Place List: O, sorted alphabetically (number of total localities in parentheses):
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1. Oblong, New York, USA  2. Oneida County, New York, USA 3. Oneida, New York, USA (8) |
4. Onieda, New York, USA (4) 5. Onondaga, New York, USA (1) 6. Orange, New York, USA (1) |
7. Oswego, New York, USA (2) 8. Otsego, New York, USa (22) |
