The post is the home for the 1st Cavalry Division, 4th Infantry Division, and the Headquarters Command III Corps, 3d Personnel Group, 3d Signal Brigade, 13th Corps Support Command (COSCOM), 13th Finance Group, 89th Military Police Brigade, 504th Military Intelligence Brigade, the 21st Cavalry Brigade (Air Combat), the Dental Activity (DENTAC), the Medical Support Activity (MEDDAC), Army Operational Test Command (AOTC) formerly TEXCOM, and various other units and tenant organizations.
A 340-square mile installation, the post is adjacent to the city of Killeen, TX, approximately 60 miles north of Austin and 50 miles south of Waco. More than 5,000 sets of quarters for enlisted soldiers and their families, plus an additional 634 quarters are set aside for officers and their families on the grounds.
The post also has nearly 100 barracks for enlisted soldiers, 75 guest quarters and more than 340 transient quarters.
There are more than 500 tanks, almost 500 Bradley fighting vehicles, about 1,600 other tracked vehicles, almost 10,000 wheeled vehicles and close to 200 fixed and rotary-winged aircraft.
The overall post population is estimated at about 71,000, of which are almost 42,000 soldiers.