Oneida is a city in Madison County in the U.S. state of New York. It is located west of Oneida Castle and east of Wampsville. The population was 11,390 at the 2010 census. The city, like both Oneida County and the nearby silver and china maker, was named for the Oneida tribe, which had a large territory here around Oneida Lake during the colonial period.

Madison County is a county located in the U.S. state of New York. As of the 2020 census, the population was 68,016. Its county seat is Wampsville. The county is named after James Madison, the fourth president of the United States, and was first formed in 1806. The county is part of the Central New York region of the state.