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Radon Levels in Oneida County, New York

EPA puts Oneida County in Zone 2, its middle radon zone, and only 16 radon tests from it are on file with CDC (2023). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Share at 4+ pCi/L

    34.6%

    10.1 pts above NY

    Oneida
    34.6%
    New York
    24.5%

    2,051 tests, 2008 to 2017

  • Median result

    2.5pCi/L

    Below action level

    Oneida
    2.5 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    2,051

    13th of 61 by tests

    Oneida
    2,051
    Erie
    13,822

    Reported to CDC before any fix, 2008 to 2017

  • EPA radon zone

    Zone 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

  • Rank in New York

    18 of 61

    Middle half

    Oneida
    34.6%
    Chemung
    52.3%

    By share, of 61 with 30+ tests

Read a result for Oneida County

Starts at Oneida County's median, 2.5 pCi/L

2.5pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 2.5 pCi/L

Between 2 and 4 pCi/L

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 4 and aboveEPA says fix it

This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Oneida County's median reported result, 2008 to 2017.

The data

Oneida County, At a glance

Oneida County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Oneida County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

USGS geologic potential: Moderate across 81% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Oneida County, 2023

Share of reported tests at or above 4 pCi/L, by year, Oneida County
Share of reported tests at or above 4 pCi/L, by year, Oneida County
YearShare of reported tests at or above 4 pCi/L
201459.3%
201565.7%
201642.6%
201753.6%
201841.4%
201952.8%
202057.1%
2021100.0%
202211.1%
202325.0%

2023: 25.0%. Across these years the share ran from 11.1% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 16 tests were reported to CDC for Oneida County over 2023, and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.

Measured: CDC tracking data. Figure above: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).

How to read these figures

Oneida County, Compared

Oneida County radon figures, compared

Calculated by Radon411

In Oneida County, about 3 in 10 reported tests over the 2008 to 2017 laboratory totals (709 of 2,051) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 1.1 points lower. Across 62 New York counties pooled together, 24.5% of tests reached that level, so Oneida County runs 10.1 points above its state.

The newest figure, in 2023, counts only 16 tests (25.0% at or above 4 pCi/L), too few to compare, so this reading uses the 2,051-test figure.

Of 5 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 2 a smaller one; the spread is 15.2% (Oswego County) to 41.5% (Herkimer County). By share, Oneida County is 18th of 61 New York counties with 30 or more tests for the same period.

Year by year, 2014 opened at 59.3% and 2020 closed at 57.1% (down 2.2 points), with 2015 the high at 65.7%. Half the tests came in under 2.5 pCi/L and half over it; the single highest reached 89.9 pCi/L. Below the action level, 854 tests (41.6%) came in under 2 pCi/L, against 51.7% statewide, and 488 tests (23.8%) fell between 2 and 4, against 23.7% statewide.

Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 34.6% share point the same way here. USGS geology rates 81% of the county's land moderate radon potential. CDC also counts 71 tests taken after mitigation in Oneida County for the same period: tests in homes where a fix was already in.

The busiest year on file was 2017, with 56 tests reported; the quietest, 2021, had 1.

Share of reported tests at or above 4 pCi/L by year, Oneida County against New York2014 to 2020, years with 30 or more tests: Oneida County 59.3% to 57.1%, the state's pooled share 22.7% in 2020.
Oneida CountyNew York, pooled
Share of reported tests at or above 4 pCi/L by year, Oneida County against New York: data table
YearTestsOneida County, at or above 4 pCi/LNew York, pooled
20145459.3%16.6%
20153565.7%21.4%
20165442.6%20.4%
20175653.6%31.6%
20193652.8%28.0%
20203557.1%22.7%
Oneida County against New York, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Oneida County
Oneida County2,05134.6%2.5 pCi/LThis county
New York, pooled62 counties, pooled97,14524.5%Not pooled−10.1 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+1.1 points
Chemung Countyhighest in the state1,53752.3%4.3 pCi/L+17.7 points
Bronx Countylowest in the state1853.2%0.5 pCi/L−31.4 points
Herkimer County, NYborders it33741.5%3.1 pCi/L+6.9 points
Otsego County, NYborders it1,45237.6%2.8 pCi/L+3.0 points
Madison County, NYborders it97934.6%2.6 pCi/LLevel
Lewis County, NYborders it10920.2%1.4 pCi/L−14.4 points
Oswego County, NYborders it77815.2%1.4 pCi/L−19.4 points
Where Oneida County's reported results fell, 2008 to 2017, laboratory, beside New York and the United States
ResultOneida County testsOneida County shareNew York shareU.S. shareAgainst New York
Under 2 pCi/L85441.6%51.7%39.6%−10.1 points
2 to 4 pCi/L48823.8%23.7%24.7%+0.1 points
4 pCi/L and above70934.6%24.5%35.7%+10.1 points
Oneida County ranked among the 61 New York counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Livingston County13 of 6151938.3%3.1 pCi/L
Chautauqua County14 of 6199438.0%2.5 pCi/L
Otsego County15 of 611,45237.6%2.8 pCi/L
Genesee County16 of 6131734.7%2.6 pCi/L
Madison County17 of 6197934.6%2.6 pCi/L
Oneida County18 of 612,05134.6%2.5 pCi/L
Chenango County19 of 6196133.4%2.6 pCi/L
Ontario County20 of 611,44832.8%2.6 pCi/L
Orange County21 of 612,79030.6%2.2 pCi/L
Ulster County22 of 613,59429.8%2.2 pCi/L
Rensselaer County23 of 611,57729.5%2.1 pCi/L
Oneida County radon tests by year, against New York's pooled share
YearTestsAt or above 4 pCi/LMedianHighestNew York, pooledChange from the row before
20231625.0%2.1 pCi/L25.9 pCi/L32.0%+13.9 points
20222711.1%1.3 pCi/L4.6 pCi/L22.4%−88.9 points
20211100.0%8.6 pCi/L8.6 pCi/L18.9%+42.9 points
20203557.1%4.3 pCi/L85.9 pCi/L22.7%+4.3 points
20193652.8%4.2 pCi/L24.0 pCi/L28.0%+11.4 points
20182941.4%2.3 pCi/L14.6 pCi/L26.9%−12.2 points
20175653.6%6.0 pCi/L87.0 pCi/L31.6%+11.0 points
20165442.6%1.8 pCi/L46.6 pCi/L20.4%−23.1 points
20153565.7%8.0 pCi/L601.4 pCi/L21.4%+6.4 points
20145459.3%5.0 pCi/L115.2 pCi/L16.6%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Oneida County, State data

New York's own radon test data

Measured

What New York's own agencies publish about radon tests in Oneida County, with their 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 Oneida County

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

44.5%

Average result

11.0 pCi/L

Tests behind these figures

40 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.

Oneida County, Geology

The ground under Oneida County

Predicted

Most of the ground under Oneida County is one class on USGS's geologic map: 81.2% of its land is moderate radon potential, with 9.7% high and 9.1% low. The map puts 59.0% of Oneida County in the area it calls Erie-Ontario Lowland and 22.3% in Tug Hill Plateau, with 2 smaller areas beside them. USGS gives both a radon index of 9, in the moderate band (9 to 11).

USGS's geologic areas under Oneida County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Erie-Ontario LowlandLimestone, dolomite, shale, sandstone, and salt deposits.Moderate959.0%
Tug Hill PlateauLimestone, dolomite, chert.Moderate922.3%
Allegheny PlateauShale, limestone, and sandstone.High129.7%
AdirondacksAnorthosite and charnockitic gneisses.Low89.1%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Oneida County beside the ground around it

New York as a whole has more high-potential ground than Oneida County: 48.9% of its land, against 9.7% here. Of the 5 counties that border it, 2 have more high-potential ground, Otsego County the most at 98.4%.

Share of land by USGS radon potential: Oneida County, the 5 counties bordering it and New York
AreaEPA zoneLow potentialModerate potentialHigh potential
Oneida CountyZone 29.1%81.2%9.7%
Madison CountyZone 1None20.8%79.2%
Herkimer CountyZone 364.1%29.9%6.0%
Oswego CountyZone 2None99.5%None
Lewis CountyZone 239.6%60.4%None
Otsego CountyZone 1None1.6%98.4%
New York62 counties, pooled by land areaVaries22.0%28.2%48.9%

The map rates the ground, not the air in any home.

What it means

Oneida County, Questions

Questions about radon in Oneida County

Are radon levels high in Oneida County?

In 2023, 25.0% of the radon tests reported to CDC for Oneida County, New York were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.1 pCi/L. Of 61 New York counties with 30 or more tests for the same period, 17 reported a higher share; pooled, the state comes to 24.5%.

Which counties border Oneida County?

Oneida County borders 5 counties: Madison County, Herkimer County, Oswego County, Lewis County and Otsego County.

Products

Oneida County, Products

Testing a home in Oneida County

In Oneida County, 34.6% of 2,051 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 24.5% pooled across New York. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Oneida County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Oneida County homes, compared

Explore

Oneida County, Bordering counties

Counties bordering Oneida County

Calculated by Radon411

Oneida County, Cities and towns

Cities and towns in Oneida County

About 226,392 people live in Oneida County by the Census Bureau's estimate for July 1, 2025, 4,873 fewer than in 2020 (−2.1%). That works out to 187 people per square mile of land. Its largest town, Utica, has 62,978 residents, 27.8% of the total. Together its 19 incorporated places hold 53.7% of those residents; the other 46.3% live outside any of them. Testing is reported here more often than across the state: CDC's 2,051 reported tests for 2008 to 2017 come to 9.1 for every 1,000 residents (2025 estimate), against 4.9 for New York.

From Utica to Clayville, CDC publishes no figure by town: each reads Oneida County's.

The 12 largest cities and towns in Oneida County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Utica62,978−3.3%27.8%
Rome31,682−0.7%14.0%
Whitesboro3,559−3.4%1.6%
New York Mills3,162−3.2%1.4%
Sherrill2,973−3.3%1.3%
Yorkville2,572−3.5%1.1%
Camden2,124−3.2%0.9%
Boonville1,986−2.5%0.9%
New Hartford1,842Level0.8%
Clinton1,599−3.4%0.7%
Waterville1,491−3.4%0.7%
Oriskany1,329−0.1%0.6%
  • Vernon
  • Sylvan Beach
  • Oriskany Falls
  • Oneida Castle
  • Remsen
  • Holland Patent
  • Clayville

19 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).

Oneida County, Homes

Homes in Oneida County

Of Oneida County's 105,285 homes, 63% are detached houses, against 41% across New York; 11% are in buildings of five or more homes. Half of its homes were built before 1957, close to New York's 1958: 54% date from before 1960 and 9% from 2000 or later. 68% of occupied homes are lived in by their owner (New York: 54%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Oneida County, New York, 2019 to 2023
HomesOneida CountyNew York
Housing units105,2858,539,536
Detached houses63%41%
In buildings of 5 or more11%34%
Mobile homes5%2%
Built before 196054%53%
Built since 20009%12%
Middle year built19571958
Owner-occupied68%54%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.