Fort Campbell is a large post of the United States Army located approximately ten miles northwest of downtown Clarksville, Tennessee. It is the home of several units of the Army but most notably the 101st Airborne Division. It is officially styled as "Fort Campbell, Kentucky", because the post headquarters, the vast majority of the base housing, and its main post office are in Kentucky; however, the majority of the reservation is actually in Tennessee. Fort Campbell is the single largest factor in the Clarksville area's economy.
Changes to the 101st Airborne are intended to make the Army more capable to deal with today's threats. The post is expecting another 2,000 troops, with the addition of another brigade, bringing the total active-duty population of Fort Campbell to around 28,000.
FortCampbell supports the 3rd largest military population in the Army and the 7th largest in the Department of Defense.
FortCampbell's primary mission is to advance the combat readiness of the 101st Airborne Division (Air Assault) and the non-divisional units posted at the installation through training, mobilization, and deployment.
FortCampbell's 105,068-acre installation is located in southwestern Kentucky and north central Tennessee in portions of four counties and two states.