Conesus Lake is a hamlet and census-designated place (CDP) in Livingston County, New York, United States. As of the 2020 census, Conesus Lake had a population of 2,270. The community is located in the towns of Geneseo, Livonia, Groveland, and Conesus and covers Conesus Lake, the westernmost of New York's Finger Lakes, and nearly all of the lake's shoreline communities.
According to the U.S. Census Bureau, the community has an area of ; of its area is land, and are water. It is bordered to the north by the hamlet of Lakeville at the lake's outlet in the town of Livonia.
New York State Route 256 (West Lake Road) follows the western shore of the lake, and East Lake Road runs along the eastern side. The lake is long from north to south, with an east-west width of about , while the CDP measures slightly over from north to south and about from east to west.
Geneseo, the Livingston county seat, is west of the center of the CDP.