Onondaga County New York ☎ +1 315-435-3516 Last Updated: 06/08/2024 | |
Located in the center of New York State, Onondaga County is a county in the U.S. state of New York. As of the 2020 census, the population was 476,516. The county seat is Syracuse. The county is part of the Central New York region of the state. | |