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 Hamilton County, New York
EPA puts Hamilton County in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2018). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
41.5%
Herkimer County
- Herkimer
- 41.5%
- Essex
- 10.5%
7 of 7 neighbours have 30+ tests, 2008 to 2017
Nearest county
41.5%
Herkimer County, 29 miles
- Herkimer
- 41.5%
- New York
- 24.5%
Share at 4+ pCi/L, 337 tests, 2008 to 2017
Ground above low
None
77.0 pts below New York
- Hamilton
- 0.0%
- New York
- 77.0%
Share of land USGS rates moderate or high potential
Tests reported
11
Too few for a share
- Hamilton
- 11
- Needed
- 30
2008 to 2017, laboratory
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Hamilton County
Starts at EPA's action level
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.0 pCi/L
At or above 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher.
The data
Hamilton County, At a glance
Hamilton County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Hamilton County, 2018
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2015 | 100.0% |
| 2016 | 0.0% |
| 2018 | 0.0% |
2018: 0.0%. Across these years the share ran from 0.0% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 1 test was reported to CDC for Hamilton County over 2018, 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: 2018. Measured data period: 2005 to 2018 (every CDC figure on file).
Hamilton County, Compared
Hamilton County radon figures, compared
Calculated by Radon411CDC's largest figure for Hamilton County rests on 11 tests over the 2008 to 2017 laboratory totals, 3 of them at or above 4 pCi/L, so each test moves its share by 9.1 points and no rank or comparison is drawn from it. Results reached as high as 8.1 pCi/L, with a middle value of 1.5 pCi/L.
Of the counties bordering it, 7 have a figure over the 2008 to 2017 laboratory totals: Herkimer County reported the largest share at or above 4 pCi/L, 41.5%, and Essex County the smallest, 10.5%, with Saratoga County at 22.3%, Franklin County at 21.9% and Warren County at 15.7% between. Farther out, Lewis County (48 miles away) at 20.2%, Montgomery County (52 miles away) at 14.7% and Oneida County (55 miles away) at 34.6% have figures too. Pooled across 62 New York counties, 24.5% of reported tests reached that level; across every county in the country with a figure, 35.7%.
Statewide for the same period, Chemung County reported the highest share (52.3%) and Bronx County the lowest (3.2%). EPA's 1993 map puts Hamilton County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Hamilton County, State data
New York's own radon test data
MeasuredWhat New York's own agencies publish about radon tests in Hamilton 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 Hamilton 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
33.3%
Average result
5.1 pCi/L
Tests behind these figures
0.8 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.
Hamilton County, Geology
The ground under Hamilton County
PredictedUSGS's geologic map puts all of Hamilton County's mapped land in one class: low radon potential. All of it lies in the area the map calls Adirondacks, to which USGS gives a radon index of 8, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Adirondacks | Anorthosite and charnockitic gneisses. | Low | 8 | 99.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Hamilton County beside the ground around it
Across New York 48.9% of the land is rated high; none of Hamilton County's is. Of the 7 counties that border it, 2 have more high-potential ground, Herkimer County the most at 6.0%.
The map rates the ground, not the air in any home.
Local help
Hamilton County, Local resources
Radon testing and mitigation in Hamilton 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
Hamilton County, Questions
Questions about radon in Hamilton County
Are radon levels high in Hamilton County?
In 2018, 0.0% of the radon tests reported to CDC for Hamilton County, New York were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.7 pCi/L. Of the counties bordering it, 7 have a figure over the 2008 to 2017 laboratory totals: Herkimer County reported the largest share at or above 4 pCi/L, 41.5%, and Essex County the smallest, 10.5%, with Saratoga County at 22.3%, Franklin County at 21.9% and Warren County at 15.7% between.
Which counties border Hamilton County?
Hamilton County borders 7 counties: Herkimer County, Warren County, Fulton County, Saratoga County, Essex County, Franklin County and St. Lawrence County.
Products
Hamilton County, Products
Testing a home in Hamilton County
No CDC figure names Hamilton County; the nearest county with one, Herkimer County (29 miles away), reported 41.5% of its tests at or above 4 pCi/L over the 2008 to 2017 laboratory totals, the only reading nearby until a test of this home. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Hamilton County.
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
MonitorSafetySiren
Pro4 plug-in radon detector with a display and alarm
- C-NRPP 2024/25: Not included
- Plug-in
- Alarm
- Screen
First reading: Within 48 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Hamilton County, Bordering counties
Counties bordering Hamilton County
Calculated by Radon411- Radon levels in Herkimer CountyEPA zone 3
41.5%at or above 4 pCi/L
Median 3.1 pCi/L · 337 tests
- Radon levels in Saratoga CountyEPA zone 2
22.3%at or above 4 pCi/L
Median 2.0 pCi/L · 4,449 tests
- Radon levels in Franklin CountyEPA zone 3
21.9%at or above 4 pCi/L
Median 1.0 pCi/L · 32 tests
- Radon levels in Warren CountyEPA zone 3
15.7%at or above 4 pCi/L
Median 1.6 pCi/L · 2,553 tests
- Radon levels in St. Lawrence CountyEPA zone 2
13.2%at or above 4 pCi/L
Median 1.2 pCi/L · 151 tests
- Radon levels in Fulton CountyEPA zone 3
11.7%at or above 4 pCi/L
Median 1.2 pCi/L · 334 tests
- Radon levels in Essex CountyEPA zone 3
10.5%at or above 4 pCi/L
Median 1.3 pCi/L · 133 tests
Hamilton County, Cities and towns
Cities and towns in Hamilton County
About 5,006 people live in Hamilton County by the Census Bureau's estimate for July 1, 2025, 67 fewer than in 2020 (−1.3%). Spread over its land, that is 2.9 people to the square mile. Speculator, its one incorporated place, has 398 residents, 8.0% of the total. Reported testing is thin here: 11 tests over 2008 to 2017, or 2.2 for every 1,000 residents (2025 estimate), where New York as a whole comes to 4.9.
Speculator is the one incorporated place here; CDC publishes no figure by town, so it reads Hamilton County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Speculator | 398 | −1.2% | 8.0% |
One incorporated place, 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).
Hamilton County, Homes
Homes in Hamilton County
Hamilton County is a place of houses on their own lots: 86% of its 7,893 homes are detached single-family houses, against 41% across New York. Much of Hamilton County is recent building: 15% of its homes have gone up since 2000 and the middle year built is 1968, against 1958 for New York. Owners live in 82% of the occupied homes (New York: 54%), so for most households a test and a fix are their own to order.
| Homes | Hamilton County | New York |
|---|---|---|
| Housing units | 7,893 | 8,539,536 |
| Detached houses | 86% | 41% |
| In buildings of 5 or more | 1% | 34% |
| Mobile homes | 11% | 2% |
| Built before 1960 | 39% | 53% |
| Built since 2000 | 15% | 12% |
| Middle year built | 1968 | 1958 |
| Owner-occupied | 82% | 54% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.