---
title: "Vermont Radon by Town: Key Findings from State Data"
url: https://vermontradon.com/vermont-radon-data-findings/
description: "Which Vermont towns and counties have the highest share of elevated radon results, how many homes have been tested, and what the numbers can't tell you. From Health Department data."
last_reviewed: 2026-10-19
source: "Vermont Department of Health; U.S. EPA; VCGI. Each fact is footnoted to its source below."
data: "Vermont Department of Health town-level radon test results, retrieved 2026-10-17"
publisher: "Vermont Radon, an independent guide, not affiliated with the Vermont Department of Health or EPA. Not medical advice."
---

# Vermont radon by town: key findings

Of 26,805 locations tested with Vermont Department of Health kits, 4,069 (15%) had radon at or above 4.0 pCi/L, by our count of the Health Department’s town results retrieved October 17, 2026.[^1] The Health Department’s own statewide figure is that one in seven Vermont homes has elevated radon.[^2] Other published Vermont figures count different things; see [why the numbers differ](https://vermontradon.com/understanding-results/#different-numbers).

## Key findings

- **Testing is still rare.** The tested locations add up to about 9.3% of the state’s 289,586 residences counted in the same data.[^1] 7 places have no results at all: Avery’s Gore, Ferdinand, Glastenbury, Lewis, Somerset, Warner’s Grant and Warren’s Gore.[^1]
- **High results turn up everywhere.** 74 of the 212 towns with at least 20 results had 20% or more of tested locations at or above 4.0 pCi/L.[^1] The Health Department says high levels have been found in all types of homes in every area of Vermont.[^3]
- **The highest shares (calculated):** Burke (43%), Newark (42%), Sutton (39%), among towns with at least 20 results.[^1]
- **By county:** Caledonia County and Orange County had the highest share of elevated results (24%); Franklin County the lowest (9%), counting every town’s results together.[^1]
- **Most tested:** Burlington has the most results (1,267), and 70 of them (6%) were elevated.[^1]

**What these numbers can’t tell you:** your home’s level. Neighboring homes can have very different radon levels,[^2] and the EPA advises against using results from other homes to estimate yours.[^4] The data count Health Department test kits sent in from each town, so they describe the homes that were tested, not every home. The only way to know is to [test your home](https://vermontradon.com/how-to-test/).

## Towns with the highest share of elevated results

Towns with at least 20 results, the threshold the Health Department uses to show a town rate.[^5]

*The 15 Vermont towns with the highest share of tested locations at or above 4.0 pCi/L*

| Town | County | Locations tested | Elevated | Share elevated |
| --- | --- | --- | --- | --- |
| [Burke](https://vermontradon.com/towns/burke/) | [Caledonia](https://vermontradon.com/counties/caledonia/) | 63 | 27 | 43% |
| [Newark](https://vermontradon.com/towns/newark/) | [Caledonia](https://vermontradon.com/counties/caledonia/) | 38 | 16 | 42% |
| [Sutton](https://vermontradon.com/towns/sutton/) | [Caledonia](https://vermontradon.com/counties/caledonia/) | 28 | 11 | 39% |
| [West Rutland](https://vermontradon.com/towns/west-rutland/) | [Rutland](https://vermontradon.com/counties/rutland/) | 55 | 21 | 38% |
| [Wells](https://vermontradon.com/towns/wells/) | [Rutland](https://vermontradon.com/counties/rutland/) | 39 | 15 | 38% |
| [Danby](https://vermontradon.com/towns/danby/) | [Rutland](https://vermontradon.com/counties/rutland/) | 60 | 22 | 37% |
| [Bristol](https://vermontradon.com/towns/bristol/) | [Addison](https://vermontradon.com/counties/addison/) | 272 | 99 | 36% |
| [Groton](https://vermontradon.com/towns/groton/) | [Caledonia](https://vermontradon.com/counties/caledonia/) | 39 | 14 | 36% |
| [Brookfield](https://vermontradon.com/towns/brookfield/) | [Orange](https://vermontradon.com/counties/orange/) | 76 | 25 | 33% |
| [Pawlet](https://vermontradon.com/towns/pawlet/) | [Rutland](https://vermontradon.com/counties/rutland/) | 73 | 24 | 33% |
| [Eden](https://vermontradon.com/towns/eden/) | [Lamoille](https://vermontradon.com/counties/lamoille/) | 30 | 10 | 33% |
| [Hartland](https://vermontradon.com/towns/hartland/) | [Windsor](https://vermontradon.com/counties/windsor/) | 110 | 34 | 31% |
| [Dorset](https://vermontradon.com/towns/dorset/) | [Bennington](https://vermontradon.com/counties/bennington/) | 101 | 31 | 31% |
| [Chittenden](https://vermontradon.com/towns/chittenden/) | [Rutland](https://vermontradon.com/counties/rutland/) | 72 | 22 | 31% |
| [Middletown Springs](https://vermontradon.com/towns/middletown-springs/) | [Rutland](https://vermontradon.com/counties/rutland/) | 62 | 19 | 31% |

Source: Vermont Department of Health town results; shares calculated by Vermont Radon from the Health Department’s counts.[^1] Every town is on [Radon test results for every Vermont town](https://vermontradon.com/towns/).

## Counties, from highest to lowest share

*Diagram: see the HTML page at https://vermontradon.com/vermont-radon-data-findings/*

**Vermont’s radon skyline.** Each county is raised by the share of its tested locations with results at or above 4.0 pCi/L, and shaded in the same groups as the [town map](https://vermontradon.com/towns/). The heights are Vermont Radon’s calculations, adding up the Health Department’s results for every town in the county.[^1] They describe the locations that were tested with Health Department kits, not every home, and a county’s share can’t predict any one home’s level. The table below has the same figures. County outlines from VCGI, simplified.[^6]

*Vermont counties by share of tested locations at or above 4.0 pCi/L*

| County | Locations tested | Elevated | Share elevated (calculated) |
| --- | --- | --- | --- |
| [Caledonia County](https://vermontradon.com/counties/caledonia/) | 1,210 | 293 | 24% |
| [Orange County](https://vermontradon.com/counties/orange/) | 1,132 | 277 | 24% |
| [Grand Isle County](https://vermontradon.com/counties/grand-isle/) | 471 | 99 | 21% |
| [Washington County](https://vermontradon.com/counties/washington/) | 3,814 | 786 | 21% |
| [Essex County](https://vermontradon.com/counties/essex/) | 161 | 33 | 20% |
| [Bennington County](https://vermontradon.com/counties/bennington/) | 967 | 181 | 19% |
| [Addison County](https://vermontradon.com/counties/addison/) | 1,961 | 309 | 16% |
| [Rutland County](https://vermontradon.com/counties/rutland/) | 2,074 | 326 | 16% |
| [Windsor County](https://vermontradon.com/counties/windsor/) | 1,741 | 285 | 16% |
| [Lamoille County](https://vermontradon.com/counties/lamoille/) | 1,088 | 162 | 15% |
| [Orleans County](https://vermontradon.com/counties/orleans/) | 1,002 | 145 | 14% |
| [Windham County](https://vermontradon.com/counties/windham/) | 1,559 | 205 | 13% |
| [Chittenden County](https://vermontradon.com/counties/chittenden/) | 8,191 | 839 | 10% |
| [Franklin County](https://vermontradon.com/counties/franklin/) | 1,434 | 129 | 9% |
| Vermont | 26,805 | 4,069 | 15% |

County and statewide shares are Vermont Radon’s calculations, adding up the Health Department’s results for every town in the county.[^1]

## Using these figures

Reporters, town officials, teachers and real estate professionals are welcome to use these figures. Download every town’s results as [CSV](https://vermontradon.com/data/vermont-radon-by-town.csv) or [JSON](https://vermontradon.com/data/vermont-radon-by-town.json), and see [how to cite this data](https://vermontradon.com/towns/#cite-this-data). Please credit the Vermont Department of Health for the results and say that county and statewide totals are Vermont Radon’s calculations.

Questions about the data: [hello@vermontradon.com](mailto:hello@vermontradon.com?subject=Radon%20data). For health questions, call the Vermont Radon Program at 802-863-7220 or 800-439-8550 (toll-free in Vermont).[^2]

## Next steps

- [Every town’s results](https://vermontradon.com/towns/)
- [Why radon varies across Vermont](https://vermontradon.com/why-radon-varies-vermont/)
- [How to test your home](https://vermontradon.com/how-to-test/)
- [Radon Action Week and Month](https://vermontradon.com/radon-action-month-vermont/)

## Sources

[^1]: **Vermont Department of Health**. [Radon Risk in Vermont: test results by town (map data, JSON)](https://maps.healthvermont.gov/arcgis/rest/services/VDH/EnvHealthRadonRisk_Testing/MapServer/1/query?where=1%3D1&outFields=*&returnGeometry=false&f=pjson). Checked 2026-10-17.
[^2]: **Vermont Department of Health**. [Radon in Your Home](https://www.healthvermont.gov/environment/healthy-homes/radon). Checked 2026-10-17.
[^3]: **Vermont Department of Health**. [Testing for Radon in Your Home (fact sheet, July 2025)](https://www.healthvermont.gov/sites/default/files/document/env-hh-radon-testing-for-radon-in-your-home.pdf). Checked 2026-10-17.
[^4]: **U.S. Environmental Protection Agency**. [Home Buyer’s and Seller’s Guide to Radon (EPA 402/K-24/001, March 2024)](https://www.epa.gov/sites/default/files/2015-05/documents/hmbuygud.pdf). Checked 2026-10-17.
[^5]: **Vermont Department of Health**. [Radon Risk in Vermont (interactive map)](https://experience.arcgis.com/experience/85d1e95789dc4281b6a9502397887401/). Checked 2026-10-17.
[^6]: **Vermont Center for Geographic Information (VCGI)**. [VT Data - Town Boundaries (BNDHASH; for general mapping purposes only)](https://geodata.vermont.gov/datasets/VCGI::vt-data-town-boundaries). Checked 2026-10-17.