| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Olympic Mobile Home Park | city | New Hampshire | United States | 43.64333 | -72.17972 | 1315 | 8532 |
| Onway Lake | city | New Hampshire | United States | 43.03417 | -71.21667 | 265 | 9214 |
| Orange | city | New Hampshire | United States | 43.65444 | -71.97194 | 1220 | 1594 |
| Orford | city | New Hampshire | United States | 43.90528 | -72.14056 | 436 | 1153 |
| Orfordville | city | New Hampshire | United States | 43.88333 | -72.10278 | 777 | 873 |
| Oscars Mobile Home Park | city | New Hampshire | United States | 43.66083 | -72.26139 | 721 | 12613 |
| Ossipee | city | New Hampshire | United States | 43.68528 | -71.11722 | 672 | 2257 |
| Ossipee Lake Shores | city | New Hampshire | United States | 43.8025 | -71.09417 | 403 | 1279 |
| Ossipee Valley | city | New Hampshire | United States | 43.79194 | -71.17806 | 465 | 1564 |
| Otterville | city | New Hampshire | United States | 43.42944 | -72.04611 | 1197 | 3029 |
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