Knox County Flag

Knox County

State:
Ohio
County Seat:
Mount Vernon

Knox County's estimated 2026 population is 64,440 with a growth rate of 0.68% in the past year according to the most recent United States census data. Knox County is the 38th largest county in Ohio. The 2010 population was 61,087 and has seen a growth of 5.49% since that time.

64,440
Total Population
123
Population Density (mi²)
38
Population Rank (State)
438 0.68%
Annual Population Growth

Knox County Population

Demographics

Economics and Income Statistics