| County | Rank | Change (2020) ↓ | 2025 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Franklin County | 1 | 2.99% | 51,544 | 50,046 |
| Orange County | 2 | 2.64% | 30,069 | 29,295 |
| Grand Isle County | 3 | 1.99% | 7,421 | 7,276 |
| Essex County | 4 | 1.96% | 6,036 | 5,920 |
| Addison County | 5 | 1.86% | 38,050 | 37,355 |
| Caledonia County | 6 | 1.57% | 30,656 | 30,182 |
| Chittenden County | 7 | 0.79% | 169,729 | 168,395 |
| Washington County | 8 | 0.73% | 60,196 | 59,757 |
| Windham County | 9 | 0.52% | 46,100 | 45,860 |
| Windsor County | 10 | 0.46% | 58,003 | 57,738 |
| Lamoille County | 11 | 0.19% | 25,974 | 25,924 |
| Orleans County | 12 | 0.08% | 27,424 | 27,403 |
| Rutland County | 13 | -0.62% | 60,107 | 60,484 |
| Bennington County | 14 | -1.17% | 36,863 | 37,301 |
Vermont's counties show varied growth patterns from 2020 to 2025. Franklin County leads with 2.99% annualized growth, followed by Orange County (2.64%) and Grand Isle County (1.99%). The largest counties are Chittenden County (169,729), Washington County (60,196), and Rutland County (60,107). Of the 14 counties in Vermont, 12 are growing while 2 have experienced population decline. Overall, counties averaged 1% annualized growth, with total population growing by 0.81% annually.