Herkimer County is a county in the U.S. state of New York. As of the 2020 census, the population was 60,139. Its county seat is Herkimer. The county was created in 1791 north of the Mohawk River out of part of Montgomery County. It is named after General Nicholas Herkimer, who died from battle wounds in 1777 after taking part in the Battle of Oriskany during the Revolutionary War.

Herkimer is a village on the north side of the Mohawk River and the county seat of Herkimer County, New York, United States, about 15 miles (24 km) southeast of Utica. As of the 2020 Census, it had a population of 7,234, and a predicted population of 7,283 on July 1, 2022. It was part of the Burnetsfield Patent and the first colonial settlement this far west in the Mohawk Valley.