Is radon high in Lorain, Ohio?

Low. Averaging the model's ZIP-code predictions across Lorain (weighted by how much of the city each ZIP covers) gives a long-term basement mean of 1.7 pCi/L - close to the US average of 1.8 and about 40% below the Ohio average of 2.8. That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. Lorain ranks 21 of 27 Ohio cities on this site.

Which Lorain ZIP codes have the highest radon?

Predictions for the 4 modeled ZIP codes in Lorain range from 1.5 to 2.5 pCi/L in the basement. 0% of them are predicted at or above 4 pCi/L and 25% at or above 2. That spread is why the ZIP table below matters more than the city-wide number.

Should I test for radon in Lorain?

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

What does EPA Radon Zone 2 mean for Lorain?

Lorain sits mainly in Lorain County, which the EPA classifies as Zone 2 - moderate potential (2-4 pCi/L). The zone map dates from 1993 and covers whole counties. The newer model's city average of 1.7 pCi/L does not line up with Zone 2, which is common - the EPA itself says high-radon homes exist in every zone. Neither replaces a test of your own home.

Radon levels in Lorain, Ohio

LowEPA Zone 2

Predicted long-term basement average of 1.7 pCi/L (model estimate) across the 4 modeled ZIP codes in Lorain - close to the US average of 1.8, about 40% below the Ohio average of 2.8. Ranked #21 of 27 Ohio cities on this site. Most of the city lies in Lorain County.

Test Lorain, OH once anyway - radon varies house to house

The predicted basement average here is 1.7 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.

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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.

1.7 ± 0.08

pCi/L predicted basement mean (model SD)

1.0 ± 0.08

pCi/L predicted upstairs (above-ground) mean

1.5-2.5

range of ZIP-level basement predictions in the city

of Lorain ZIPs predicted ≥ 4 pCi/L (25% ≥ 2)

What this means for Lorain

The typical Lorain home is predicted below 2 pCi/L, the lowest band. That describes the average house; the ZIP-level predictions inside the city still span 1.5 to 2.5 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). Note that the EPA classifies Lorain County as Zone 2 while the newer model predicts 1.7 pCi/L for Lorain; where they disagree, we grade on the model but show both.

Comparable Ohio cities: Parma (1.8), Cincinnati (1.6), Cleveland Heights (1.5), Elyria (2.0).

ZIP codes in Lorain

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
44053	42%	2.0 ± 0.10	1.1	Low
44052	39%	1.5 ± 0.06	0.8	Low
44055	18%	1.5 ± 0.07	0.9	Low
44001	1%	2.5 ± 0.07	1.2	Moderate

Testing help in Ohio

Ohio's radon program page is at odh.ohio.gov; it lists testing and certified-mitigator guidance. 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.

Lorain radon questions

Is radon high in Lorain, Ohio?: Low. Averaging the model's ZIP-code predictions across Lorain (weighted by how much of the city each ZIP covers) gives a long-term basement mean of 1.7 pCi/L - close to the US average of 1.8 and about 40% below the Ohio average of 2.8. That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. Lorain ranks 21 of 27 Ohio cities on this site.
Which Lorain ZIP codes have the highest radon?: Predictions for the 4 modeled ZIP codes in Lorain range from 1.5 to 2.5 pCi/L in the basement. 0% of them are predicted at or above 4 pCi/L and 25% at or above 2. That spread is why the ZIP table below matters more than the city-wide number.
Should I test for radon in Lorain?: Yes, once. The EPA recommends testing every home regardless of area. A short-term kit costs little and settles the question for your house; Lorain's low predicted average describes the typical home, not yours.
What does EPA Radon Zone 2 mean for Lorain?: Lorain sits mainly in Lorain County, which the EPA classifies as Zone 2 - moderate potential (2-4 pCi/L). The zone map dates from 1993 and covers whole counties. The newer model's city average of 1.7 pCi/L does not line up with Zone 2, which is common - the EPA itself says high-radon homes exist in every zone. Neither replaces a test of your own home.

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