South Portsmouth is an unincorporated community in Greenup County, Kentucky, United States.

[3] South Portsmouth was originally called Springville due to the numerous springs in the area.

The Chesapeake and Ohio Railway built a track through the community in the early 1900s.

South Portsmouth is the site of an 18th-century Shawnee Indian village called Lower Shawneetown.

This Greenup County, Kentucky state location article is a stub.