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Radon Levels in Allen Parish, Louisiana

EPA puts Allen 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%

    Calcasieu Parish, 43 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

    Allen 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. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

Read a result for Allen 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

Allen Parish, At a glance

Allen Parish at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Allen 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

No CDC test figures here

CDC has published no radon test figures for Allen Parish. Calcasieu Parish, 43 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.

How to read these figures

Allen Parish, Compared

Allen Parish radon figures, compared

Calculated by Radon411

CDC's county radon counts over the 2006 to 2015 laboratory totals cover 37 Louisiana counties, and Allen Parish is not among them: no year's figure and no ten-year laboratory total names 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 Calcasieu Parish (43 miles away) at 0.0%, East Baton Rouge Parish (104 miles away) at 0.0% and Tangipahoa Parish (144 miles away) at 0.0%. 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 Allen 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 Allen 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
Evangeline Parish, LAborders it20.0%0.7 pCi/L
Rapides Parish, LAborders it40.0%0.8 pCi/L
The nearest Louisiana counties to Allen Parish with 30 or more tests, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Calcasieu Parish43 mi590.0%0.2 pCi/L
East Baton Rouge Parish104 mi480.0%0.6 pCi/L
Tangipahoa Parish144 mi430.0%0.1 pCi/L
Jefferson Parish172 mi671.5%0.2 pCi/L

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

Allen Parish, Geology

The ground under Allen Parish

Predicted

USGS's geologic map puts all of Allen Parish's mapped land in one class: low radon potential. All 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 Allen Parish
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Terraces and PrairiesClay, sandy clay, silt, sand, and some gravel.Low8100%

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

Allen Parish beside the ground around it

Neither Allen 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: Allen Parish, the 5 parishes bordering it and Louisiana
AreaEPA zoneLow potentialModerate potentialHigh potential
Allen ParishZone 3100%NoneNone
Evangeline ParishZone 3100%NoneNone
Jefferson Davis ParishZone 3100%NoneNone
Beauregard ParishZone 3100%NoneNone
Rapides ParishZone 3100%NoneNone
Vernon 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

Allen Parish, Questions

Questions about radon in Allen Parish

Are radon levels high in Allen Parish?

No CDC testing statistics are published here for Allen Parish, Louisiana yet. Of the 4 nearest counties with a figure, within 172 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 1.5%.

Which counties border Allen Parish?

Allen Parish borders 5 parishes: Evangeline Parish, Jefferson Davis Parish, Beauregard Parish, Rapides Parish and Vernon Parish.

Products

Allen Parish, Products

Testing a home in Allen Parish

No CDC figure names Allen Parish; the nearest county with one, Calcasieu Parish (43 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 Allen Parish.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Allen Parish homes, compared

Explore

Allen Parish, Bordering parishes

Parishes bordering Allen Parish

Calculated by Radon411

Allen Parish, Cities and towns

Cities and towns in Allen Parish

Allen Parish's population has barely moved since 2020: 22,672 residents on July 1, 2025 against 22,671 then, by the Census Bureau's estimates. That works out to 30 people per square mile of land. Its largest town, Oakdale, has 6,526 residents, 28.8% of the total. Together its 5 incorporated places hold 46.5% of those residents; the other 53.5% live outside any of them. CDC publishes no radon test count for Allen Parish; across Louisiana its counts for 2006 to 2015 come to 0.1 tests for every 1,000 residents (2025 estimate).

From Oakdale to Reeves, CDC publishes no figure by town: each reads Allen Parish's.

The cities and towns in Allen Parish by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Oakdale6,526−2.1%28.8%
Kinder2,091−3.3%9.2%
Oberlin1,286−2.9%5.7%
Elizabeth410−0.5%1.8%
Reeves227+3.7%1.0%

5 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).

Allen Parish, Homes

Homes in Allen Parish

Of Allen Parish's 9,543 homes, 70% are detached houses, against 65% across Louisiana; 19% are mobile homes. Half of its homes were built before 1979, close to Louisiana's 1982: 23% date from before 1960 and 24% from 2000 or later. Owners live in 77% of the occupied homes (Louisiana: 67%), so for most households a test and a fix are their own to order.

Homes in Allen Parish, Louisiana, 2019 to 2023
HomesAllen ParishLouisiana
Housing units9,5432,094,002
Detached houses70%65%
In buildings of 5 or more3%11%
Mobile homes19%13%
Built before 196023%19%
Built since 200024%27%
Middle year built19791982
Owner-occupied77%67%

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