The Otsego County Chamber Government go Results Found: 3 Button group with nested dropdown City of Oneonta City of Oneonta 258 Main Street Oneonta NY 13820 (607) 432-6450 Visit Website United States Army United States Army 100 Main Street Oneonta NY 13820 (607) 432-5530 Visit Website Otsego County Treasurer's Office Otsego County Treasurer's Office (607) 547-4235 Share this content with your networks: