| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oakland | city | Vermont | United States | 44.74 | -73.08 | 830 | |
| Oakledge Park | city | Vermont | United States | 44.45 | -73.23 | 190 | |
| Olcot Falls Mobile Home Park | city | Vermont | United States | 43.68 | -72.31 | 374 | |
| Old Bennington | city | Vermont | United States | 42.88 | -73.21 | 830 | |
| Old City | city | Vermont | United States | 43.88 | -72.37 | 1669 | |
| Orange | city | Vermont | United States | 44.15 | -72.40 | 1669 | |
| Orleans | city | Vermont | United States | 44.82 | -72.23 | 1105 | |
| Orwell | city | Vermont | United States | 43.80 | -73.30 | 400 |