Boone County, Indiana

Boone County, Indiana
Location within the U.S. state of Indiana
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 (0.88 km2)  0.08%
Population
 (2020)
 • Total
70,812
 • Estimate 
(2024)
78,773
 • Density167.44/sq mi (64.649/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.