Knox County Flag

Knox County

State:
Indiana
County Seat:
Vincennes

Knox County's estimated 2025 population is 35,717 with a growth rate of -0.43% in the past year according to the most recent United States census data. Knox County is the 45th largest county in Indiana. The 2010 population was 38,394 and has seen a growth of -6.97% since that time.

35,717
Total Population
69
Population Density (mi²)
45
Population Rank (State)
-155 -0.43%
Annual Population Growth

Knox County Population

Demographics

Economics and Income Statistics

Sources

  1. City and Town Population Totals: 2020-2024
  2. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  3. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  4. American Community Survey (2009 - 2013)
  5. Census QuickFacts
  6. Historical Populations of States and Counties (1790 - 1990)