The Semaphore South Post Office opened on 3 November 1947 and closed in 1978.

[5] Semaphore South is located in the state electoral district of Lee and the federal division of Hindmarsh.

[4][3] Le Fevre High School, originally spelt LeFevre, is located in the suburb, and is the oldest secondary school in the area.

Although the site has earlier origins as a school, it was officially gazetted in 1910.

This article about a place in Adelaide is a stub.