Joint Base Lewis-McChord is the largest military base by size, covering 414,000 acres in Puget Sound, Washington. The second-largest military base by size is Fort Hood, located in Bell and Coryell Counties in Texas and seated on 214,968 acres; it is the only base in the country that supports two full armored divisions. By population, Fort Bragg, located in North Carolina, is the largest with 238,646 people living on the base as of 2013.
Another big military base is Fort Campbell, which is located on the Kentucky and Tennessee state line and sits on 105,000 acres with a population of 234,914 people. Fort Campbell is home to the Army's only Air Assault Division, the Screaming Eagles of the 101st Airborne Division Air Assault.
Fort Benning is also substantially sized. Located in Columbus and Fort Benning, Georgia, and Phenix City, Alabama, the base rests on 182,000 acres and is home to 107,627 active duty members, reserve components, retired personnel, off-post retirees and dependents. It is home to the military's infantry and armor divisions.
The largest military base, Joint Base Lewis-McChord, houses 27,000 military personnel, 52,486 military family members, 10,000 civilians and 120,000 retirees, as of 2013. It is a training and mobilization center for all branches of the military.