Onondaga County Flag

Onondaga County

State:
New York
County Seat:

Onondaga County's estimated 2026 population is 470,984 with a growth rate of 0.12% in the past year according to the most recent United States census data. Onondaga County is the 11th largest county in New York. The 2010 population was 467,549 and has seen a growth of 0.73% since that time.

470,984
Total Population
605
Population Density (mi²)
11
Population Rank (State)
586 0.12%
Annual Population Growth

Onondaga County Population

Demographics

Economics and Income Statistics