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New York Radon Map and Levels by County

New York's counties span all three EPA radon zones. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

Predicted
34 of 62counties in Zone 1, EPA's highest radon zone
Measured
By countyCDC publishes New York's test figures by county: 62 of 62 counties have one.
Your home
Test to knowNo area figure here is a reading of your home.
How to test this homeFind a certified tester

The data

New York, At a glance

New York at a glance

Predicted: EPA radon zone

62 of 62 counties classified

EPA classifies counties, not states. Of the 62 counties in New York with a zone, 34 are in Zone 1, 13 in Zone 2 and 15 in Zone 3.

  • Zone 1: Highest predicted potentialgreater than 4 pCi/L34 of 62 counties · 54.8%
  • Zone 2: Moderate predicted potential2 to 4 pCi/L13 of 62 counties · 21.0%
  • Zone 3: Lower predicted potentialless than 2 pCi/L15 of 62 counties · 24.2%

An EPA radon zone describes predicted potential across a whole county. It is not intended to determine whether any individual home should be tested, and homes with elevated levels occur in all three zones. EPA recommends testing every home regardless of zone, and testing is the only way to know the radon level in a specific building.

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

CDC test figures, county by county

CDC publishes New York's radon test figures by county: 62 of its 62 counties have one. Each one's share is in the county list.

New York, State data

New York's own radon test data

Measured

What New York's own agencies publish about radon tests, with their publisher and period. These are not CDC's figures and are never added to them.

MeasuredState figures, not CDC's

What the New York State Department of Health reports for New York

Indoor air radon testing data (Environmental Public Health Tracker): short-term charcoal canister tests requested through the NYSDOH Radon Program, presented as five-year rolling averages. Period: 2015-2019. The publisher also lists 15 earlier periods.

Share at or above 4 pCi/L

30.5%

Average result

5.1 pCi/L

Tests behind these figures

2,585.8 tests a year on average

  • Every figure is a five-year rolling average: the average result is the rolling average of each year's mean, and the test count is an average per year.
  • The data only include tests requested through the NYSDOH Radon Program, and therefore may not capture all radon tests performed in a county.
  • The data include both screening tests and post-mitigation tests, as it is not always possible to tell them apart.
  • Radon testing by homeowners is optional in New York, so the values may not be representative of every home in the county.
  • These figures describe tests reported to the New York State Department of Health in this area. They count a different set of tests than CDC's figures and are not a reading of any one home.

Measured: New York State Department of Health data, 2015-2019.

New York, Counties

New York counties by EPA zone

Predicted

New York's radon map, then all 62 counties by the zone EPA predicts for each, highest reported share of tests at or above 4 pCi/L first. Each has its own report.

New York radon map by county: EPA radon zones. Map of New York's 62 counties shaded by EPA radon zone: Zone 1 in red-orange, Zone 2 in amber, Zone 3 in pale sand. 34 in Zone 1, 13 in Zone 2, 15 in Zone 3.
New York radon map by countyEPA radon zones for New York's counties: 34 counties in Zone 1, 13 counties in Zone 2, 15 counties in Zone 3.Predicted potential for each county, not a reading of any home. Homes with elevated levels of radon have been found in all three zones.

Zone 1: highest predicted potential34

Local help

New York, Local resources

Local resources in New York

Who to ask in New York: its radon program, test kits and professionals.

What New York's program says
Phone
518-402-7556
Email
radon@health.ny.gov
Licensing of radon professionals
NYS does not certify or license radon testers.

Radon Action Brief

National Radon Action MonthPre-sale

The radon brief for your New York county, in one dated file.

  • Your area's radon record, explained.
  • Your plan to test this week.
  • Fix costs and pros near you.

Save 64%Sale price: $8.99Price after the sale: $25Ends Jan 31Then $25

Get your New York county's BriefSee a free sample

Area data, not a test of the building.

What it means

New York, Questions

Questions about radon in New York

Common questions

9 questions, answered from the figures above

Is radon a problem in New York?

EPA's Map of Radon Zones places 34 of the 62 New York counties it classifies in Zone 1, the highest predicted potential, 13 in Zone 2 and 15 in Zone 3. An EPA radon zone describes predicted potential across a whole county. It is not intended to determine whether any individual home should be tested, and homes with elevated levels occur in all three zones. EPA recommends testing every home regardless of zone, and testing is the only way to know the radon level in a specific building.

New York on the radon mapRadon levels by state

Who does radon mitigation in New York?

Radon411's New York directory lists 88 radon businesses for testing, mitigation or both, each with the licensing list it was read from. EPA recommends having a qualified contractor fix a home with a radon problem, because lowering high radon levels takes technical knowledge and special skills, and some states require the work to be done by a licensed or certified professional.

How radon mitigation worksWhat mitigation costsRadon professionals in New York

How do I get a radon test in New York?

EPA says you can test your home yourself or hire a qualified radon test company, and that either approach takes only a small amount of time and effort. The New York radon program is the place to ask about certified testers and any test kit offer it runs.

How to test a homeFree and low-cost kits by stateNew York radon program

Which New York counties are in EPA radon Zone 1?

34 counties are in Zone 1: Albany County, Allegany County, Broome County, Cattaraugus County, Cayuga County, Chautauqua County, Chemung County, Chenango County, and 26 more in the county table on this page. Zone 1 is EPA's class for highest predicted potential, a predicted average indoor screening level greater than 4 pCi/L. A zone is a prediction for a county, not a measurement of any home.

Radon in Albany CountyRadon in Allegany CountyRadon in Broome County

Which New York counties have the highest radon?

62 of New York's 62 counties have an EPA radon zone published here. Radon411 will not rank counties on data it does not hold, and a zone is a prediction for an area rather than a measurement of any building.

What share of radon tests in New York are high?

CDC has published no statewide radon testing statistics for New York, so we cannot give a figure. Where CDC does publish one, the percentage describes radon tests reported to CDC, not homes.

Which EPA region is New York in?

New York is in EPA Region 2: New Jersey, New York, Puerto Rico, U.S. Virgin Islands.

Do I need to test my home in New York?

Yes, wherever you live in the state. Testing is the only way to know the radon level in a specific building. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. EPA recommends considering a fix when the level is between 2 and 4 pCi/L.

Why does this page show coverage rather than one radon level for New York?

A statewide figure averages counties with very different geology and very different numbers of reported tests, so it hides more than it shows. The county report is the level at which the EPA zone, the geologic potential and the reported testing statistics are actually published, which is why the county table above links to every one of them.

If you own, buy, sell or rent

What these figures mean for each reader, with the guide that covers it

The zone counts on this page describe counties across New York. They are predictions for areas, and none of them measures your building.

New York in figures

The figures above, said in words

What the published data says about New York, in words. A zone and a share of tests describe an area, never the level in any one home.

    • Predicted

      Predicted

      EPA places 34 of New York's 62 counties in Zone 1, 13 in Zone 2 and 15 in Zone 3.

      Zone 1 counties, A to Z, begin with Albany County, Allegany County and Broome County; the county section below lists all 34.

    • Compared

      Calculated by Radon411

      55% of New York's counties with a zone on file are in Zone 1, a larger share than across all U.S. counties (34%). It is a share of counties, not of land, people or homes.

  • Reported tests

    Measured

    CDC has no statewide testing figure for New York on file here.

    62 of the 62 counties have a published county figure; the most tests in each one's latest year were reported for Onondaga County (224 tests in 2023), Genesee County (150 tests in 2023) and Cortland County (122 tests in 2023).

  • Local record

    New York's radon program is the Radon Program, run by New York State Department of Health; its contacts are under Local resources.

    6 cities have a page setting the figures of the counties it lies in side by side: Syracuse, Binghamton, Rochester, Ithaca, Buffalo and Lewiston.

Products

New York, Products

Testing and mitigation products

Whatever the figures for New York show, only a test tells you about one home.

Test kits and monitors42

See all products

As an Amazon Associate, Radon411 earns from qualifying purchases.

Best radon monitors for New York homes, compared

Testing

5

Mitigation

3

Explore

Cities in New York with their own page

Radon data is published by county, not by city. Each city page sets the figures of the counties the city lies in side by side.

New York, Next steps

What to do next

  1. LearnKnow what radon isWhat radon is, how it gets indoors, and why a county zone is not a reading for your home.Learn about radon
  2. TestTest the building you live inShort-term or long-term, where the device goes, and closed-house conditions.How to test
  3. FixBring a high level downHow a mitigation system works, and the retest that confirms it.How mitigation works
  4. Find a proHire a certified professionalMeasurement and mitigation professionals by state, with their certifications.Find a professional

Informational. Follow EPA guidance. EPA says all radon tests should be taken for a minimum of 48 hours, with windows and doors closed from 12 hours before a short-term test.