Letchworth State Park is a 14,427-acre (5,838 ha) New York State Park located in Livingston County and Wyoming County in the western part of the State of New York. The park is roughly 17 miles (27 km) long, following the course of the Genesee River as it flows north through a deep gorge and over several large waterfalls. It is located 35 miles (56 km) southwest of Rochester and 60 miles (97 km) southeast of Buffalo, and spans portions of the Livingston County towns of Leicester, Mount Morris and Portage, as well as the Wyoming County towns of Castile and Genesee Falls.

Livingston County is a county in the U.S. state of New York. As of the 2020 census, the population was 61,834. Its county seat is Geneseo. The county is named after Robert R. Livingston, who helped draft the Declaration of Independence and negotiated the Louisiana Purchase. The county is part of the Finger Lakes region of the state.