Ontario County is a county in the U.S. state of New York. As of 2025, the population was 113,130. The county seat is Canandaigua. The county is part of the Finger Lakes region of the state.

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Country: United States
Inception: 1789
Website: http://www.co.ontario.ny.us

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Facts from Wikidata (CC0). Image by Daniel Case via Wikimedia Commons (CC BY-SA 3.0).

Ontario County

county in New York, United States

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