Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
Locations and reports
Radon Levels in Niagara County, New York
EPA puts Niagara County in Zone 2, its middle radon zone, and only 9 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
14.3%
10.2 pts below NY
- Niagara
- 14.3%
- New York
- 24.5%
2,016 tests, 2008 to 2017
Median result
1.6pCi/L
Below action level
- Niagara
- 1.6 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
2,016
15th of 61 by tests
- Niagara
- 2,016
- 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
50 of 61
Lowest quarter
- Niagara
- 14.3%
- Chemung
- 52.3%
By share, of 61 with 30+ tests
Read a result for Niagara County
Starts at Niagara County's median, 1.6 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.6 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. Niagara County's median reported result, 2008 to 2017.
The data
Niagara County, At a glance
Niagara County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Niagara 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 Niagara County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 3.8% |
| 2015 | 15.4% |
| 2016 | 24.6% |
| 2017 | 14.3% |
| 2018 | 10.6% |
| 2019 | 3.3% |
| 2020 | 5.1% |
| 2021 | 25.0% |
| 2022 | 12.5% |
| 2023 | 11.1% |
2023: 11.1%. Across these years the share ran from 3.3% to 25.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 9 tests were reported to CDC for Niagara 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).
Niagara County, Compared
Niagara County radon figures, compared
Calculated by Radon411Niagara County reports fewer high tests than New York overall. 14.3% of its 2,016 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 10.2 points below the 24.5% pooled from 62 New York counties.
The newest figure, in 2023, counts only 9 tests (11.1% at or above 4 pCi/L), too few to compare, so this reading uses the 2,016-test figure.
Ordered from highest share down, it comes 50th of 61 New York counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 35.7%; Niagara County sits 21.4 points below it.
Next door, the shares run from 18.2% in Erie County to 34.7% in Genesee County. Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 14.3% share point the same way here.
Half the tests came in under 1.6 pCi/L and half over it; the single highest reached 110.5 pCi/L. The rest split 59.8% under 2 pCi/L and 25.9% from 2 to 4 (New York: 51.7% and 23.7%). Year by year, 2016 opened at 24.6% and 2020 closed at 5.1% (down 19.5 points), with 2016 the high at 24.6%.
The busiest year on file was 2017, with 105 tests reported; the quietest, 2021, had 8.
Niagara CountyNew York, pooled
5.1% % of tests22.7% % of tests
| Year | Tests | Niagara County, at or above 4 pCi/L | New York, pooled |
|---|---|---|---|
| 2016 | 69 | 24.6% | 20.4% |
| 2017 | 105 | 14.3% | 31.6% |
| 2018 | 66 | 10.6% | 26.9% |
| 2019 | 60 | 3.3% | 28.0% |
| 2020 | 39 | 5.1% | 22.7% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Niagara County, State data
New York's own radon test data
MeasuredWhat New York's own agencies publish about radon tests in Niagara 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 Niagara 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
13.3%
Average result
2.3 pCi/L
Tests behind these figures
67.8 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.
Niagara County, Geology
The ground under Niagara County
PredictedUSGS's geologic map puts all of Niagara County's mapped land in one class: moderate radon potential. 98.7% of it lies in the area the map calls Erie-Ontario Lowland, to which USGS gives 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 | 98.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Niagara County beside the ground around it
Across New York 48.9% of the land is rated high; none of Niagara County's is. Of the 3 counties that border it, 2 have more high-potential ground, Erie County the most at 81.2%.
The map rates the ground, not the air in any home.
Local help
Niagara County, Local resources
Radon testing and mitigation in Niagara 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
Niagara County, Questions
Questions about radon in Niagara County
Are radon levels high in Niagara County?
In 2023, 11.1% of the radon tests reported to CDC for Niagara County, New York were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.2 pCi/L. Of 61 New York counties with 30 or more tests for the same period, 49 reported a higher share; pooled, the state comes to 24.5%.
Which counties border Niagara County?
Niagara County borders 3 counties: Orleans County, Erie County and Genesee County.
Products
Niagara County, Products
Testing a home in Niagara County
In Niagara County, 14.3% of 2,016 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 Niagara County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
MonitorINKBIRD
INK-RD3 battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Niagara County, Bordering counties
Counties bordering Niagara County
Calculated by Radon411- Radon levels in Genesee CountyEPA zone 1
34.7%at or above 4 pCi/L
Median 2.6 pCi/L · 317 tests · 20.4 points above Niagara County
- Radon levels in Orleans CountyEPA zone 2
24.5%at or above 4 pCi/L
Median 2.0 pCi/L · 143 tests · 10.2 points above Niagara County
- Radon levels in Erie CountyEPA zone 1
18.2%at or above 4 pCi/L
Median 1.5 pCi/L · 13,822 tests · 3.9 points above Niagara County
Niagara County, Cities and towns
Cities and towns in Niagara County
About 208,912 people live in Niagara County by the Census Bureau's estimate for July 1, 2025, 3,206 fewer than in 2020 (−1.5%). That works out to 400 people per square mile of land. Its largest town, Niagara Falls, has 47,255 residents, 22.6% of the total. Together its 8 incorporated places hold 50.3% of those residents; the other 49.7% live outside any of them. Testing is reported here more often than across the state: CDC's 2,016 reported tests for 2008 to 2017 come to 9.6 for every 1,000 residents (2025 estimate), against 4.9 for New York.
From Niagara Falls to Barker, CDC publishes no figure by town: each reads Niagara County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Niagara Falls | 47,255 | −2.7% | 22.6% |
| North Tonawanda | 29,806 | −2.1% | 14.3% |
| Lockport | 20,248 | −2.8% | 9.7% |
| Lewiston | 2,492 | −1.8% | 1.2% |
| Youngstown | 1,822 | −2.0% | 0.9% |
| Middleport | 1,692 | −2.9% | 0.8% |
| Wilson | 1,210 | −2.5% | 0.6% |
| Barker | 566 | −2.9% | 0.3% |
Places in Niagara County with a city page: 1 of 1
8 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).
Niagara County, Homes
Homes in Niagara County
Of Niagara County's 100,335 homes, 68% are detached houses, against 41% across New York; 12% are in buildings of five or more homes. Half of its homes were built before 1958, close to New York's 1958: 54% date from before 1960 and 9% from 2000 or later. 71% 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 | Niagara County | New York |
|---|---|---|
| Housing units | 100,335 | 8,539,536 |
| Detached houses | 68% | 41% |
| In buildings of 5 or more | 12% | 34% |
| Mobile homes | 4% | 2% |
| Built before 1960 | 54% | 53% |
| Built since 2000 | 9% | 12% |
| Middle year built | 1958 | 1958 |
| Owner-occupied | 71% | 54% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.