Ontario County Flag

Ontario County

State:
New York
County Seat:

Ontario County's estimated 2026 population is 113,826 with a growth rate of 0.36% in the past year according to the most recent United States census data. Ontario County is the 25th largest county in New York. The 2010 population was 108,183 and has seen a growth of 5.22% since that time.

113,826
Total Population
177
Population Density (mi²)
25
Population Rank (State)
407 0.36%
Annual Population Growth

Ontario County Population

Demographics

Economics and Income Statistics