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State overview
Radon in Vermont
Of Vermont's 14 counties and county equivalents, EPA places 12 in Zone 2, 2 in Zone 3. Zones are county-wide predictions; testing is the only way to know your home's level.
Radon in the news
Vermont stories
- Nearly 25% of schools in Vermont hadn’t tested for radon, more than four years after state mandateVTDigger · 2026-03-13
Headlines link to the original publishers via Google News. Updated 2026-10-27.
All 14 counties
| County | EPA zone |
|---|---|
| Addison County | Zone 2 |
| Bennington County | Zone 2 |
| Caledonia County | Zone 2 |
| Chittenden County | Zone 3 |
| Essex County | Zone 2 |
| Franklin County | Zone 2 |
| Grand Isle County | Zone 3 |
| Lamoille County | Zone 2 |
| Orange County | Zone 2 |
| Orleans County | Zone 2 |
| Rutland County | Zone 2 |
| Washington County | Zone 2 |
| Windham County | Zone 2 |
| Windsor County | Zone 2 |
Source: EPA radon zones spreadsheet (EPA 402/A-16/001).