Otsego County is a county in the U.S. state of New York located within the Mohawk Valley Region. As of the 2020 census, the population was 58,524. The county seat is Cooperstown. The county's population center is Oneonta. The name Otsego is from a Mohawk or Oneida word meaning "place of the rock." The county is part of the Mohawk Valley region of the state.

Cooperstown is a village in and the county seat of Otsego County, New York, United States. Most of the village lies within the town of Otsego, but some of the eastern part is in the town of Middlefield. Located at the foot of Otsego Lake in the Central New York Region, Cooperstown is approximately 60 miles west of Albany, 67 mi (108 km) southeast of Syracuse and 145 mi (233 km) northwest of New York City. The population of the village was 1,794 as of the 2020 census.