Where is the Marine Corps headquartered?

The Marine Corps is headquartered in Washington, D.C., specifically at the Pentagon. This location serves as the central hub for leadership and administrative functions of the Marine Corps, as well as other branches of the U.S. military. The decision to establish the headquarters in the nation’s capital emphasizes the Marines' integral role in national defense and military strategy, providing easy access to key government officials and other military branches. This pivotal positioning aids in coordinating with other U.S. armed forces and governmental entities on strategic policy and logistical matters.

While locations such as Quantico, Virginia, and Camp Lejeune, North Carolina, are significant for training and operational purposes, they do not serve as the primary headquarters for the Marine Corps itself. Similarly, San Diego, California, is notable for its recruitment and training activities but is not the central location of command and control for the entire Marine Corps organization.