Niagara County Flag

Niagara County

State:
New York
County Seat:

Niagara County's estimated 2026 population is 209,342 with a growth rate of -0.05% in the past year according to the most recent United States census data. Niagara County is the 18th largest county in New York. The 2010 population was 216,474 and has seen a growth of -3.29% since that time.

209,342
Total Population
401
Population Density (mi²)
18
Population Rank (State)
-114 -0.05%
Annual Population Growth

Niagara County Population

Demographics

Economics and Income Statistics