Niagara County is a county located in the U.S. state of New York. As of the most recent data available, the county has a population of approximately 219,846 people, with a population density of about 420.36 persons per square mile.
The county spans a total land area of 523.00 square miles (1,355.00 square kilometers). The administrative center and county seat is Lockport, which often serves as a hub for local governance and services. The largest city within the county by population is Niagara Falls.
Geographically, Niagara County experiences varied elevations, with its highest point at Niagara Falls 618 ft and its lowest point at Lewiston 0 ft. The region operates in the UTC-5.