Allegany County, New York

Allegany County
County
Old Allegany County Courthouse
Flag Seal
Location within the U.S. state of New York
New York's location within the U.S.
Coordinates: 42°13′59″N 78°01′34″W / 42.232937°N 78.026093°W / 42.232937; -78.026093
Country	United States
State	New York
Founded	1806
Named for	Lenape name for the Allegheny River
Seat	Belmont
Largest town	Wellsville
Government
• County Chairman	Philip Stockin
Area
• Total	1,034 sq mi (2,680 km2)
• Land	1,029 sq mi (2,670 km2)
• Water	5.1 sq mi (13 km2)  0.5%
Population  (2020)
• Total	46,456
• Density	45.1/sq mi (17.4/km2)
Time zone	UTC−5 (Eastern)
• Summer (DST)	UTC−4 (EDT)
Congressional district	23rd
Website	www.alleganyco.gov

Allegany County is a county in the U.S. state of New York. As of the 2020 census, the population was 46,456.^[1][2] Its county seat is Belmont.^[3] Its name derives from a Lenape word, applied by European-American settlers of Western New York State to a trail that followed the Allegheny River; they also named the county after this. The county is part of the Western New York region of the state.

The county is bisected by the Genesee River, flowing north to its mouth on Lake Ontario. During the mid-nineteenth century, the Genesee Valley Canal was built to link southern markets to the Great Lakes and Mohawk River. The county was also served by railroads, which soon superseded the canals in their capacity for carrying freight. Part of the Oil Springs Reservation, controlled by the Seneca Nation, is located in the county.