Marine Corps Recruit Depot Parris Island is an 8,095-acre (32.76 km2) military installation located within Port Royal, South Carolina, approximately 5 miles (8.0 km) south of Beaufort, the community that is typically associated with the installation. MCRD Parris Island is used for United States Marine Corps Recruit Training of enlisted United States Marines. Recruits living east of the Mississippi River report there to receive initial training. Recruits living west of the Mississippi River receive training at Marine Corps Recruit Depot San Diego, California, but may train at MCRD Parris Island by special request.

Port Royal is a town on Port Royal Island in Beaufort County, South Carolina, United States. The population was 14,220 at the 2020 census. It is part of the Hilton Head Island–Bluffton metropolitan area. Port Royal is home to Marine Corps Recruit Depot Parris Island and United States Naval Hospital Beaufort.