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Radon Levels in Acadia Parish, Louisiana

EPA puts Acadia Parish in Zone 3, its lowest radon zone, and only 3 radon tests from it are on file with CDC (2018). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Nearest county

    0.0%

    Calcasieu Parish, 57 miles

    Calcasieu Parish
    0.0%
    Louisiana
    2.8%

    Share at 4+ pCi/L, 59 tests, 2006 to 2015

  • Ground above low

    None

    Level with Louisiana

    Acadia Parish
    0.0%
    Louisiana
    0.0%

    Share of land USGS rates moderate or high potential

  • Tests reported

    3

    Too few for a share

    Acadia Parish
    3
    Needed
    30

    2018

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

Read a result for Acadia Parish

Starts at EPA's action level

4.0pCi/L

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

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 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

Acadia Parish, At a glance

Acadia Parish at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Acadia Parish as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

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 Acadia Parish, 2018

Share of reported tests at or above 4 pCi/L, by year, Acadia Parish
Share of reported tests at or above 4 pCi/L, by year, Acadia Parish
YearShare of reported tests at or above 4 pCi/L
20150.0%
20170.0%
20180.0%

2018: 0.0%. Across these years the share ran from 0.0% to 0.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 3 tests were reported to CDC for Acadia Parish over 2018, 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: 2018. Measured data period: 2005 to 2018 (every CDC figure on file).

How to read these figures

Acadia Parish, Compared

Acadia Parish radon figures, compared

Calculated by Radon411

CDC's largest figure for Acadia Parish rests on 3 tests in 2018, 0 of them at or above 4 pCi/L, so each test moves its share by 33.3 points and no rank or comparison is drawn from it. Results reached as high as 3.1 pCi/L, with a middle value of 3.1 pCi/L.

The nearest counties with a figure are Calcasieu Parish (57 miles away) at 0.0%, East Baton Rouge Parish (80 miles away) at 0.0% and Tangipahoa Parish (122 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 Acadia 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.

Louisiana, the United States and the counties around Acadia Parish, 2006 to 2015, laboratory
AreaTestsAt or above 4 pCi/LMedian
Louisiana, pooled37 counties, pooled4342.8%Not pooled
United States, pooled2,669 counties, pooled1,805,52836.3%Not pooled
Jefferson Parishhighest in the state671.5%0.2 pCi/L
Tangipahoa Parishlowest in the state430.0%0.1 pCi/L
St. Landry Parish, LAborders it425.0%0.8 pCi/L
Lafayette Parish, LAborders it214.8%0.7 pCi/L
Evangeline Parish, LAborders it20.0%0.7 pCi/L
The nearest Louisiana counties to Acadia Parish with 30 or more tests, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Calcasieu Parish57 mi590.0%0.2 pCi/L
East Baton Rouge Parish80 mi480.0%0.6 pCi/L
Tangipahoa Parish122 mi430.0%0.1 pCi/L
Jefferson Parish141 mi671.5%0.2 pCi/L
Acadia Parish radon tests by year, against Louisiana's pooled share
YearTestsAt or above 4 pCi/LMedianHighestLouisiana, pooledChange from the row before
201830.0%3.1 pCi/L3.1 pCi/L0.5%Level
201730.0%1.0 pCi/L1.0 pCi/L2.6%Level
201530.0%0.6 pCi/L0.6 pCi/L7.2%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Acadia Parish, Geology

The ground under Acadia Parish

Predicted

USGS's geologic map puts all of Acadia Parish's mapped land in one class: low radon potential. 96.6% of it lies in the area the map calls Terraces and Prairies, to which USGS gives a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under Acadia Parish
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Terraces and PrairiesClay, sandy clay, silt, sand, and some gravel.Low896.6%
DeltaAlluvium and marsh.Low63.4%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Acadia Parish beside the ground around it

Neither Acadia 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.

Share of land by USGS radon potential: Acadia Parish, the 5 parishes bordering it and Louisiana
AreaEPA zoneLow potentialModerate potentialHigh potential
Acadia ParishZone 3100%NoneNone
Lafayette ParishZone 3100%NoneNone
Vermilion ParishZone 399.8%NoneNone
Jefferson Davis ParishZone 3100%NoneNone
Evangeline ParishZone 3100%NoneNone
St. Landry ParishZone 3100%NoneNone
Louisiana64 parishes, pooled by land areaVaries98.4%NoneNone

The map rates the ground, not the air in any home.

What it means

Acadia Parish, Questions

Questions about radon in Acadia Parish

Are radon levels high in Acadia Parish?

In 2018, 0.0% of the radon tests reported to CDC for Acadia Parish, Louisiana were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.1 pCi/L. Of the 4 nearest counties with a figure, within 141 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 1.5%.

Which counties border Acadia Parish?

Acadia Parish borders 5 parishes: Lafayette Parish, Vermilion Parish, Jefferson Davis Parish, Evangeline Parish and St. Landry Parish.

Products

Acadia Parish, Products

Testing a home in Acadia Parish

No CDC figure names Acadia Parish; the nearest county with one, Calcasieu Parish (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 Acadia Parish.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Acadia Parish homes, compared

Explore

Acadia Parish, Bordering parishes

Parishes bordering Acadia Parish

Calculated by Radon411

Acadia Parish, Cities and towns

Cities and towns in Acadia Parish

About 57,032 people live in Acadia Parish by the Census Bureau's estimate for July 1, 2025, 452 fewer than in 2020 (−0.8%). That works out to 87 people per square mile of land. No town dominates: Crowley, the largest, has 11,223 residents, 19.7% of the total. Reported testing is thin here: 3 tests over 2018, or 0.1 for every 1,000 residents (2025 estimate), where Louisiana as a whole comes to 0.5.

From Crowley to Mermentau, CDC publishes no figure by town: each reads Acadia Parish's.

The cities and towns in Acadia Parish by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Crowley11,223−3.7%19.7%
Euniceextends beyond Acadia Parish9,035−3.7%Counted whole
Rayne6,995−3.4%12.3%
Church Point4,036−3.3%7.1%
Dusonextends beyond Acadia Parish1,357+0.9%Counted whole
Iota1,253−3.5%2.2%
Basileextends beyond Acadia Parish1,192−1.1%Counted whole
Estherwood675−3.3%1.2%
Morse618+4.2%1.1%
Mermentau490−4.7%0.9%

10 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 Acadia Parish is counted whole, so it has no share.

Acadia Parish, Homes

Homes in Acadia Parish

Of Acadia Parish's 25,036 homes, 74% are detached houses, against 65% across Louisiana; 17% are mobile homes. Half of its homes were built before 1979, close to Louisiana's 1982: 23% date from before 1960 and 25% from 2000 or later. 68% 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 in Acadia Parish, Louisiana, 2019 to 2023
HomesAcadia ParishLouisiana
Housing units25,0362,094,002
Detached houses74%65%
In buildings of 5 or more4%11%
Mobile homes17%13%
Built before 196023%19%
Built since 200025%27%
Middle year built19791982
Owner-occupied68%67%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.