Green Sea is an unincorporated community and census-designated place (CDP) in Horry County, South Carolina, United States, near the city of Loris.

[3] The Green Sea post office was established 15 Feb 1870, and after a decade of being discontinued and reestablished multiple times, Richard C. Powell was appointed postmaster 8 Nov 1880, and changed the name to Powellville.

[4] John P. Derham House, listed on the National Register of Historic Places in 2005, is located in Green Sea.

Green Sea owns an airport whose FAA LID is S79.

This South Carolina state location article is a stub.