Boone County is a county located in the U.S. state of Kentucky. It was formed in 1798. The population was 118,811 in the 2010 Census. Its county seat is Burlington. The county is named for frontiersman Daniel Boone. It is the location of the headquarters of Comair and the Cincinnati/Northern Kentucky International Airport, which serves Cincinnati and the tri-state area.
According to the 2000 census, the county has a total area of 256.96 square miles (665.5 km2), of which 246.26 square miles (637.8 km2) (or 95.84%) is land and 10.70 square miles (27.7 km2) (or 4.16%) is water. Its location along the Ohio River was key to its early development, as the river was the major transportation route.
As of the census of 2000, there were 85,991 people, 31,258 households, and 23,443 families residing in the county. The population density was 349 per square mile (135 /km2). There were 33,351 housing units at an average density of 135 per square mile (52 /km2). The racial makeup of the county was 95.15% White, 1.52% Black or African American, 0.23% Native American, 1.29% Asian, 0.03% Pacific Islander, 0.75% from other races, and 1.03% from two or more races. 1.98% of the population were Hispanics or Latinos of any race.