'Allegany County, NY' definitions:

Allegany -- U.S. County in New York

From: Gazetteer 2000
Name :
Allegany -- U.S. County in New York
Population (2000) :
49927
Housing Units (2000) :
24505
Land area (2000) :
1030.219638 sq. miles (2668.256500 sq. km)
Water area (2000) :
4.200724 sq. miles (10.879826 sq. km)
Total area (2000) :
1034.420362 sq. miles (2679.136326 sq. km)
Located within :
New York (NY), FIPS 36
Location :
42.232936 N, 78.026092 W