Knox County Flag

Knox County

State:
Indiana
County Seat:
Vincennes

Knox County's estimated 2026 population is 35,547 with a growth rate of -0.29% in the past year according to the most recent United States census data. Knox County is the 44th largest county in Indiana. The 2010 population was 38,394 and has seen a growth of -7.42% since that time.

35,547
Total Population
69
Population Density (mi²)
44
Population Rank (State)
-105 -0.29%
Annual Population Growth

Knox County Population

Demographics

Economics and Income Statistics