Ontario County, New York

42°51′N 77°17′W / 42.85°N 77.29°W / 42.85; -77.29

Ontario County is a county in the U.S. State of New York. As of the 2020 census, the population was 112,458.[1] The county seat is Canandaigua.[2] The county is part of the Finger Lakes region of the state.

Ontario County
Ontario County Courthouse in Canandaigua, 2014
Ontario County Courthouse in Canandaigua, 2014
Flag of Ontario County
Official seal of Ontario County
Map of New York highlighting Ontario County
Location within the U.S. state of New York
Map of the United States highlighting New York
New York's location within the U.S.
Coordinates: 42°51′N 77°17′W / 42.85°N 77.29°W / 42.85; -77.29
Country United States
State New York
Founded1789
Named forLake Ontario
SeatCanandaigua
Largest cityGeneva
Area
 • Total663 sq mi (1,720 km2)
 • Land644 sq mi (1,670 km2)
 • Water18 sq mi (50 km2)  2.8%
Population
 (2020)
 • Total112,458
 • Density169/sq mi (65/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional district24th
Websitewww.ontariocountyny.gov

Ontario County is part of the Rochester, NY Metropolitan Statistical Area.

In 2006, Progressive Farmer rated Ontario County as the "Best Place to Live" in the U.S., for its "great schools, low crime, excellent health care" and its proximity to Rochester.

  1. ^ "U.S. Census Bureau QuickFacts: Ontario County, New York". United States Census Bureau. Retrieved January 2, 2022.
  2. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.