Boone County, Indiana

Boone County
Location within the U.S. state of Indiana
Indiana's location within the U.S.
Coordinates: 40°03′N 86°28′W / 40.05°N 86.47°W / 40.05; -86.47
Country United States
State Indiana
FoundedApril 1, 1830 (created)
1831 (organized)
Named afterDaniel Boone
SeatLebanon
Largest cityZionsville
Area
  Total
423.25 sq mi (1,096.2 km2)
  Land422.91 sq mi (1,095.3 km2)
  Water0.34 sq mi (0.9 km2)  0.08%
Population
 (2020)
  Total
70,812
  Estimate 
(2024)
78,773
  Density170/sq mi (65/km2)
Congressional districts4th, 5th
Websiteboonecounty.in.gov
Indiana county number 6

Boone County is a county in the U.S. state of Indiana. As of 2020, the population was 70,812. The county seat is Lebanon.