 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.
Franklin Parish, Geology
The ground under Franklin Parish
PredictedUSGS's geologic map puts all of Franklin Parish's mapped land in one class: low radon potential. All 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 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Franklin Parish beside the ground around it
Neither Franklin Parish nor Louisiana as a whole has any land USGS rates above low potential. None of the 5 parishes that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Franklin Parish, Local resources
Radon testing and mitigation in Franklin 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
Franklin Parish, Questions
Questions about radon in Franklin Parish
Are radon levels high in Franklin Parish?
In 2017, 0.0% of the radon tests reported to CDC for Franklin Parish, Louisiana were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.4 pCi/L. Of the 4 nearest counties with a figure, within 186 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 1.5%.
Which counties border Franklin Parish?
Franklin Parish borders 5 parishes: Richland Parish, Caldwell Parish, Tensas Parish, Madison Parish and Catahoula Parish.
Products
Franklin Parish, Products
Testing a home in Franklin Parish
No CDC figure names Franklin Parish; the nearest county with one, East Baton Rouge Parish (115 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 Franklin 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
Monitor
EcoQube Wi-Fi continuous radon monitor
- C-NRPP 2024/25: Approved
- Plug-in
- Wi-Fi
- App only
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
Franklin Parish, Bordering parishes
Parishes bordering Franklin Parish
Calculated by Radon411- Radon levels in Richland ParishEPA zone 3
0.0%at or above 4 pCi/L
Median 0.9 pCi/L · 1 test
- Radon levels in Caldwell ParishEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Tensas ParishEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Madison ParishEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Catahoula ParishEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Franklin Parish, Cities and towns
Cities and towns in Franklin Parish
About 19,002 people live in Franklin Parish by the Census Bureau's estimate for July 1, 2025, 712 fewer than in 2020 (−3.6%). That works out to 30 people per square mile of land. Its largest town, Winnsboro, has 4,566 residents, 24.0% of the total. Together its 4 incorporated places hold 31.3% of those residents; the other 68.7% live outside any of them. CDC's 6 reported tests for 2017 work out to 0.3 per 1,000 residents (2025 estimate), close to Louisiana's 0.3.
From Winnsboro to Baskin, CDC publishes no figure by town: each reads Franklin Parish's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Winnsboro | 4,566 | −5.7% | 24.0% |
| Wisner | 742 | −3.5% | 3.9% |
| Gilbert | 436 | −2.5% | 2.3% |
| Baskin | 205 | −1.9% | 1.1% |
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).
Franklin Parish, Homes
Homes in Franklin Parish
Of Franklin Parish's 8,937 homes, 75% are detached houses, against 65% across Louisiana; 20% are mobile homes. Half of its homes were built before 1977, close to Louisiana's 1982: 20% date from before 1960 and 19% from 2000 or later. 74% 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 | Franklin Parish | Louisiana |
|---|---|---|
| Housing units | 8,937 | 2,094,002 |
| Detached houses | 75% | 65% |
| In buildings of 5 or more | 1% | 11% |
| Mobile homes | 20% | 13% |
| Built before 1960 | 20% | 19% |
| Built since 2000 | 19% | 27% |
| Middle year built | 1977 | 1982 |
| Owner-occupied | 74% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.