Boone County, Kentucky

Boone County
County
The old Boone County courthouse in Burlington
Flag Seal Logo
Location within the U.S. state of Kentucky
Kentucky's location within the U.S.
Coordinates: 38°58′N 84°44′W / 38.97°N 84.73°W / 38.97; -84.73
Country	United States
State	Kentucky
Founded	1798
Named for	Daniel Boone
Seat	Burlington
Largest city	Florence
Area
• Total	256 sq mi (660 km2)
• Land	246 sq mi (640 km2)
• Water	10 sq mi (30 km2)  3.9%
Population  (2020)
• Total	135,968
• Estimate  (2023)	140,496
• Density	530/sq mi (210/km2)
Time zone	UTC−5 (Eastern)
• Summer (DST)	UTC−4 (EDT)
Congressional district	4th
Website	www.boonecountyky.org

Boone County is a county located on the Ohio River in the northernmost part of the Commonwealth of Kentucky. As of the 2020 census, the population was 135,968,^[1] making it the fourth-most populous county in Kentucky. Its county seat is Burlington.^[2] The county was formed in 1798 from a portion of Campbell County.^[3] and was named for frontiersman Daniel Boone.^[4] Boone County, with Kenton and Campbell Counties, is of the Northern Kentucky metro area, and the Cincinnati-Middletown, OH-KY-IN Metropolitan Statistical Area. It is the location of the Cincinnati/Northern Kentucky International Airport, which serves Cincinnati and the tri-state area.