Ontario County Flag

Ontario County

State:
New York
County Seat:
Canandaigua

Ontario County's estimated 2026 population is 113,527 with a growth rate of 0.35% 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 4.94% since that time.

113,527
Total Population
176
Population Density (mi²)
25
Population Rank (State)
397 0.35%
Annual Population Growth

Ontario County Population

Demographics

Economics and Income Statistics