Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
Locations and reports
Radon Levels in Oswego County, New York
EPA puts Oswego County in Zone 2, its middle radon zone, and only 1 radon test from it is 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
15.2%
9.3 pts below NY
- Oswego
- 15.2%
- New York
- 24.5%
778 tests, 2008 to 2017
Median result
1.4pCi/L
Below action level
- Oswego
- 1.4 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
778
32nd of 61 by tests
- Oswego
- 778
- Erie
- 13,822
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in New York
46 of 61
Middle half
- Oswego
- 15.2%
- Chemung
- 52.3%
By share, of 61 with 30+ tests
Read a result for Oswego County
Starts at Oswego County's median, 1.4 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.4 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Oswego County's median reported result, 2008 to 2017.
The data
Oswego County, At a glance
Oswego County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Oswego County is a
USGS geologic potential: Moderate across 99% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Oswego County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 0.0% |
| 2015 | 50.0% |
| 2016 | 37.5% |
| 2017 | 11.5% |
| 2018 | 0.0% |
| 2019 | 27.3% |
| 2020 | 0.0% |
| 2021 | 0.0% |
| 2022 | 0.0% |
| 2023 | 0.0% |
2023: 0.0%. Across these years the share ran from 0.0% to 50.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 1 test was reported to CDC for Oswego 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).
Oswego County, Compared
Oswego County radon figures, compared
Calculated by Radon411Oswego County's 778 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.4 pCi/L and a maximum of 89.5 pCi/L, and 15.2% reached 4 pCi/L. New York as a whole (62 New York counties, pooled) comes to 24.5%: 9.3 points higher than here.
The newest figure, in 2023, counts only 1 test (0.0% at or above 4 pCi/L), too few to compare, so this reading uses the 778-test figure.
Among its state's counties it ranks 46th of 61 New York counties with 30 or more tests for the same period. Statewide for the same period, Chemung County reported the highest share (52.3%) and Bronx County the lowest (3.2%).
Below the action level, 490 tests (63.0%) came in under 2 pCi/L, against 51.7% statewide, and 170 tests (21.9%) fell between 2 and 4, against 23.7% statewide. The busiest year on file was 2017, with 26 tests reported; the quietest, 2023, had 1.
EPA's 1993 zone map puts Oswego County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 99% of the county's land moderate radon potential.
Next door, the shares run from 16.0% in Jefferson County to 34.6% in Oneida County.
CDC also counts 42 tests taken after mitigation in Oswego County for the same period: tests in homes where a fix was already in.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Oswego County, State data
New York's own radon test data
MeasuredWhat New York's own agencies publish about radon tests in Oswego 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 Oswego 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
24.4%
Average result
4.9 pCi/L
Tests behind these figures
9 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.
Oswego County, Geology
The ground under Oswego County
PredictedUSGS's geologic map puts all of Oswego County's mapped land in one class: moderate radon potential. The map puts 83.3% of Oswego County in the area it calls Erie-Ontario Lowland and 16.2% in Tug Hill Plateau. USGS gives both a radon index of 9, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Erie-Ontario Lowland | Limestone, dolomite, shale, sandstone, and salt deposits. | Moderate | 9 | 83.3% |
| Tug Hill Plateau | Limestone, dolomite, chert. | Moderate | 9 | 16.2% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Oswego County beside the ground around it
Across New York 48.9% of the land is rated high; none of Oswego County's is. Of the 6 counties that border it, 4 have more high-potential ground, Madison County the most at 79.2%.
The map rates the ground, not the air in any home.
Local help
Oswego County, Local resources
Radon testing and mitigation in Oswego County
- Radon ProgramRadon Program, run by New York State Department of Health, does not license radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in New York.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Providing patients with information about how low-cost test kits may be obtained from the Radon Program.
- Compare kits
- Professionals in New York88 professionals are listed in New York.
What New York's program says
- Phone
- 518-402-7556
- radon@health.ny.gov
- Licensing of radon professionals
NYS does not certify or license radon testers.
What it means
Oswego County, Questions
Questions about radon in Oswego County
Are radon levels high in Oswego County?
In 2023, 0.0% of the radon tests reported to CDC for Oswego County, New York were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.0 pCi/L. Of 61 New York counties with 30 or more tests for the same period, 45 reported a higher share; pooled, the state comes to 24.5%.
Which counties border Oswego County?
Oswego County borders 6 counties: Onondaga County, Cayuga County, Oneida County, Madison County, Jefferson County and Lewis County.
Products
Oswego County, Products
Testing a home in Oswego County
In Oswego County, 15.2% of 778 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 Oswego County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Monitor
View Radon Wi-Fi radon monitor with an e-paper display
- C-NRPP 2024/25: Approved
- Battery
- Wi-Fi, Bluetooth
- Screen, app
Method: Alpha spectrometry
Readings: Every 60 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Oswego County, Bordering counties
Counties bordering Oswego County
Calculated by Radon411- Radon levels in Oneida CountyEPA zone 2
34.6%at or above 4 pCi/L
Median 2.5 pCi/L · 2,051 tests · 19.4 points above Oswego County
- Radon levels in Madison CountyEPA zone 1
34.6%at or above 4 pCi/L
Median 2.6 pCi/L · 979 tests · 19.4 points above Oswego County
- Radon levels in Onondaga CountyEPA zone 1
28.4%at or above 4 pCi/L
Median 2.0 pCi/L · 9,114 tests · 13.2 points above Oswego County
- Radon levels in Cayuga CountyEPA zone 1
27.8%at or above 4 pCi/L
Median 2.1 pCi/L · 726 tests · 12.6 points above Oswego County
- Radon levels in Lewis CountyEPA zone 2
20.2%at or above 4 pCi/L
Median 1.4 pCi/L · 109 tests · 5.0 points above Oswego County
- Radon levels in Jefferson CountyEPA zone 2
16.0%at or above 4 pCi/L
Median 1.5 pCi/L · 1,204 tests · 0.8 points above Oswego County
Oswego County, Cities and towns
Cities and towns in Oswego County
The Census Bureau estimates 118,569 residents in Oswego County for July 1, 2025, 1,132 more than in 2020 (+1.0%). That works out to 125 people per square mile of land. No town dominates: Oswego, the largest, has 17,024 residents, 14.4% of the total. Together its 11 incorporated places hold 32.9% of those residents; the other 67.1% live outside any of them. CDC's 778 reported tests for 2008 to 2017 work out to 6.6 per 1,000 residents (2025 estimate), close to New York's 4.9.
From Oswego to Parish, CDC publishes no figure by town: each reads Oswego County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Oswego | 17,024 | +0.7% | 14.4% |
| Fulton | 11,188 | −1.5% | 9.4% |
| Pulaski | 2,269 | +4.4% | 1.9% |
| Phoenix | 2,192 | −1.3% | 1.8% |
| Central Square | 1,852 | −0.3% | 1.6% |
| Mexico | 1,553 | −1.2% | 1.3% |
| Cleveland | 729 | −1.0% | 0.6% |
| Lacona | 662 | −0.5% | 0.6% |
| Sandy Creek | 618 | −1.1% | 0.5% |
| Hannibal | 536 | −1.1% | 0.5% |
| Parish | 445 | −1.8% | 0.4% |
11 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).
Oswego County, Homes
Homes in Oswego County
Of Oswego County's 54,697 homes, 69% are detached houses, against 41% across New York; 12% are mobile homes. Much of Oswego County is recent building: 12% of its homes have gone up since 2000 and the middle year built is 1971, against 1958 for New York. 74% 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 | Oswego County | New York |
|---|---|---|
| Housing units | 54,697 | 8,539,536 |
| Detached houses | 69% | 41% |
| In buildings of 5 or more | 7% | 34% |
| Mobile homes | 12% | 2% |
| Built before 1960 | 41% | 53% |
| Built since 2000 | 12% | 12% |
| Middle year built | 1971 | 1958 |
| Owner-occupied | 74% | 54% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.