Radon levels in New York

Verified county-level radon indicators are available for 62 New York counties. Select a county for its source period and sample details.

High results are most common in Chemung County (52%) and least common in Bronx County (3%)Share of tests at or above 4 pCi/L by county · Radon test results from laboratories, 2008–2017 · 62 of 62 counties have data
Albany County: 16% of tests at or above 4 pCi/L · 2,740 testsAllegany County: 43% of tests at or above 4 pCi/L · 383 testsBronx County: 3% of tests at or above 4 pCi/L · 185 testsBroome County: 25% of tests at or above 4 pCi/L · 5,899 testsCattaraugus County: 41% of tests at or above 4 pCi/L · 599 testsCayuga County: 28% of tests at or above 4 pCi/L · 726 testsChautauqua County: 38% of tests at or above 4 pCi/L · 994 testsChemung County: 52% of tests at or above 4 pCi/L · 1,537 testsChenango County: 33% of tests at or above 4 pCi/L · 961 testsClinton County: 8% of tests at or above 4 pCi/L · 75 testsColumbia County: 40% of tests at or above 4 pCi/L · 573 testsCortland County: 51% of tests at or above 4 pCi/L · 788 testsDelaware County: 28% of tests at or above 4 pCi/L · 1,001 testsDutchess County: 41% of tests at or above 4 pCi/L · 2,133 testsErie County: 18% of tests at or above 4 pCi/L · 13,822 testsEssex County: 11% of tests at or above 4 pCi/L · 133 testsFranklin County: 22% of tests at or above 4 pCi/L · 32 testsFulton County: 12% of tests at or above 4 pCi/L · 334 testsGenesee County: 35% of tests at or above 4 pCi/L · 317 testsGreene County: 28% of tests at or above 4 pCi/L · 525 testsHamilton County: 27% of tests at or above 4 pCi/L · 11 testsHerkimer County: 42% of tests at or above 4 pCi/L · 337 testsJefferson County: 16% of tests at or above 4 pCi/L · 1,204 testsKings County: 8% of tests at or above 4 pCi/L · 707 testsLewis County: 20% of tests at or above 4 pCi/L · 109 testsLivingston County: 38% of tests at or above 4 pCi/L · 519 testsMadison County: 35% of tests at or above 4 pCi/L · 979 testsMonroe County: 15% of tests at or above 4 pCi/L · 7,113 testsMontgomery County: 15% of tests at or above 4 pCi/L · 252 testsNassau County: 5% of tests at or above 4 pCi/L · 631 testsNew York County: 7% of tests at or above 4 pCi/L · 759 testsNiagara County: 14% of tests at or above 4 pCi/L · 2,016 testsOneida County: 35% of tests at or above 4 pCi/L · 2,051 testsOnondaga County: 28% of tests at or above 4 pCi/L · 9,114 testsOntario County: 33% of tests at or above 4 pCi/L · 1,448 testsOrange County: 31% of tests at or above 4 pCi/L · 2,790 testsOrleans County: 24% of tests at or above 4 pCi/L · 143 testsOswego County: 15% of tests at or above 4 pCi/L · 778 testsOtsego County: 38% of tests at or above 4 pCi/L · 1,452 testsPutnam County: 25% of tests at or above 4 pCi/L · 1,020 testsQueens County: 5% of tests at or above 4 pCi/L · 419 testsRensselaer County: 30% of tests at or above 4 pCi/L · 1,577 testsRichmond County: 12% of tests at or above 4 pCi/L · 300 testsRockland County: 15% of tests at or above 4 pCi/L · 824 testsSt. Lawrence County: 13% of tests at or above 4 pCi/L · 151 testsSaratoga County: 22% of tests at or above 4 pCi/L · 4,449 testsSchenectady County: 17% of tests at or above 4 pCi/L · 2,028 testsSchoharie County: 22% of tests at or above 4 pCi/L · 504 testsSchuyler County: 39% of tests at or above 4 pCi/L · 236 testsSeneca County: 21% of tests at or above 4 pCi/L · 319 testsSteuben County: 45% of tests at or above 4 pCi/L · 1,080 testsSuffolk County: 8% of tests at or above 4 pCi/L · 551 testsSullivan County: 20% of tests at or above 4 pCi/L · 257 testsTioga County: 39% of tests at or above 4 pCi/L · 1,419 testsTompkins County: 28% of tests at or above 4 pCi/L · 3,372 testsUlster County: 30% of tests at or above 4 pCi/L · 3,594 testsWarren County: 16% of tests at or above 4 pCi/L · 2,553 testsWashington County: 26% of tests at or above 4 pCi/L · 1,593 testsWayne County: 27% of tests at or above 4 pCi/L · 793 testsWestchester County: 16% of tests at or above 4 pCi/L · 3,463 testsWyoming County: 39% of tests at or above 4 pCi/L · 338 testsYates County: 46% of tests at or above 4 pCi/L · 135 tests
  • Under 10%
  • 10–20%
  • 20–30%
  • 30–40%
  • 40% or more
  • No data

Counties

CountyTests% ≥ 4 pCi/LMedian (pCi/L)EPA zone (1993)Source
Albany County2,74016%1.4Zone 1Radon test results from laboratories through 2017
Allegany County38343%2.9Zone 1Radon test results from laboratories through 2017
Bronx County1853%0.5Zone 3Radon test results from laboratories through 2017
Broome County5,89925%1.8Zone 1Radon test results from laboratories through 2017
Cattaraugus County59941%3.0Zone 1Radon test results from laboratories through 2017
Cayuga County72628%2.1Zone 1Radon test results from laboratories through 2017
Chautauqua County99438%2.5Zone 1Radon test results from laboratories through 2017
Chemung County1,53752%4.3Zone 1Radon test results from laboratories through 2017
Chenango County96133%2.6Zone 1Radon test results from laboratories through 2017
Clinton County758%1.4Zone 2Radon test results from laboratories through 2017
Columbia County57340%2.7Zone 1Radon test results from laboratories through 2017
Cortland County78851%4.1Zone 1Radon test results from laboratories through 2017
Delaware County1,00128%1.8Zone 1Radon test results from laboratories through 2017
Dutchess County2,13341%3.0Zone 1Radon test results from laboratories through 2017
Erie County13,82218%1.5Zone 1Radon test results from laboratories through 2017
Essex County13311%1.3Zone 3Radon test results from laboratories through 2017
Franklin County3222%1.0Zone 3Radon test results from laboratories through 2017
Fulton County33412%1.2Zone 3Radon test results from laboratories through 2017
Genesee County31735%2.6Zone 1Radon test results from laboratories through 2017
Greene County52528%2.0Zone 1Radon test results from laboratories through 2017
Hamilton County1127%1.5Zone 3Radon test results from laboratories through 2017
Herkimer County33742%3.1Zone 3Radon test results from laboratories through 2017
Jefferson County1,20416%1.5Zone 2Radon test results from laboratories through 2017
Kings County7078%0.7Zone 3Radon test results from laboratories through 2017
Lewis County10920%1.4Zone 2Radon test results from laboratories through 2017
Livingston County51938%3.1Zone 1Radon test results from laboratories through 2017
Madison County97935%2.6Zone 1Radon test results from laboratories through 2017
Monroe County7,11315%1.8Zone 2Radon test results from laboratories through 2017
Montgomery County25215%1.6Zone 2Radon test results from laboratories through 2017
Nassau County6315%1.0Zone 3Radon test results from laboratories through 2017
New York County7597%0.2Zone 3Radon test results from laboratories through 2017
Niagara County2,01614%1.6Zone 2Radon test results from laboratories through 2017
Oneida County2,05135%2.5Zone 2Radon test results from laboratories through 2017
Onondaga County9,11428%2.0Zone 1Radon test results from laboratories through 2017
Ontario County1,44833%2.6Zone 1Radon test results from laboratories through 2017
Orange County2,79031%2.2Zone 1Radon test results from laboratories through 2017
Orleans County14324%2.0Zone 2Radon test results from laboratories through 2017
Oswego County77815%1.4Zone 2Radon test results from laboratories through 2017
Otsego County1,45238%2.8Zone 1Radon test results from laboratories through 2017
Putnam County1,02025%1.9Zone 1Radon test results from laboratories through 2017
Queens County4195%0.8Zone 3Radon test results from laboratories through 2017
Rensselaer County1,57730%2.1Zone 1Radon test results from laboratories through 2017
Richmond County30012%1.0Zone 3Radon test results from laboratories through 2017
Rockland County82415%1.5Zone 3Radon test results from laboratories through 2017
Saratoga County4,44922%2.0Zone 2Radon test results from laboratories through 2017
Schenectady County2,02817%1.7Zone 2Radon test results from laboratories through 2017
Schoharie County50422%1.7Zone 1Radon test results from laboratories through 2017
Schuyler County23639%2.5Zone 1Radon test results from laboratories through 2017
Seneca County31921%2.0Zone 1Radon test results from laboratories through 2017
St. Lawrence County15113%1.2Zone 2Radon test results from laboratories through 2017
Steuben County1,08045%3.4Zone 1Radon test results from laboratories through 2017
Suffolk County5518%1.1Zone 3Radon test results from laboratories through 2017
Sullivan County25720%1.3Zone 1Radon test results from laboratories through 2017
Tioga County1,41939%2.7Zone 1Radon test results from laboratories through 2017
Tompkins County3,37228%2.3Zone 1Radon test results from laboratories through 2017
Ulster County3,59430%2.2Zone 1Radon test results from laboratories through 2017
Warren County2,55316%1.6Zone 3Radon test results from laboratories through 2017
Washington County1,59326%2.0Zone 1Radon test results from laboratories through 2017
Wayne County79327%2.0Zone 2Radon test results from laboratories through 2017
Westchester County3,46316%1.5Zone 3Radon test results from laboratories through 2017
Wyoming County33839%3.0Zone 1Radon test results from laboratories through 2017
Yates County13546%3.5Zone 1Radon test results from laboratories through 2017

Test your home

County figures show how often tests come back high, not the level in your home. Only a test tells you that: see how to test for radon.

Sponsored: we earn a commission on purchases through these links. We haven't tested Airthings monitors yet.

Prefer a digital monitor? See Airthings radon monitors, or enter code radonbycounty-10OFF at their discount store for 10% off.