Is radon high in New Orleans, Louisiana?

Low. Averaging the model's ZIP-code predictions across New Orleans (weighted by how much of the city each ZIP covers) gives a long-term basement mean of 1.3 pCi/L - about 28% below the US average of 1.8 and close to the Louisiana average of 1.4. That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. New Orleans ranks 5 of 9 Louisiana cities on this site.

Which New Orleans ZIP codes have the highest radon?

Predictions for the 17 modeled ZIP codes in New Orleans range from 1.1 to 1.4 pCi/L in the basement. 0% of them are predicted at or above 4 pCi/L and 0% at or above 2. The city is fairly uniform, so the city-wide number is a reasonable guide for any neighborhood.

Should I test for radon in New Orleans?

Yes, once. The EPA recommends testing every home regardless of area. A short-term kit costs little and settles the question for your house; New Orleans's low predicted average describes the typical home, not yours.

What does EPA Radon Zone 3 mean for New Orleans?

New Orleans sits mainly in Orleans Parish, which the EPA classifies as Zone 3 - low potential (< 2 pCi/L). The zone map dates from 1993 and covers whole counties. The 2001-2021 model agrees with the zone for the city. Neither replaces a test of your own home.

Radon levels in New Orleans, Louisiana

LowEPA Zone 3

Predicted long-term basement average of 1.3 pCi/L (model estimate) across the 17 modeled ZIP codes in New Orleans - about 28% below the US average of 1.8, close to the Louisiana average of 1.4. Ranked #5 of 9 Louisiana cities on this site. Most of the city lies in Orleans Parish.

Test New Orleans, LA once anyway - radon varies house to house

The predicted basement average here is 1.3 pCi/L, below the EPA's 2 pCi/L "consider fixing" threshold. That's good news for the area - but the EPA still recommends every home be tested, because foundation cracks, soil pockets and ventilation make one house very different from its neighbor. One inexpensive kit settles it.

Get a short-term test kit →Or track it with a continuous monitor

We may earn a commission from Amazon at no extra cost to you.

Predicted (model estimate). The pCi/L figures on this page are long-term area averages from a peer-reviewed national model built on millions of real radon tests (2001-2021). They describe the typical home in this area - not your home, which can be several times higher or lower. The EPA radon zone is a separate, 1993 county-level classification. How the numbers work.

1.3 ± 0.07

pCi/L predicted basement mean (model SD)

0.6 ± 0.09

pCi/L predicted upstairs (above-ground) mean

1.1-1.4

range of ZIP-level basement predictions in the city

of New Orleans ZIPs predicted ≥ 4 pCi/L (0% ≥ 2)

What this means for New Orleans

The typical New Orleans home is predicted below 2 pCi/L, the lowest band. That describes the average house; the ZIP-level predictions inside the city still span 1.1 to 1.4 pCi/L.

The city figure is not a separate estimate: it is the mean of the model's ZIP-code predictions, weighted by the share of the city's land in each ZIP (Census 2020 ZCTA-to-place relationship file). The 1993 EPA zone (3) for Orleans Parish and the 2001-2021 model agree here.

Comparable Louisiana cities: Lake Charles (1.3), Baton Rouge (1.3), Shreveport (1.4), Lafayette (1.4).

ZIP codes in New Orleans

ZIPs that overlap the city, largest share of its land first. Predicted basement and upstairs means are model estimates; ZIPs the model does not cover show a dash.

ZIP	Share of city	Basement	Upstairs	Grade
70129	54%	1.4 ± 0.07	0.7	Low
70126	7%	1.2 ± 0.07	0.6	Low
70131	7%	1.3 ± 0.06	0.6	Low
70124	4%	1.2 ± 0.07	0.6	Low
70122	4%	1.2 ± 0.06	0.7	Low
70117	3%	1.1 ± 0.06	0.6	Low
70127	3%	1.2 ± 0.07	0.6	Low
70114	3%	1.2 ± 0.07	0.6	Low
70128	3%	1.3 ± 0.07	0.6	Low
70118	3%	1.2 ± 0.07	0.6	Low
70119	3%	1.1 ± 0.06	0.6	Low
70115	2%	1.2 ± 0.06	0.6	Low
70125	1%	1.1 ± 0.07	0.6	Low
70130	1%	1.1 ± 0.06	0.5	Low
70116	1%	1.1 ± 0.07	0.6	Low
70112	1%	1.1 ± 0.07	0.5	Low
70113	1%	1.1 ± 0.07	0.5	Low
70148	<1%	—	—	no model
70139	<1%	—	—	no model
70163	<1%	—	—	no model

Testing help in Louisiana

We link only state program pages we could verify, and Louisiana's did not respond when we checked, so start from the EPA state radon contacts page. If a test comes back at 4 pCi/L or higher, mitigation typically costs $800-$2,500 installed; use EPA find-a-professional and read the mitigation guide.

New Orleans radon questions

Is radon high in New Orleans, Louisiana?: Low. Averaging the model's ZIP-code predictions across New Orleans (weighted by how much of the city each ZIP covers) gives a long-term basement mean of 1.3 pCi/L - about 28% below the US average of 1.8 and close to the Louisiana average of 1.4. That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. New Orleans ranks 5 of 9 Louisiana cities on this site.
Which New Orleans ZIP codes have the highest radon?: Predictions for the 17 modeled ZIP codes in New Orleans range from 1.1 to 1.4 pCi/L in the basement. 0% of them are predicted at or above 4 pCi/L and 0% at or above 2. The city is fairly uniform, so the city-wide number is a reasonable guide for any neighborhood.
Should I test for radon in New Orleans?: Yes, once. The EPA recommends testing every home regardless of area. A short-term kit costs little and settles the question for your house; New Orleans's low predicted average describes the typical home, not yours.
What does EPA Radon Zone 3 mean for New Orleans?: New Orleans sits mainly in Orleans Parish, which the EPA classifies as Zone 3 - low potential (< 2 pCi/L). The zone map dates from 1993 and covers whole counties. The 2001-2021 model agrees with the zone for the city. Neither replaces a test of your own home.

← All Louisiana counties and cities · Orleans Parish · How to test · Methodology