'Niagara County' definitions:
Niagara -- U.S. County in New York
From: Gazetteer 2000
Name :
Niagara -- U.S. County in New York
Population (2000) :
219846
Housing Units (2000) :
95715
Land area (2000) :
522.947653 sq. miles (1354.428146 sq. km)
Water area (2000) :
616.885584 sq. miles (1597.726259 sq. km)
Total area (2000) :
1139.833237 sq. miles (2952.154405 sq. km)
Located within :
New York (NY), FIPS 36
Location :
43.146089 N, 78.848097 W