Marine Corps Recruit Depot Parris Island (often abbreviated as MCRD PI) is an 8,095 acres military installation located within Port Royal, South Carolina, approximately 5 miles south of Beaufort, the community that is typically associated with the installation. MCRD Parris Island is used for the training of enlisted Marines. Male recruits living east of the Mississippi River and female recruits from all over the United States report here to receive their initial training.