Radon Levels in New York

62 counties — 34 high risk, 13 moderate, 15 low risk

34
13
15
Zone 1 High (54.8%) Zone 2 Moderate (21.0%) Zone 3 Low (24.2%)

New York Radon Zone Map

Counties colored by EPA radon zone. Red = Zone 1, Orange = Zone 2, Green = Zone 3.

Highest-Risk Counties

Albany30.2% above action level
Allegany44.4% above action level
Broome32.6% above action level
Cattaraugus42.9% above action level
Cayuga66.7% above action level
Chautauqua58.3% above action level
Chemung47.1% above action level
Chenango40% above action level
Columbia38.5% above action level
Cortland50% above action level
Delaware40% above action level
Dutchess36.2% above action level
+22 more

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All 62 Counties — By Radon Risk

CountyEPA ZoneTests% Above 4 pCi/L
Albany High 63 30.2%
Allegany High 9 44.4%
Broome High 46 32.6%
Cattaraugus High 14 42.9%
Cayuga High 12 66.7%
Chautauqua High 24 58.3%
Chemung High 17 47.1%
Chenango High 10 40%
Columbia High 13 38.5%
Cortland High 8 50%
Delaware High 10 40%
Dutchess High 58 36.2%
Erie High 195 37.4%
Genesee High 11 36.4%
Greene High 13 38.5%
Livingston High 10 60%
Madison High 12 50%
Onondaga High 90 30%
Ontario High 23 43.5%
Orange High 64 34.4%
Otsego High 11 54.5%
Putnam High 20 30%
Rensselaer High 31 54.8%
Schoharie High 7 —
Schuyler High 4 —
Seneca High 8 —
Steuben High 21 33.3%
Sullivan High 16 25%
Tioga High 8 50%
Tompkins High 17 41.2%
Ulster High 34 47.1%
Washington High 14 42.9%
Wyoming High 9 —
Yates High 5 —
Clinton Moderate 15 40%
Jefferson Moderate 18 50%
Lewis Moderate 5 —
Monroe Moderate 142 31%
Montgomery Moderate 14 35.7%
Niagara Moderate 48 41.7%
Oneida Moderate 49 36.7%
Orleans Moderate 11 36.4%
Oswego Moderate 25 32%
Saratoga Moderate 42 52.4%
Schenectady Moderate 34 32.4%
St. Lawrence Moderate 21 38.1%
Wayne Moderate 17 47.1%
Bronx Low 203 24.6%
Essex Low 8 62.5%
Franklin Low 10 50%
Fulton Low 13 61.5%
Hamilton Low — —
Herkimer Low 14 28.6%
Kings Low 389 22.4%
Nassau Low 295 26.1%
New York Low 265 23.8%
Queens Low 359 25.9%
Richmond Low 93 30.1%
Rockland Low 56 28.6%
Suffolk Low 312 30.1%
Warren Low 13 69.2%
Westchester Low 187 25.1%

Sources: EPA Map of Radon Zones, CDC Environmental Health Tracking Network

Frequently Asked Questions

How many counties in New York have high radon risk?

New York has 34 counties classified as EPA Zone 1 (high radon risk), 13 as Zone 2 (moderate), and 15 as Zone 3 (low risk).

Is radon a problem in New York?

New York has 34 high-risk counties where elevated radon is likely. The EPA recommends all homes in New York be tested for radon, regardless of which zone they're in.

How do I check radon levels for my New York address?

Enter your ZIP code in the search box above to see your county's EPA radon zone and available testing data. For your specific home's radon level, you'll need a radon test kit.