United States Army Garrison Fort Buchanan consists of 746.16 acres between the municipalities of Bayamón and Guaynabo, Puerto Rico with a real estate value estimated at $560 million.
Fort Buchanan is host to a number of tenant activities, most of them branches of the United States Armed Forces Reserve Component such as the U.S. Army Reserve 1st Mission Support Command, the U.S. Navy Reserve and the U.S. Marine Corps Reserve.